Hi all,
I've been having some trouble with my i9100g.
From time to time, the touchscreen is not calibrated correctly (see pics and explainations below). It doesnt seem to have any origins, just sudently uncalibrates, and a while later recalibrates...
On the 2 pictures i've been trying the same thing, draw a line on the top and bottom lines. When calibration is right, the line i draw ends up on the line i'm aiming. But when uncalibrated, you can see the lines and up in the middle of the square.
What can i do? Did any one experienced something similar?
I tryed asking to Samsung's support team, but in short they told me to f*** off.
Thanks for your help.
Sent from my GT-I9100G using XDA
Am i the only one with this problem?
Sent from my GT-I9100G using XDA
Are you on stock?
Sent from my GT-I9100 using xda premium
Have you tried cleaning your screen? The GS2's screen is affected quite badly by moisture.. but otherwise capacitive touchscreens normally don't need calibration.
Yup, i'm on stock, chinese stock by the way.
My screen seems clean. But that's an interesting remarque. I'll pay attention if it could be linked to the dirtiness of the screen. I doubt it though.
Sent from my GT-I9100G using XDA
I suffer from this problem like you, it's certainly the problem in software not hardware becauae , it doesn't always occur , I hope to solve this problem and help us
Please do that :
-Plug in the charger and do calibration test
-Plug it out and do the test again
And tell me what you found please
ers1983 said:
Please do that :
-Plug in the charger and do calibration test
-Plug it out and do the test again
And tell me what you found please
Click to expand...
Click to collapse
Ow, very nice. It does seems to be linked to the charger.
I'll need to check this out on a longer periode of time, but plugging and unpluggin the charger does has an effect on the calibration.
What i saw as was testing just now, most of the time i plugin the calibration screws up an goes back to normal as i unplug.
Very interesting...
Sent from my GT-I9100G using XDA
chewee133 said:
Ow, very nice. It does seems to be linked to the charger.
I'll need to check this out on a longer periode of time, but plugging and unpluggin the charger does has an effect on the calibration.
What i saw as was testing just now, most of the time i plugin the calibration screws up an goes back to normal as i unplug.
Very interesting...
Sent from my GT-I9100G using XDA
Click to expand...
Click to collapse
This is a known issue, especially cheap chargers (unfiltered output) may create lots of eccentric activity on capacitive screen. If you are not using stock charger... well I would definitely hesitate to plug a 500$ equipment on a 5$ charger. If you are using stock I don't know what u could do.. except buying a new one or try filtering ur electricity outlets.
I think you should thank ers1983, its his find
chewee133 said:
Ow, very nice. It does seems to be linked to the charger.
I'll need to check this out on a longer periode of time, but plugging and unpluggin the charger does has an effect on the calibration.
What i saw as was testing just now, most of the time i plugin the calibration screws up an goes back to normal as i unplug.
Very interesting...
Sent from my GT-I9100G using XDA
Click to expand...
Click to collapse
If you can tell the samsung support please do
I want solve to that problem,because I use phone while charging it most of the time
---------- Post added at 12:27 PM ---------- Previous post was at 12:20 PM ----------
emk2z said:
This is a known issue, especially cheap chargers (unfiltered output) may create lots of eccentric activity on capacitive screen. If you are not using stock charger... well I would definitely hesitate to plug a 500$ equipment on a 5$ charger. If you are using stock I don't know what u could do.. except buying a new one or try filtering ur electricity outlets.
I think you should thank ers1983, its his find
Click to expand...
Click to collapse
But I use the orginal one as I think
And I suffer from that ,what can I do ?
ers1983 said:
If you can tell the samsung support please do
I want solve to that problem,because I use phone while charging it most of the time
---------- Post added at 12:27 PM ---------- Previous post was at 12:20 PM ----------
But I use the orginal one as I think
And I suffer from that ,what can I do ?
Click to expand...
Click to collapse
I think u should be sure about the problem before acting, IF you have any similar device (capacitive screen and micro usb charger)you could test . U could try swapping ur charger with the other one and this would help you pinpoint the problem.
Try your phone with the other charger and try your charger with the other phone
After that if its adapter you can not do much its between you and ur repair service (But on the bright side you might buy another charger and be done with it), if its the phone you need to get it fixed(I hope u have guarantee). If its the electricity system you might buy a filtering electricity extension cable or try usb charging.
