HELLO! My S2 Wifi can't be turn on. It keep showing "wifi is turning on". I have tried to change kernel and roms but problem still persist. I wonder what is causing this problem. I hope it is not a hardware issue.
Currently I am using : Resurrection Remix v3.0.9
4.1.1
19100XXLPW
Siyah v4.1.5
Any Solution? PLS HELP! THANKS! :laugh:
slemonf said:
HELLO! My S2 Wifi can't be turn on. It keep showing "wifi is turning on". I have tried to change kernel and roms but problem still persist. I wonder what is causing this problem. I hope it is not a hardware issue.
Currently I am using : Resurrection Remix v3.0.9
4.1.1
19100XXLPW
Siyah v4.1.5
Any Solution? PLS HELP! THANKS! :laugh:
Click to expand...
Click to collapse
i am also using the same RRv3.0.9 ma8 and havent seen that issue for now, try restarting ur Rooter and see
Sun90 said:
i am also using the same RRv3.0.9 ma8 and havent seen that issue for now, try restarting ur Rooter and see
Click to expand...
Click to collapse
hmm i don't think is my router problem as my other devices can connect to wifi. It is not a connection issue.The problem is that i cannot even turn on the wifi on my S2. it keep saying "Turning Wi-Fi on"
Wi-fi KO
Hi, im experiencing exactly the same issue. I was using RR for some time. Version 3.0.9 for the last couple of weeks and had no problem. Yesterday picked up the phone and tried to turn on wifi and the slider was kinda greyed out. Since then tried everything. Flash different kernels, whole ROMs, old, new, no difference. Whipes, restarts, leave the battery out for some time. Nothing. Tried to find answer, but also no luck. I am worried, that it is hardware. Can anyone bring some light to this issue? Thanks.
Edit: Problem found. Took the phone apart and to my surprise - the small button battery leaked and the acid f..up one resistor and its surundigs, that is responsible for wifi. So now i will try to repair it. Have resistors, but dont have enough patience..... I will share results as soon as i have them.
bamboochaxxx said:
Hi, im experiencing exactly the same issue. I was using RR for some time. Version 3.0.9 for the last couple of weeks and had no problem. Yesterday picked up the phone and tried to turn on wifi and the slider was kinda greyed out. Since then tried everything. Flash different kernels, whole ROMs, old, new, no difference. Whipes, restarts, leave the battery out for some time. Nothing. Tried to find answer, but also no luck. I am worried, that it is hardware. Can anyone bring some light to this issue? Thanks.
Edit: Problem found. Took the phone apart and to my surprise - the small button battery leaked and the acid f..up one resistor and its surundigs, that is responsible for wifi. So now i will try to repair it. Have resistors, but dont have enough patience..... I will share results as soon as i have them.
Click to expand...
Click to collapse
Wow. so it a hardware problem? Hmmm hope to hear from you soon!
So finally problem fixed. Solder-out the BAT500 which was ruined anyway a took with it the resistors. Change resistor R205 and replaced it with another one from a old PC motherboard. Couldnt find one exactly the same size, but found two aproximatelly twice the size with the right specs. The soldering was the tricky part. Fist tried it just with magnifying glass, but that was not enough. So I ask a friend for help and got a microscope. Since then the job was much easier. But still took a lot of patience. Taking the parts out was pretty easy. After that I cleaned the rest of the acid and saw the real damage done by it. Battery BAT500 leaked out pretty bad and took with resistor R205, which was completely dissolved. One connecting pin was quite OK, but the other ano was gone as well. So I cleaned out everything. Took the new resistor and tried to solder it in place. In the process I screwed-up and burnd it. Good thing I had 2 The other one was little bigger and wouldnt fit in the original place. So I solder one end to the existing connection point and the other side directly to pin on the wifi chip with the use of a very thin wire from headphone cable. Not the cleanest job ive ever done, but its working. Checked for shorts, measured the impendaces and tried it.
Im very pleased, that its working. Sofar I couldnt find replacement for BAT500, so just left it without it. Not a biggie.
It took me about 2 hours of work (with many mistakes and resistors jumping all around the table ) But finally done. Hope it stays that way for a long time.
Wifi is working like a charm and to my supprise, I think that the phone is not heating up as much as before. But if Samsung would have put better quality battery inside, this would never happend. But I guess thats on purpose, because than nobody would have to buy a new things Right? Every piece of technology nowdays have some king of component that have only one purpose - to ..... things up !!!
slemonf said:
HELLO! My S2 Wifi can't be turn on. It keep showing "wifi is turning on". I have tried to change kernel and roms but problem still persist. I wonder what is causing this problem. I hope it is not a hardware issue.
Currently I am using : Resurrection Remix v3.0.9
4.1.1
19100XXLPW
Siyah v4.1.5
Any Solution? PLS HELP! THANKS! :laugh:
Click to expand...