I try to use usb cable to charge but the problem still exist
can you tell me more about " filtering electricity extension cable " please , because I don't know about it
I actually use the stock HTC charger from my last phone. Also tryed the stock Samsung charger, same problem.
In a couple days, when i'll have the time, i'll try to do a hard reset, see if it actually solve anything.
Sent from my GT-I9100G using XDA
chewee133 said:
I actually use the stock HTC charger from my last phone. Also tryed the stock Samsung charger, same problem.
In a couple days, when i'll have the time, i'll try to do a hard reset, see if it actually solve anything.
Sent from my GT-I9100G using XDA
Click to expand...
Click to collapse
I'm waiting your test to tell me what you'll fined ,and any one can help us
ers1983 said:
I try to use usb cable to charge but the problem still exist
can you tell me more about " filtering electricity extension cable " please , because I don't know about it
Click to expand...
Click to collapse
I'm taking about EMI (electro magnetic interference) http://en.m.wikipedia.org/wiki/Electromagnetic_interference
If you try to charge a similar phone in your home and get the same issues, problem is probably with your home electricity otherwise id suggest to return ur device for repairs
Sent from my GT-I9100 using XDA
This is funny, because I've search all thread about calibration issue.
And looking if there were replies on my thread, I fall on this one.
Here is my thread : Touch screen calibration issue ?
So I'm not the only one having this issue.
At least 3 I9100G !
Is it only occuring on I9100G ?
Did you solved your problem ?
Is it linked to the charger ? It doesn't seem it is for me.
Did you send your mobile for repair ?
Nope, didn't solve it. It is linked with tue charger for me. To know that allows me to correct it myself (i know where to tap on the screen).
Sent from my GT-I9100G using XDA
Just solved this by updating to ICS.
Sweet...
Sent from my GT-I9100G using XDA
Which ICS version ?
I'm on 4.0.3, and I have the problem.(I9100GXXLPN)
Doesn't change if I charge or not.
4.0.4 official chinese rom
Sent from my GT-I9100G using xda app-developers app
Related
So while my phone is charging the touchscreen becomes a bit unresponsive on the sides. Anyway to resolve this?
Its a very common issue with s2 ..infact screen gets a bit hot too if you use the phone while charging..please read the users manual which came with your phone for more details.
Sent from my GT-I9100 using xda premium
Touch response is lowered while the phone is plugged in, from what I read Samsung does this to protect the digitizer, whether it's needed or not is debatable and some custom kernels eliminated this in GB, I dont know if it's been removed in ICS nor do I know if it's a good/bad idea to do so.
AFAIK it is a normal issue to have. I also sometimes have scrolling issues while charging.
To me it seems worse when charging from AC rather than USB / computer.
Sent from my GT-I9100
I think, but don't quote me on it, that some kernels can cause this to be worse and some improve the problem.
Sent from my GT-I9100 using XDA
Well I know for sure that my touchscreen was more responsive a couple of months ago (as I can also notice it if I carefully place my finger in the edges while not charging) but still tha k you guys
Sent from my GT-I9100 using xda premium
eso es normal, a mi tambien me pasa.
This happened to my iphone before and I fixed it by buying a new charger.
For me this problem seems have sth to do with the charger.If you got an extra charger you can try it out. Hope it helps
nekoworkshop said:
This happened to my iphone before and I fixed it by buying a new charger.
For me this problem seems have sth to do with the charger.If you got an extra charger you can try it out. Hope it helps
Click to expand...
Click to collapse
Yup, i think u have hit on it. Unbelievable that the charger that came WITH it (OEM) makes my Samsung Tablet 7.0 Plus was non-responsive while charging, but i just happened on accident to use a galaxy s ii charger (just the plug part as the inputs are different) and wow, can use the tablet 100% fast and responsive while being charged.
I just googled it to see if its just me and ur post came up, who'd of thunk it?! lol
as the title says .. my tablet isnt charging at all. the dock is 100% full battery and it isnt charging.. also tried connecting the tab directly to wall charger and still not charging.. anyone has the same problem?>.. if anyone has been threw this and solved the problem plz tell me.:crying:
Plug in only your tablet.... does the top left yellow light come on?
Sent from my Galaxy Nexus using xda premium
leyvatron said:
Plug in only your tablet.... does the top left yellow light come on?
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
yes it does.. it lights up .. but doesnt charge.. tried turning on .. and i always get the low battery icon on startup
I have the same problem! At first it would charge when connected to the dock, now nothing
sent from my galaxy s3
misterwal10 said:
I have the same problem! At first it would charge when connected to the dock, now nothing
sent from my galaxy s3
Click to expand...
Click to collapse
im going to send it back in a week if no one came up with a solution..
Check for dust on the connectors.
I had a tiny speck of dust on my dock connector that stopped it from charging, but still registered that it was connected.
nardoth said:
Check for dust on the connectors.
I had a tiny speck of dust on my dock connector that stopped it from charging, but still registered that it was connected.
Click to expand...
Click to collapse
i blew in the connector and connected the charger.. will see what will happen in 10 mins.. thanks for that.. u gave me hope.
Try flipping your AC plug 180°
Scumbag Inc. said:
Try flipping your AC plug 180°
Click to expand...
Click to collapse
its not about the plug.. even with the dock its not charging..
im pretty sure now that its a software issue.. .i just need a little juice to reinstall another rom.. thats all i wish for.
I had a similar issue, I could only charge through the dock, not with charger directly plugged into the tablet. I RMA`d it two times but the useless service tech sent it back claiming he found nothing wrong. What fixed it for me was opening the prime and switching off the power to the motherboard for about ten seconds. There is a small flip switch inside that does this. Some say that holding in the pinhole reset button for 30 seconds will do the same, and it`s definately worth a try. Also of course I would first of all try another charger as they have been known to fry.
Like you I was convinced it was software because it happened immediately after the .21 ota update and nothing else had changed.
Best of luck!
Sent from my Transformer Prime TF201 using Tapatalk 2
fordwolden said:
I had a similar issue, I could only charge through the dock, not with charger directly plugged into the tablet. I RMA`d it two times but the useless service tech sent it back claiming he found nothing wrong. What fixed it for me was opening the prime and switching off the power to the motherboard for about ten seconds. There is a small flip switch inside that does this. Some say that holding in the pinhole reset button for 30 seconds will do the same, and it`s definately worth a try. Also of course I would first of all try another charger as they have been known to fry.
Like you I was convinced it was software because it happened immediately after the .21 ota update and nothing else had changed.
Best of luck!
Sent from my Transformer Prime TF201 using Tapatalk 2
Click to expand...
Click to collapse
i am now trying new charger.. then if nothing happend, ill send it back to asus. i dont want to open the prime yet.. i want to explore all possible solutions first.
thank you for your help.. appriciate it. its good to hear that you are not the only one that has the same bloody problem. this tablet made me not buy any products from them.. they couldnt manage to deliver a good product.
bashir111 said:
i am now trying new charger.. then if nothing happend, ill send it back to asus. i dont want to open the prime yet.. i want to explore all possible solutions first.
thank you for your help.. appriciate it. its good to hear that you are not the only one that has the same bloody problem. this tablet made me not buy any products from them.. they couldnt manage to deliver a good product.
Click to expand...
Click to collapse
That`s one way to look at it, I for one have no problem with Asus. I think the blame should be wider spread between Asus, nVidia and Google. I don't think it's a coinsidence that the Nexus 7 was realesed when JB was ready, Tegra 3 with ICS was problematic. I have bought several Asus products both before and after the Prime and I'm very satisfied. The RMA issus are with a third party company since Asus has no service tech in Norway.
Sent from my Transformer Prime TF201 using Tapatalk 2
fordwolden said:
That`s one way to look at it, I for one have no problem with Asus. I think the blame should be wider spread between Asus, nVidia and Google. I don't think it's a coinsidence that the Nexus 7 was realesed when JB was ready, Tegra 3 with ICS was problematic. I have bought several Asus products both before and after the Prime and I'm very satisfied. The RMA issus are with a third party company since Asus has no service tech in Norway.
Sent from my Transformer Prime TF201 using Tapatalk 2
Click to expand...
Click to collapse
when they release a product that first has screen issues,, charging issues,,, and not with up to date hardware,,, i consider that really bad.. i am really bugged about the i/o speed and performance. the galaxy s3 is WAYYYYYY faster in their i/o ....thats why we get laggs , browser issues , etc..
bashir111 said:
as the title says .. my tablet isnt charging at all. the dock is 100% full battery and it isnt charging.. also tried connecting the tab directly to wall charger and still not charging.. anyone has the same problem?>.. if anyone has been threw this and solved the problem plz tell me.:crying:
Click to expand...