Click to collapse
sorry wrong post..
slemonf said:
HELLO! My S2 Wifi can't be turn on. It keep showing "wifi is turning on". I have tried to change kernel and roms but problem still persist. I wonder what is causing this problem. I hope it is not a hardware issue.
Currently I am using : Resurrection Remix v3.0.9
4.1.1
19100XXLPW
Siyah v4.1.5
Any Solution? PLS HELP! THANKS! :laugh:
Click to expand...
Click to collapse
Just adding my voice to this mine died after last OTA update... Have done factory reset - no change. Just going to re-install stock xwlpt..
to see if that works :crying:
bamboochaxxx said:
So finally problem fixed. Solder-out the BAT500 which was ruined anyway a took with it the resistors. Change resistor R205 and replaced it with another one from a old PC motherboard. Couldnt find one exactly the same size, but found two aproximatelly twice the size with the right specs. The soldering was the tricky part. Fist tried it just with magnifying glass, but that was not enough. So I ask a friend for help and got a microscope. Since then the job was much easier. But still took a lot of patience. Taking the parts out was pretty easy. After that I cleaned the rest of the acid and saw the real damage done by it. Battery BAT500 leaked out pretty bad and took with resistor R205, which was completely dissolved. One connecting pin was quite OK, but the other ano was gone as well. So I cleaned out everything. Took the new resistor and tried to solder it in place. In the process I screwed-up and burnd it. Good thing I had 2 The other one was little bigger and wouldnt fit in the original place. So I solder one end to the existing connection point and the other side directly to pin on the wifi chip with the use of a very thin wire from headphone cable. Not the cleanest job ive ever done, but its working. Checked for shorts, measured the impendaces and tried it.
Im very pleased, that its working. Sofar I couldnt find replacement for BAT500, so just left it without it. Not a biggie.
It took me about 2 hours of work (with many mistakes and resistors jumping all around the table ) But finally done. Hope it stays that way for a long time.
Wifi is working like a charm and to my supprise, I think that the phone is not heating up as much as before. But if Samsung would have put better quality battery inside, this would never happend. But I guess thats on purpose, because than nobody would have to buy a new things Right? Every piece of technology nowdays have some king of component that have only one purpose - to ..... things up !!!
Click to expand...
Click to collapse
I have the same problem. Sometimes work, but don't fine. Do you have some pictures about this procedure? :good:
Thank you so much!
bamboochaxxx said:
So finally problem fixed. Solder-out the BAT500 which was ruined anyway a took with it the resistors. Change resistor R205 and replaced it with another one from a old PC motherboard. Couldnt find one exactly the same size, but found two aproximatelly twice the size with the right specs. The soldering was the tricky part. Fist tried it just with magnifying glass, but that was not enough. So I ask a friend for help and got a microscope. Since then the job was much easier. But still took a lot of patience. Taking the parts out was pretty easy. After that I cleaned the rest of the acid and saw the real damage done by it. Battery BAT500 leaked out pretty bad and took with resistor R205, which was completely dissolved. One connecting pin was quite OK, but the other ano was gone as well. So I cleaned out everything. Took the new resistor and tried to solder it in place. In the process I screwed-up and burnd it. Good thing I had 2 The other one was little bigger and wouldnt fit in the original place. So I solder one end to the existing connection point and the other side directly to pin on the wifi chip with the use of a very thin wire from headphone cable. Not the cleanest job ive ever done, but its working. Checked for shorts, measured the impendaces and tried it.
Im very pleased, that its working. Sofar I couldnt find replacement for BAT500, so just left it without it. Not a biggie.
It took me about 2 hours of work (with many mistakes and resistors jumping all around the table ) But finally done. Hope it stays that way for a long time.
Wifi is working like a charm and to my supprise, I think that the phone is not heating up as much as before. But if Samsung would have put better quality battery inside, this would never happend. But I guess thats on purpose, because than nobody would have to buy a new things Right? Every piece of technology nowdays have some king of component that have only one purpose - to ..... things up !!!
Click to expand...
Click to collapse
Hi,
Can you please help me specs of the resistor, I mean R205 is of how many ohms ?
Thanks
You need the Samsung I9100 service manual, which has been posted here before. It has full parts lists & 'tutorials' of most of the common fixes their techs do. Try a Google or XDA search (You're could wait a long time for a reply from the person whose post you're responding to given they made it 9 months ago).
MistahBungle said:
You need the Samsung I9100 service manual, which has been posted here before. It has full parts lists & 'tutorials' of most of the common fixes their techs do. Try a Google or XDA search (You're could wait a long time for a reply from the person whose post you're responding to given they made it 9 months ago).
Click to expand...
Click to collapse
I have manual but it does not specifies value of the resistor.
Attached is the screenshot of the manual, please let me know if you can make out the value of the resistor
slemonf said:
HELLO! My S2 Wifi can't be turn on. It keep showing "wifi is turning on". I have tried to change kernel and roms but problem still persist. I wonder what is causing this problem. I hope it is not a hardware issue.