Click to collapse
It is quite possible there is something wrong with your power brick. i've had one go out
brownrt said:
It is quite possible there is something wrong with your power brick. i've had one go out
Click to expand...
Click to collapse
ive tried my sisters charger and it gave me the same result. its not charging at all.. but the light is on at the power button when its connected to the tab or the dock
Have you tried pressing the pinhole reset for 30 seconds? That's supposed to cut of the power to the mb, which did it for me.
Sent from my GT-I9300 using Tapatalk 2
fordwolden said:
Have you tried pressing the pinhole reset for 30 seconds? That's supposed to cut of the power to the mb, which did it for me.
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
pinhole????? WHERE IS IT?
fordwolden said:
Have you tried pressing the pinhole reset for 30 seconds? That's supposed to cut of the power to the mb, which did it for me.
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
the top one or the one on the side?
bashir111 said:
the top one or the one on the side?
Click to expand...
Click to collapse
The one on the side.
Sent from my GT-I9300 using Tapatalk 2
Several days ago my phone started behaving strangely. Whenever the phone is NOT plugged in, the battery icon flashes continuously. If i plug it in, it stops flashing and behaves normally to show the phone is charging. Also, when the phone is NOT plugged in, the lock screen says it is charging. My battery life is dismal.
When i unplug the phone the battery indicator remains at 100% for a long time, but then drops quickly.Since this started i have to charge the phone twice a day with only moderate usage.
I am now on Shostock2 4.1.5 and Siyah 4.1.1. I tried factory reset, clearing cache and clearing dalvik. I also tried installing a different kernel (dream kernel) and a different ROM (aberration), wiping data, cache and dalvik each time.
I searched the forums, and the only threads i found seem to point to a bad usb port. One thread suggested cleaning the port, which i did using alcohol and compressed air. It helped for about half an hour, and then the problem returned.
Everything seems to point to a usb port that for some reason makes the phone think it is plugged in all the time...perhaps it is somehow shorted? So, it sounds as if my next step is to replace the usb port.
Still, I wanted to ask if anyone had any other possible solutions i could try before sending the phone for warranty repair and get the port replaced (or replace it myself).
Any ideas?
You are being kind of vague here. For instance. U say u have to charge it twice a day with .moderate usage. What if your moderate usage is 2.5 hours screen on time or something. To me, that means of course u will need to charge again if u want to make it he whole day. A bit moar info? Some cowbell?
Sent from my SGH-I777 using Tapatalk 2
Phalanx
Moderate usage means (for me anyway having the phone on, wifi on, gps off, no gaming. I only turn the screen on to check email for a couple of minutes here and there, and to answer the occasional call. Before the problem started my phone used to go all day without recharging. Now, even if i let the phone sit, unused, untouched, screen off (like overnight) battery level will drop over 10%per hour. I tried using better battery stats but none of the triggers have been triggered: if i try "since unplugged" or "since charged" or "since screen off" they all show zero seconds...I'm guessing that being "plugged in" continuously is messing with the triggers.
Still, the battery drain is not really the problem. The problem is that the phone seems to think it is plugged in continuously, even when it is not. It sounds like a bad usb port, or a port about to fail completely, but before i try to replace it i wanted to know if anyone had any other possible ideas.
People usually scrub the inside of the port with an alcohol swab if I'm not mistaken. Thought I've seen that posted, never had this problems myself.
Sent from my SGH-I777 using Tapatalk 2
My USB port needs to be replaced due to wear ( loose fit of cable). The ones for I777 I have found are $7.00 but are port alone, ones that are for I9100 are $15.00 but are attached to the ribbon cable. I plan to take phone apart to try to determine if the I9100 part will work. The price to have it repaired by MobileTechVideos is $40.00 plus shipping.
Adfurgerson
Let me know what you.find out. I may be heading in that direction very soon.
wgoldfarb said:
Adfurgerson
Let me know what you.find out. I may be heading in that direction very soon.
Click to expand...
Click to collapse
For the battery stats have you tried setting a custom reference?