Currently I am using : Resurrection Remix v3.0.9
4.1.1
19100XXLPW
Siyah v4.1.5
Any Solution? PLS HELP! THANKS! :laugh:
Click to expand...
Click to collapse
Change your kernel it will help you to connect wifi again :thumbup:
Sent from my GT-I9100 using xda premium
virgo79 said:
I have manual but it does not specifies value of the resistor.
Attached is the screenshot of the manual, please let me know if you can make out the value of the resistor
Click to expand...
Click to collapse
I just fixed today my galaxy S2 I9100. It had the same issue BAT500 leaking acid. (wifi not working)
Since you ask for R205 value. I'm sorry didn’t saw your post earlier. But maybe you can measure it's value from R204, R206, R207 since in your own screenshot it seems they all have the same value.
Some people are using 20kohm smd resistor.
I'm also interested in replacing BAT500. I measured 1.2V in open circuit and 1.0V in closed circuit, with positive towards mainboard.
I will try to find a replacement battery.
smd0806 said:
I just fixed today my galaxy S2 I9100. It had the same issue BAT500 leaking acid. (wifi not working)
Since you ask for R205 value. I'm sorry didn’t saw your post earlier. But maybe you can measure it's value from R204, R206, R207 since in your own screenshot it seems they all have the same value.
Some people are using 20kohm smd resistor.
I'm also interested in replacing BAT500. I measured 1.2V in open circuit and 1.0V in closed circuit, with positive towards mainboard.
I will try to find a replacement battery.
Click to expand...
Click to collapse
I tried with using 47K resistor but it didn't work
---------- Post added at 12:42 AM ---------- Previous post was at 12:37 AM ----------
I tried with AOSP 4.3.1 but still not able to start Wifi
Related
Hi all,
I had to replace the power button flex board of my i9100, but I made a mistake when soldering, and something shorted and a SMD in the board exploded with a *BANG* and went flying like a bright shooting star. Then came the smell of fried electronics, oh boy, that was horrible! Strangely, I couldn't locate which SMD component exploded, the boards looks fine, even if carefully examined with a 10x magnifier.
I thought the board was completely destroyed. But I fixed the power flex cable soldering, assembled the phone, connected it to the USB charger, and guess what?? The recovery menu appeared, some message appeared and quickly disappeared, and the phone booted normally! Everythting worked: network, wifi, bluetooth, camera, etc. However, the power button didn't work anymore, even now it's properly soldered.
I removed the battery to turn off the phone, but now it doesn't turn on with the button. If I plug it to USB, now it shows the charging battery screen, animated and all, but I can't turn on the phone anymore!
So I ask: does anyone know which SMD components take part in turning the phone on by pressing the power button? I can't find this info in the service manual, but I'm sure it's just a matter of replacing a burnt SMD resistor, capacitor or inductor, since the phone works, I saw it working!
So, does anyone have any info for me, or at least a detailed diagram of the circuitry, so I can find my way into that?
Thank you all in advance!!!
Eduardo
Marcovecchio said:
Hi all,
I had to replace the power button flex board of my i9100, but I made a mistake when soldering, and something shorted and a SMD in the board exploded with a *BANG* and went flying like a bright shooting star. Then came the smell of fried electronics, oh boy, that was horrible! Strangely, I couldn't locate which SMD component exploded, the boards looks fine, even if carefully examined with a 10x magnifier.
I thought the board was completely destroyed. But I fixed the power flex cable soldering, assembled the phone, connected it to the USB charger, and guess what?? The recovery menu appeared, some message appeared and quickly disappeared, and the phone booted normally! Everythting worked: network, wifi, bluetooth, camera, etc. However, the power button didn't work anymore, even now it's properly soldered.
I removed the battery to turn off the phone, but now it doesn't turn on with the button. If I plug it to USB, now it shows the charging battery screen, animated and all, but I can't turn on the phone anymore!
So I ask: does anyone know which SMD components take part in turning the phone on by pressing the power button? I can't find this info in the service manual, but I'm sure it's just a matter of replacing a burnt SMD resistor, capacitor or inductor, since the phone works, I saw it working!
So, does anyone have any info for me, or at least a detailed diagram of the circuitry, so I can find my way into that?
Thank you all in advance!!!
Eduardo
Click to expand...
Click to collapse
Hola Eduardo,
you probably used a too high temperature in the soldering iron.
Google for "56542824-Samsung-GT-i9100-service-manual.pdf" and you will find a good service manual that will guide you on a series of problem.
I doubt that there's a procedure for your specific problem, but you may be able to know what SMD you have to replace.
I wish you luck, and next time make sure that the temperature is low (and eventually use a solder paste!)
robdpi said:
Hola Eduardo,
you probably used a too high temperature in the soldering iron.
Google for "56542824-Samsung-GT-i9100-service-manual.pdf" and you will find a good service manual that will guide you on a series of problem.