Sent from my SGH-I777
wgoldfarb said:
Adfurgerson
Let me know what you.find out. I may be heading in that direction very soon.
Click to expand...
Click to collapse
I will do that, more than likely look at it this weekend.
Here is a video link.
http://www.youtube.com/watch?v=aChzv3IzxsU
adfurgerson said:
I will do that, more than likely look at it this weekend.
Here is a video link.
http://www.youtube.com/watch?v=aChzv3IzxsU
Click to expand...
Click to collapse
Definitely sounds like symptoms of a bad USB port to me. One thing you might do if you want additional confirmation, is to flash back to stock firmware (to rule out firmware issues...though I don't know of anyone who has confirmed this type of symptom being caused by bad firmware) and grab an older copy of BBS that will continue to report stats when plugged in (or maybe it will still do this if you set custom ref? I haven't tried.) There is a wakelock that will show for plugged in...vbus_present I think it is. Or you can also watch CPUSpy - if it continually thinks it's plugged in you'll get zero deep-sleep.
Thanks everyone for the suggestions.i tried sering a custom reference in bbs but no luck. No matter what i try they all show zero seconds. If i look at the battery graph in the system menu, it says the phone has been charging non-stop for the past two days, which is not the case. I will try cpuspy and report back.
Get a tooth pick and push up or down on the metal insert inside of port. May take a few tries but will work. I believe it is caused by your chargers 5 little metal cables bent when you plug into phone...
Sent from my SGH-I777 using xda app-developers app
BBS update
FYI - I just grabbed the latest RC for BBS, and it now has a toggle-able option to log stats while charging (with a caveat to use at your own risk...stats may be inconsistent). Might be another tool for further investigation.
Phalanx7621 said:
You are being kind of vague here. For instance. U say u have to charge it twice a day with .moderate usage. What if your moderate usage is 2.5 hours screen on time or something. To me, that means of course u will need to charge again if u want to make it he whole day. A bit moar info? Some cowbell?
Sent from my SGH-I777 using Tapatalk 2
Click to expand...
Click to collapse
Wow your posts are hilarious!! MORE COWBELL!!
Sent from my SGH-I777 using Tapatalk 2
Chris V said:
Get a tooth pick and push up or down on the metal insert inside of port. May take a few tries but will work. I believe it is caused by your chargers 5 little metal cables bent when you plug into phone...
Sent from my SGH-I777 using xda app-developers app
Click to expand...
Click to collapse
I tried cpu spy. i left the phone untouched, unplugged screen off for about 90 minutes. Cpu spy shows the phone spent almost all of that time at 200 mhz, never entered deep sleep. So it does seem to be a hardware problem, where the phone thinks it is plugged in continuously. i will carefully try the suggestion above to straighten the pins inside the port..maybe they are bent and somehow shorting. If i screw up the port....well, i probably have to change it anyway
jroc716 said:
Wow your posts are hilarious!! MORE COWBELL!!
Sent from my SGH-I777 using Tapatalk 2
Click to expand...
Click to collapse
always room for that
Sent from my SGH-I777 using Tapatalk 2
wgoldfarb said:
Adfurgerson
Let me know what you.find out. I may be heading in that direction very soon.
Click to expand...
Click to collapse
I fixed my issue with a new cable. Didn't need to take it apart like I thought.
Can this be replaced by warranty?
Sent from my SGH-I777 using xda app-developers app
willbs94 said:
Can this be replaced by warranty?
Sent from my SGH-I777 using xda app-developers app
Click to expand...
Click to collapse
Have u tried to fix it yourself? Have u read this thread and Google searched anything u didn't understand? No need to send it for replacement until u know it's the usb port and not your charging cable or some other easy fix.
Sent from my SGH-I777 using Tapatalk 2
Phalanx7621 said:
Have u tried to fix it yourself? Have u read this thread and Google searched anything u didn't understand? No need to send it for replacement until u know it's the usb port and not your charging cable or some other easy fix.
Sent from my SGH-I777 using Tapatalk 2
Click to expand...
Click to collapse
Well it's not my cable. What it does is act like it is connected with no cable being connected. Therefor causing it to act like it is charging. Then it prevents deep sleep and wakes and vibrates every so often. Really quite annoying and killer to battery life...
Sent from my SGH-I777 using xda app-developers app
willbs94 said:
Well it's not my cable. What it does is act like it is connected with no cable being connected. Therefor causing it to act like it is charging. Then it prevents deep sleep and wakes and vibrates every so often. Really quite annoying and killer to battery life...
Sent from my SGH-I777 using xda app-developers app
Click to expand...
Click to collapse
See my previous post asking what you've done to try and fix it.
Sent from my SGH-I777 using Tapatalk 2
So I have had this I9100 for about a year. Flashed with CM10.1 long ago and been reflashing new nightlies when i see stuff on the github log that address bugs I want fixed. Anyway the other night I put my phone charging, I didnt flash anything that night just a normal day. Next morning phone is dead. Wont charge, wont boot, no recovery no download mode, PC wont detect anything when I connect via USB. Odd thing is that now when the battery is inside the phone it starts heating up like crazy on both sides of the back camera/sim card slot, I guess where the CPU is.
So I searched for people with dead and bricked S2 and didn't find anyone with this problem, then I searched for people with other phones and again no one with this problem.
So I was wondering if USB jig would be able to help me, or JTAG, or if its just the usb board that died since it was while charging and it gives off no signal via USB to a computer and if I changed that it would come back to life.
What do you guys think? Was it the main board or is it just a fried USB board and the phone can't regulate power without it?
Sounds like the USB board, but you never know until someone 'qualified' has a look at it. We've had a lot of similar problems on here over the past two weeks (this week in particular I've seen maybe 5-6).
Doubt a jig or JTAG would be any good given it isn't a firmware type issue by the sound of it.
I guess I'll order a usb board a replace it. If it doesnt work its not expensive anyway. About $10.
I was wondering if there have been a lot of people lately with this problem could it have been one of the nightlies that screwed up power management and fried the board?
Sent from my GT-I9300 using xda app-developers app
Yep if you can get a cheap one 2nd hand it's no great loss if it doesn't work & you end up needing to replace the MB as well. If you need them, I attached the SGS2 service manuals to a post of mine a day or two ago (click on my name & have a look through my posts over the past few days) if you need/want them.
That's an interesting theory. Not being a dev, I'm not up to spec on whether anything at, say, kernel level could cause something like that to happen (In the 18 months I've been here, I've never seen a kernel/firmware pinned down as the cause of something like this), but you wouldn't say it's impossible.
Edit - Here you go, the zip is attached to this post.
MistahBungle said:
Yep if you can get a cheap one 2nd hand it's no great loss if it doesn't work & you end up needing to replace the MB as well. If you need them, I attached the SGS2 service manuals to a post of mine a day or two ago (click on my name & have a look through my posts over the past few days) if you need/want them.
That's an interesting theory. Not being a dev, I'm not up to spec on whether anything at, say, kernel level could cause something like that to happen (In the 18 months I've been here, I've never seen a kernel/firmware pinned down as the cause of something like this), but you wouldn't say it's impossible.
Edit - Here you go, the zip is attached to this post.
Click to expand...
Click to collapse
Thanks I'll try ordering and replacing it to see if it lives again. Will report back in a few weeks with results.
Sent from my GT-I9300 using xda app-developers app
Yep let us know how you get on, if you need to know or think of anything else, post to this thread again.
ZehL said:
So I have had this I9100 for about a year. Flashed with CM10.1 long ago and been reflashing new nightlies when i see stuff on the github log that address bugs I want fixed. Anyway the other night I put my phone charging, I didnt flash anything that night just a normal day. Next morning phone is dead. Wont charge, wont boot, no recovery no download mode, PC wont detect anything when I connect via USB. Odd thing is that now when the battery is inside the phone it starts heating up like crazy on both sides of the back camera/sim card slot, I guess where the CPU is.
So I searched for people with dead and bricked S2 and didn't find anyone with this problem, then I searched for people with other phones and again no one with this problem.
So I was wondering if USB jig would be able to help me, or JTAG, or if its just the usb board that died since it was while charging and it gives off no signal via USB to a computer and if I changed that it would come back to life.
What do you guys think? Was it the main board or is it just a fried USB board and the phone can't regulate power without it?
Click to expand...
Click to collapse
Did you try the ole toothbrush trick?? Get an old toothbrush and put it into the usb port an go mad. Sometimes a film can be on the terminals of the usb port, which gives you a bad connection.