I doubt that there's a procedure for your specific problem, but you may be able to know what SMD you have to replace.
I wish you luck, and next time make sure that the temperature is low (and eventually use a solder paste!)
Click to expand...
Click to collapse
Thanks for your reply, robdpi!
The soldering iron temperature was ok, I used a 12W Weller micro soldering iron, temperature was not more than 550F / 300C, and I never leave the iron on the work for more than 3 continuous seconds. The problem was a short between two of the 3 pins in the connector. I noticed it only after the accident occurred, testing with my multimeter.
About the service manual, this is the one I have, and the testing procedures (voltages, frequencies) are all OK when plugged to the USB, but they all fail when I try to turn it on with the power button. And you're right, there's no procedure in the manual regarding this specific problem.
Anyway, I will keep trying, thanks again,
Eduardo
Well, after almost an year, I fixed the phone! I'll write about the solution here, to serve as a reference to anyone who needs help.
I managed to find the electrical schematics of the whole phone. With the information given in it, I noticed the connection between the positive battery pin and the flex power button connector was interrupted. Probably the short circuit I did overheated and blew some thin trace on the PCB and it kind of exploded. So I soldered a thin wire between the battery connector and the power button to replace the lost connection, and the phone is now working again! If anyone needs the schematics, just PM me and I will send it over.
But now, I'm back to another issue the phone already had, even before I did the short circuit: the screen shows horizontal lines, blurring the image. It started after I replaced a cracked screen. Does anyone have any idea if it's software or hardware related? May it be a driver issue? I'm from Brazil, and the screen came from Korea (bought at eBay). Should a korean screen work in my phone? Is it possible to confirm or not if it's hardware or software related?
Any help will be great, thanks in advance!
Eduardo
Post a screen.
Sent from the little guy
gastonw said:
Post a screen.
Sent from the little guy
Click to expand...
Click to collapse
I attached 8 pictures showing how the thing looks like. Please note the banding can't be seen on black background, and it's only horizontal. I used red arrows to show the banding. Vertical and curve artifacts are distortions caused by the camera.
If you pay attention to the file names (which have the time each picture was taken) it's possible to see how the thing gets worse with time. In the last pictures, screen goes completely unreadable, it degrades to an almost uniform bluish white.
I already tried flashing a custom kernel as suggested on another thread, but it didn't help. Already tried stock 4.0.4, that didn't work also.
Thanks a lot for any help.
Eduardo
Marcovecchio said:
I attached 8 pictures showing how the thing looks like. Please note the banding can't be seen on black background, and it's only horizontal. I used red arrows to show the banding. Vertical and curve artifacts are distortions caused by the camera.
If you pay attention to the file names (which have the time each picture was taken) it's possible to see how the thing gets worse with time. In the last pictures, screen goes completely unreadable, it degrades to an almost uniform bluish white.
I already tried flashing a custom kernel as suggested on another thread, but it didn't help. Already tried stock 4.0.4, that didn't work also.
Thanks a lot for any help.
Eduardo
Click to expand...
Click to collapse
i have the same isue with my phone and i have another motherboard , but it didn't work....
ps: my screen is a genuine one
kozimcfly said:
i have the same isue with my phone and i have another motherboard , but it didn't work....
ps: my screen is a genuine one
Click to expand...
Click to collapse
You mean you tried the screen on two motherboards, and it shows the same problem on both? Could you please tell the country of origin of your motherboards and screen? I suspect it may be a hardware incompatibility issue.
In other words: motherboards sold in country X may not "talk" correctly to screens from country Y. My i9100 is from Brazil, but the screen came from a Korean seller at eBay.
By the way, does anyone know if the official firmwares come with low level hardware drivers? Is it possible to "transplant" the video driver from an asian firmware, to a south america firmware, for example?
I know about android phones which changed the wi-fi chip during their life cicle and this transplant used to be made, and worked. I would like to try the same for video.
Thanks!
Eduardo
Marcovecchio said:
You mean you tried the screen on two motherboards, and it shows the same problem on both? Could you please tell the country of origin of your motherboards and screen? I suspect it may be a hardware incompatibility issue.
In other words: motherboards sold in country X may not "talk" correctly to screens from country Y. My i9100 is from Brazil, but the screen came from a Korean seller at eBay.
By the way, does anyone know if the official firmwares come with low level hardware drivers? Is it possible to "transplant" the video driver from an asian firmware, to a south america firmware, for example?
I know about android phones which changed the wi-fi chip during their life cicle and this transplant used to be made, and worked. I would like to try the same for video.
Thanks!
Eduardo
Click to expand...
Click to collapse
both of them from belgium
This is either a screen problem or a battery problem.
What happens when you swap batteries?
Sent from the little guy
gastonw said:
This is either a screen problem or a battery problem.
What happens when you swap batteries?
Sent from the little guy
Click to expand...
Click to collapse
I have only one battery, so can't swap to test. But could you explain how could the battery cause this problem?