" Odd thing is that now when the battery is inside the phone it starts heating up like crazy on both sides of the back camera/sim card slot, I guess where the CPU is. "
This doesn't sound good!
Try that toothbrush trick first before buying anything
Also did you try another galaxy 2 battery? Your battery could be dead. Have you got a multimeter handy?
bahmonkeys said:
Did you try the ole toothbrush trick?? Get an old toothbrush and put it into the usb port an go mad. Sometimes a film can be on the terminals of the usb port, which gives you a bad connection.
" Odd thing is that now when the battery is inside the phone it starts heating up like crazy on both sides of the back camera/sim card slot, I guess where the CPU is. "
This doesn't sound good!
Try that toothbrush trick first before buying anything
Also did you try another galaxy 2 battery? Your battery could be dead. Have you got a multimeter handy?
Click to expand...
Click to collapse
Yep first thing i did was multimeter. Was at 4 volts. I'm going to try the toothbrush thing and report back.
EDIT: The toothbrush didn't solve it.
Sent from my GT-I9300 using xda app-developers app
ZehL said:
Yep first thing i did was multimeter. Was at 4 volts. I'm going to try the toothbrush thing and report back.
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With the multimeter check is there a voltage coming from the battery. The battery by itself!. Next leave the battery out from your phone and plug in your charger (which is connected to the wall). Put the multimeter across the appropriate terminals of the phone and measure the voltage if any.
Report any voltages values you have
bahmonkeys said:
With the multimeter check is there a voltage coming from the battery. The battery by itself!. Next leave the battery out from your phone and plug in your charger (which is connected to the wall). Put the multimeter across the appropriate terminals of the phone and measure the voltage if any.
Report any voltages values you have
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Click to collapse
The battery gives off a steady 4.
The phone connected to the wall without battery gives off 1.3 when first connected or the battery removed and then very slowly starts dropping to 0 going slower as it drops. By the appropriate terminals i imagine you mean the ones that connect to the battery wherethe battery has the + and - symbols.
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ZehL said:
The battery gives off a steady 4.
The phone connected to the wall without battery gives off 1.3 when first connected or the battery removed and then very slowly starts dropping to 0 going slower as it drops. By the appropriate terminals i imagine you mean the ones that connect to the battery wherethe battery has the + and - symbols.
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That USB port is working, battery is fine. Next the screen might be dead. First check to see if the backlight is working. Turn on your phone as you would normally shine a light onto the screen and see if you can see anything. Use a flashlight or something with a high focused beam
bahmonkeys said:
That USB port is working, battery is fine. Next the screen might be dead. First check to see if the backlight is working. Turn on your phone as you would normally shine a light onto the screen and see if you can see anything. Use a flashlight or something with a high focused beam
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If it was the screen my phone would still vibrate at the end of bootup right?
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Bootloop is....well....a loop....a never ending cycle. ...if your phone is in bootloop it won't get far enough into the startup process to be able to vibrate. .....
Sent from my Rooted, De bloated Stock JB powered S2 via PhilZ kernel and Tapatalk 2....
ZehL said:
If it was the screen my phone would still vibrate at the end of bootup right?
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Keith is right. Also not all phones vibrate on bootup, depending on rom and kernel.
Did you check to see if you can see anything on your screen using a light?
bahmonkeys said:
Keith is right. Also not all phones vibrate on bootup, depending on rom and kernel.
Did you check to see if you can see anything on your screen using a light?
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My phone did. But i tried the flash light anyway. Nothing on the screen.
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That vibration normally only happens towards the end of a successful boot....so if you've felt that vibration, the chances are that you don't have a bootloop. .....the phone would *appear* to be starting normally. But if you can't see anything on the screen, your problems will lie elsewhere.....
Sent from my Rooted, De bloated Stock JB powered S2 via PhilZ kernel and Tapatalk 2....
keithross39 said:
That vibration normally only happens towards the end of a successful boot....so if you've felt that vibration, the chances are that you don't have a bootloop. .....the phone would *appear* to be starting normally. But if you can't see anything on the screen, your problems will lie elsewhere.....
Sent from my Rooted, De bloated Stock JB powered S2 via PhilZ kernel and Tapatalk 2....
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Click to collapse
So batery and usb charging normal. No screen problems, and heating cpu while off. Most likely main board fried? I'm gonna get some resistors to make a jig and try that anyway. Do you guys thinks 330k ohm will work too? I know its 300k ohm buthave some resistors around that add up to 330 and i wouldnt need to go buy more tomorrow.