I just measured the battery voltage with a digital multimeter, and it's 4.15 V, fully charged. This is almost a half volt above the 3.7 V it should be. Do you think this may be the cause for all the problem?
Many tthanks!
Yeah, screen might not getting enough juice.
Sent from the little guy
gastonw said:
Yeah, screen might not getting enough juice.
Click to expand...
Click to collapse
I did another test: measured the battery voltage with the phone turned on, to check the voltage drop caused by phone load, but it seemed normal. With phone on, battery measured 3.8V approximately, which is a little less than the 4.15V I got without load. The battery indicator shows 75% battery charge. It looks like the battery is behaving well under load.
Anyway, I will try another battery as soon as I can.
Thanks again,
Eduardo
Well, I did test with another battery and the problem persists. Should I give up and consider it's really a screen hardware problem?
Thanks,
Eduardo
My guess was on the battery, I guess I'll take the screen problem then.
You should have it checked it out with a tech guy.
Sent from the little guy
Well, I think I went as far as I could. I replaced all 20 tiny SMD components from the display flex PCB with the ones from the old display, which cracked.
But it didn't work, the problem remains. Now I think the problem lies in the AMOLED screen itself, or perhaps in the main phone board. Who knows if the main board is sending dirty electrical signals to the display?
Anyway, I think I will just sell the phone the way it is, I can't afford spending even more money on this phone.
Thanks for the help, gastonw!
You got it Eduardo.
Sent from the little guy
Hi,
I just thought this fix might be useful for people who have a Galaxy S2 that won't turn on at all - eg not even to download mode or charging mode... I applied the fix to a phone today and it went from brick, to booting up!
I stumbled onto a thread on gsmhosting, which points out a really common problem caused by water damage - a specific shorted out capacitor on the motherboard. As it turns out, this capacitor is only used for USB on the go - for USB tethering, mice and such - removing it doesn't affect any other function on the phone. So you can actually remove this capacitor, and the phone will boot up as normal.
Here's the GSM thread:
http://forum.gsmhosting.com/vbb/f258/samsung-galaxy-s2-i9100-short-circuit-solution-1537757/
According to that thread can remove either the capacitor or the tiny IC next to it for the fix... they're on the edge of the motherboard and isolated at the end, so they're actually pretty easy to get to.
For my fix, I didn't have a soldering iron handy, so I just took the plunge and used a tiny screwdriver to carefully pop off the capacitor - I tried to pop it gently away from the IC, to minimize the damage. It popped off perfectly, and after replacing the battery, voila, the phone booted!!
*One weird note about my experience, that I didn't see anyone else report - after the phone booted, the touchscreen wasn't recognized. I thought maybe I'd dislodged one of the cables, but un/reattaching them all didn't seem to help. I then attached the phone to the PC, and used Kies to flash the latest firmware. After I flashed and rebooted, the touchscreen worked fine.
Hope this helps someone! It was such an awesome feeling seeing a dead phone come back to life
Awesome find mate.
Sent from my GT-P6200 using xda app-developers app
It worked for me without a glitch.
I was worried after rebooting cause I had problems with a puzzling "USB memory", but it turned out the MicroSD was not correctly inserted.
Thanks for explaining what the capacitor is for, I was not eagr to remove something that could possibly have a valuable purpose
You think this could be done with the t989 i was running pacman in kitkat i opened netfloix and blam the phone turned off and wont show anymore soigns of life i have found everything in the internet but nothing works
Many thanks
Many many thanks to OP and the original video uploader melanrz1
You saved my 3-year-old I9100! Wish it can last for another 3, all the best!
Is there a way to do this with the t989? Pm me and let me know. Trying to get my old s2 yo work. Thanks
what happen if i just take it off? no replace
Have u found a fix yet?
chacua358 said:
You think this could be done with the t989 i was running pacman in kitkat i opened netfloix and blam the phone turned off and wont show anymore soigns of life i have found everything in the internet but nothing works
Click to expand...
Click to collapse
Have u found a fix yet for the s2 t989
fadinggaming02 said:
Have u found a fix yet for the s2 t989
Click to expand...
Click to collapse
nahh i never found a fix i just ended up giving the phone to my niece who uses it as a play phone
I've read a few posts here with similar problems but the solutions (if any) haven't worked for me.
My wifi started to switch off intermittently. The "switch" icon in Settings would move across to the "ON" position but would then move right back to "OFF". Then after several hours the wifi would magically work again. Now it has stopped working altogether. I tried going back to GB including wiping data and cache then went forward to JB 4.1.2. No luck. I even tried GS2ROMNuke in between and Siyah kernel. I'm now back where it all started with WanamLite Clean & Fast & Pure Stock Themed 4.1.2
I opened the phone and checked for internal battery leakage but there was only a tiny amount and that was still on the battery itself, none on the circuit board.
At this stage I have just about given up. Has anyone managed to recover from this situation?
Of course it happened just 3 months out of warranty
K0jak said:
I've read a few posts here with similar problems but the solutions (if any) haven't worked for me.
My wifi started to switch off intermittently. The "switch" icon in Settings would move across to the "ON" position but would then move right back to "OFF". Then after several hours the wifi would magically work again. Now it has stopped working altogether. I tried going back to GB including wiping data and cache then went forward to JB 4.1.2. No luck. I even tried GS2ROMNuke in between and Siyah kernel. I'm now back where it all started with WanamLite Clean & Fast & Pure Stock Themed 4.1.2
I opened the phone and checked for internal battery leakage but there was only a tiny amount and that was still on the battery itself, none on the circuit board.
At this stage I have just about given up. Has anyone managed to recover from this situation?
Of course it happened just 3 months out of warranty
Click to expand...
Click to collapse
Hey bro, sorry to hear about your problem. Have you tried testing the Wi-fi after installing a new ROM without updating or changing the stock kernel?
sandmoose said:
Hey bro, sorry to hear about your problem. Have you tried testing the Wi-fi after installing a new ROM without updating or changing the stock kernel?
Click to expand...
Click to collapse
I think I have... not 100% sure though. Might go back to stock and try again though. Such a PITA... I was going to upgrade to a Note 3 and pass this S2 on to a family member. :crying:
Success!
I'm sorry to resurrect a long dead thread.
I just wanted to let you know I finally fixed my wifi issue. The problem was (as in many cases) the battery near the wifi chip, leaking. Although I had previously opened the phone and cleaned the PCB with isopropyl alcohol, I hadn't noticed that the track between one of the resistors and the wifi chip, had been eroded. I scratched some of the covering off the track and tried to measure continuity to one side of the resistor but got an open circuit. After clumsily soldering a piece of fine wire from the resistor to the scratched piece of track, wifi was restored.
I really can't believe it. I had previously inspected the board close up and thought that no erosion had taken place. But now after taking some time (and some beer) I found the fault.
Some feedback for Samsung... you *****es! How can you fit such a weakness to, what was, your flagship phone? This issue has hit so many users. I have read many many posts here and on other forums complaining about wifi problems with the SGS 2. Unfortunately for me this fault occurred when I was a few weeks out of my 2 year warranty
This was not an easy soldering job. I am fairly good at fine soldering but attaching a wire to a SMD resistor so small was really difficult. It may come off in the future but at least I now what and where the fault is now.
Once again, sorry to resurrect the old thread.
FYI the resistor that was affected was the one that sits by itself at right angles to the other 4. Unfortunately it is nearest the battery.
Hey Guys,
Recently my V30 has had a blinking arrow inside the battery icon. I've searched the internet and can't find any info on it. Can anyone give me some insight? The phone is only a few months old and hasn't been in the water.
Thanks!
Bren Dekura said:
Hey Guys,
Recently my V30 has had a blinking arrow inside the battery icon. I've searched the internet and can't find any info on it. Can anyone give me some insight? The phone is only a few months old and hasn't been in the water.
Thanks!
Click to expand...
Click to collapse
I have the same issue. It's causing a huge battery drain! Were you able to resolve the issue?
Yeah, Turns out it means there's battery drain due to moisture in the charging port. I used isopropyl alcohol to clean the charging port and it eventually went away. You may have some debris in there. Was really difficult to figure out what that arrow meant. Wish there was better documentation.
Bren Dekura said:
Yeah, Turns out it means there's battery drain due to moisture in the charging port. I used isopropyl alcohol to clean the charging port and it eventually went away. You may have some debris in there. Was really difficult to figure out what that arrow meant. Wish there was better documentation.
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Are you the same person who suggested this solution on Reddit or you read it on reddit and then tried it?
I think it's because the charger you used is giving too much current to your phone. You can fix this by connecting your phone to something that has low current like laptop or computer usb port and then wait for a while so that your phone can adjust
Ok so idk if I'm the first or probably the last one to encounter this issue but I'll be honest here. My device is LG G8X DUAL SCREEN. In the past week or so, I noticed that my phone randomly stopped charging whilst being plugged in. I thought that it could be some dirt clogged into the post so I cleaned it with a Q tip and some surface cleaner. Didn't seem to work. I let it be and felt it would go away eventually. Or so didn't I felt. I tried resetting the device (factory reset) and that didn't seem to budge the constant blinking of a right arrow inside the battery icon. Around here, I saw someone suggesting IPA and felt I should really give it a try. About 30 minutes before I tried that method and since then there hasn't been the issues so far. I'll keep y'all posted and will ping if issue persits. Hope this helps those in need
RealRareWolf said:
Ok so idk if I'm the first or probably the last one to encounter this issue but I'll be honest here. My device is LG G8X DUAL SCREEN. In the past week or so, I noticed that my phone randomly stopped charging whilst being plugged in. I thought that it could be some dirt clogged into the post so I cleaned it with a Q tip and some surface cleaner. Didn't seem to work. I let it be and felt it would go away eventually. Or so didn't I felt. I tried resetting the device (factory reset) and that didn't seem to budge the constant blinking of a right arrow inside the battery icon. Around here, I saw someone suggesting IPA and felt I should really give it a try. About 30 minutes before I tried that method and since then there hasn't been the issues so far. I'll keep y'all posted and will ping if issue persits. Hope this helps those in need
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Update:
The issue still persists, can't find a way to stop it. Only possible solution is to replace the charging port
RealRareWolf said:
Update:
The issue still persists, can't find a way to stop it. Only possible solution is to replace the charging port
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Yeah I had to get the usb port replaced on my V30 due to this issue. That fixed it.
hmm
I solved my blinking arrow problem, with a new USB C cable, try that aswell.
I have a strange issue related to kenzo(rn3). My battery was swollen. So got rid of it. But when I went to buy a new battery the touch stopped working. So I tried to get it repaired in local shops bcz mi center were charging 4k. But local guys couldn't fix it. The issue was may be of motherboard. After some days I again restarted(with charger only, didn't bought battery) as usual, this time the touch worked with no problem even after restarts. So I bought the battery and was using the phone. But the battery backup was not good bcz of miui 9.5. So I searched for a good sot rom. I downgraded to miui 7.6.3. No imei issue happened but touch again is unresponsive. I tried installing miui 9.5 with no luck. I think the issue is on the software part. I clean flash installed roms every time by miflash. Help anyone. Please.
I think your problem is a unique case, I can't relate. However, I DO get those touchscreen problems. I get that very-very-rarely. A forced restart by holding the power fixes it.
I recently changed to MIUI 9.5.6.0, haven't gotten any of it yet. I previously came from Official Nougat LOS, and then changed to xiaomi.eu ROM before finally change to this genuine stock MIUI. I got that issue in both LOS and xiaomi.eu.
Restarting couldn't help me.
IvanKurnia said:
I think your problem is a unique case, I can't relate. However, I DO get those touchscreen problems. I get that very-very-rarely. A forced restart by holding the power fixes it.
I recently changed to MIUI 9.5.6.0, haven't gotten any of it yet. I previously came from Official Nougat LOS, and then changed to xiaomi.eu ROM before finally change to this genuine stock MIUI. I got that issue in both LOS and xiaomi.eu.
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Maybe there is some hardware issue. But why after flashing the stock rom it doesn't responding.
Do you use original touch? Or focaltech?
If you change some hardware i recommend to reinstall rom and kernel (the rom with fastboot).
Equally the battery (i think) may not generate this issue.
Oh! I remember in other device my charger freeze my phone... But its very rare... What charger do you use commonly?
Chrisis25 said:
Do you use original touch? Or focaltech?
If you change some hardware i recommend to reinstall rom and kernel (the rom with fastboot).
Equally the battery (i think) may not generate this issue.
Oh! I remember in other device my charger freeze my phone... But its very rare... What charger do you use commonly?
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I once got the touch repaired at the service center. It was 2 years ago. I have installed rom in edl mode. When the touch again worked on its own, there was only charger connected to it. The issue may not be with the charger. May be I should try with more local repair shops.
Use aida or other software to see touch model and if you have focaltech i recommend to you agni kernel 13. In Aroma do you set focaltech option.
If you have original touch the problem may be other...
flash agni use focaltouch libs
Chrisis25 said:
Use aida or other software to see touch model and if you have focaltech i recommend to you agni kernel 13. In Aroma do you set focaltech option.
If you have original touch the problem may be other...
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The touch is not working in twrp too. Any other way to install kernel. May be using miflash?
Rishab kaushik said:
The touch is not working in twrp too. Any other way to install kernel. May be using miflash?
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i dont know... do you can ask to developer to only focaltech compilation... equally i dont know... I believed that Focaltech was compatible in recovery but not in system (i never have Focaltech and im not sure if your problem is it.)
Your problem is very rare... but make me remember similar problems in notebooks with touchpad and steel case...
in some notebooks if the case is steel and you touch the case, the touchpad not work but if you dont touch the case work perfect (yeah... this is rare but in my opinion is "ground" (talking about electricity) problem.)
i dont have more ideas, your problem is very strange and probably hardware.
Good luck bro
Chrisis25 said:
i dont know... do you can ask to developer to only focaltech compilation... equally i dont know... I believed that Focaltech was compatible in recovery but not in system (i never have Focaltech and im not sure if your problem is it.)
Your problem is very rare... but make me remember similar problems in notebooks with touchpad and steel case...
in some notebooks if the case is steel and you touch the case, the touchpad not work but if you dont touch the case work perfect (yeah... this is rare but in my opinion is "ground" (talking about electricity) problem.)
i dont have more ideas, your problem is very strange and probably hardware.
Good luck bro
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Thanks for the suggestions. May be its more hardware related. It was just a luck when the touch worked on its own. May be some shorting is there. One more point I want to add is that when the battery was swollen the display bent too. Some impact may be on the motherboard too. The local repair guys confirmed touch is good. May be the motherboard is dying.
U.U
Remember: you can use keyboard and mouse USB if you need to use "Titanium Backup" or other app.
What's happened is most likely this. The swollen battery bent the mainboard's PCB and either cracked some solder joints or lifted a pad/broke a trace. Now you have bad, intermittent connection. You could probably reflow the joints using a hot air station but you wouldn't be here asking for help if you had the required tools. If it's a lifted pad under a big chip, that's simply too much work (anyone that can do that would ask for at least the cost of a new phone).
troolie said:
What's happened is most likely this. The swollen battery bent the mainboard's PCB and either cracked some solder joints or lifted a pad/broke a trace. Now you have bad, intermittent connection. You could probably reflow the joints using a hot air station but you wouldn't be here asking for help if you had the required tools. If it's a lifted pad under a big chip, that's simply too much work (anyone that can do that would ask for at least the cost of a new phone).
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From what I have seen on the pcb, there is a probable smd part near the power ic. You correctly inferred that I don't have tools to fully inspect/try blowing hot air. But I did tried blowing hot air using a hair dryer. I also do suspect that repair shops I went didn't tried that. Thanks for the suggestions.
troolie said:
What's happened is most likely this. The swollen battery bent the mainboard's PCB and either cracked some solder joints or lifted a pad/broke a trace. Now you have bad, intermittent connection. You could probably reflow the joints using a hot air station but you wouldn't be here asking for help if you had the required tools. If it's a lifted pad under a big chip, that's simply too much work (anyone that can do that would ask for at least the cost of a new phone).
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Some more questions. What is a lifted pad?
Some more insights are, Once the touch was worked on its own, it worked pretty well. I then purchased the battery and installed. Used the phone for 2 days. And then I downgraded and touch went unresponsive. Could it be really a hw issue? Well I too think that it's a hw issue. But couldn't help myself question this. Maybe there is some irregular voltage being supplied. The touch might now be accustomed to the power provided by the old battery?
Some devices can work with charger without battery (notebooks, some tablets and phones, i dont know if all)
Try with this to test if work fine all... If yes i recommend you test your battery voltage/ampers.
Chrisis25 said:
Some devices can work with charger without battery (notebooks, some tablets and phones, i dont know if all)
Try with this to test if work fine all... If yes i recommend you test your battery voltage/ampers.
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When the touch worked on its own, it was only without battery because i dumped the old one and didn't bought new because the touch wasn't working. When the touch worked it was connected to the charger only. Battery is giving output of 3-4 Volts.
Rishab kaushik said:
When the touch worked on its own, it was only without battery because i dumped the old one and didn't bought new because the touch wasn't working. When the touch worked it was connected to the charger only. Battery is giving output of 3-4 Volts.
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3 or 4? the bm47 (our battery if im right) suply 4.4v your problem may be this.
Chrisis25 said:
3 or 4? the bm47 (our battery if im right) suply 4.4v your problem may be this.
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The voltage when checked fluctuated bw 3 to 4. The multi meter reading was not showing volts after decimal. I will check. Again with a more accurate multimeter in a while.
The battery model is bm46 though. And what does 3.85 depict on the battery?
what i dont know (again)...
4.4v charger voltage (after pass of diode and otherf circuit?)
3.85v to output? (phone use)
if yes your multimeter reading is good (3v and 4v).
i try to help you with ideas but is very rare this.
Rishab kaushik said:
From what I have seen on the pcb, there is a probable smd part near the power ic. You correctly inferred that I don't have tools to fully inspect/try blowing hot air. But I did tried blowing hot air using a hair dryer. I also do suspect that repair shops I went didn't tried that. Thanks for the suggestions.
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Well, modern electronics use lead free solder with a melting point that's somewhere around 250°c. Basically you need an extra 100 degrees to reflow and I doubt your hair dryer can go as high as that. It's only good enough to melt adhesive.
Rishab kaushik said:
Some more questions. What is a lifted pad?
Some more insights are, Once the touch was worked on its own, it worked pretty well. I then purchased the battery and installed. Used the phone for 2 days. And then I downgraded and touch went unresponsive. Could it be really a hw issue? Well I too think that it's a hw issue. But couldn't help myself question this. Maybe there is some irregular voltage being supplied. The touch might now be accustomed to the power provided by the old battery?
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A lifted pad is when the copper contact is ripped off the board as a result of excessive flexing or overheat, usually under a big IC. This ends up damaging or cutting the trace leading to that pad. To fix that, you can only micro solder a very thin insulated wire under a microscope. You may need to desolder the component resting on that pad first to fix the pcb.
Certainly, a component might operate just a bit out of specs but since you don't have schematics, you'd have to do hours of guess work, assuming you already know how. I suppose you could randomly replace likely culprits and hope for the best but... Well, let's say it's far from ideal.