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Yeah...that CPU heating is a worry.....it's obviously being forced to do something that it wasn't intended to do....and it doesn't like it.....
And with regards to changing the impedance of the jig....probably not advisable. ....micro electronics is very sensitive to resistance and voltage. ...what you're doing with the jig is essentially bridging two connectors. ...
Impedance too low....too much current/voltage passes.....things might begin to get hot (best case)
Impedance too high.....too little current/voltage passes.....no effect.....
Sent from my Rooted, De bloated Stock JB powered S2 via PhilZ kernel and Tapatalk 2....
keithross39 said:
Yeah...that CPU heating is a worry.....it's obviously being forced to do something that it wasn't intended to do....and it doesn't like it.....
And with regards to changing the impedance of the jig....probably not advisable. ....micro electronics is very sensitive to resistance and voltage. ...what you're doing with the jig is essentially bridging two connectors. ...
Impedance too low....too much current/voltage passes.....things might begin to get hot (best case)
Impedance too high.....too little current/voltage passes.....no effect.....
Sent from my Rooted, De bloated Stock JB powered S2 via PhilZ kernel and Tapatalk 2....
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Ill buy some resistors tomorow then.
I wad thinking does a normal s2 perform any operation that may involve processing when putting in a batery without turning it on?
I was asking this because it could be some sort of loop in some process it does when detecting a batery.
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Well, I'm sure I remember reading *somewhere* that Android phones have a secondary/simplified/low level kernel that runs even when the phone is switched off......apparently that was how some phone on verizon was hacked or something.......
Whether that's true or not....I don't know....
If it is....it could fit in with what you're suggesting....
Sent from my Rooted, De bloated Stock JB powered S2 via PhilZ kernel and Tapatalk 2....
My i9300 all of a sudden stops charging.
I disassembled it and the next day decided to plug it in again. It charged up until 48%, when i plugged it out for use again.
Now, one day later it again won't charge... weird?
I'm trying to buy a usb port connector and want to replace it as i think the problem lies there, but how do i do this?
All the youtube video's are only replacing the simple stuff.
I have tried using another battery + batterycharger, this is not the problem. The phone still doesn't charge. I really suspect there is oxidation inside the USB connector.
Hope there's anybody who can help with replacing it.
should be the cable problem? many cases on this!
If you don't know any better about hardware, why don't you just buy an additional battery and battery charger... through could be little bit inconvenient
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qtwrk said:
If you don't know any better about hardware, why don't you just buy an additional battery and battery charger... through could be little bit inconvenient
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I have tried using another battery + batterycharger, this is not the problem. the phone still doesn't charge.
Galaxy S3 bug
May be this is a bug of galaxy s3
even i have a galaxy s3 with jelly bean installed in it from factory, i connected it with my laptop and it was working normally but after 2-3 days i noticed that my device was unable to connect via usb so i flashed it and factory resetted my divice and bam ! it was back to normal, may be you can give it a shot
sdey.dey said:
May be this is a bug of galaxy s3
even i have a galaxy s3 with jelly bean installed in it from factory, i connected it with my laptop and it was working normally but after 2-3 days i noticed that my device was unable to connect via usb so i flashed it and factory resetted my divice and bam ! it was back to normal, may be you can give it a shot
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Click to collapse
Thanks but this isn't the case with me. I really suspect there is oxidation inside the USB connector. So could anyone help with how to replace this? I live in the Netherlands.
You said you dissembled it, you have enough knowledge about it?
I don't have much myself too but I tried my hands on my older devices in many cases, so I can only suggest you that the charging point which is a usb port would be connected to your pcb which needs to be disconnected with the help of an soldering iron and then you can replace it with a new one. However do it only if you have subsequent knowledge.
Also before trying anything try more chargers, I came to know that none of the generic and few original ones couldn't charge mine too. Check for their voltage.
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what about a service centre ?
LentoViolentoMan said:
Thanks but this isn't the case with me. I really suspect there is oxidation inside the USB connector. So could anyone help with how to replace this? I live in the Netherlands.
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You should visit a samsung service centre, they may cahnge it for free if your device is under warrenty
All the best
sdey.dey said:
You should visit a samsung service centre, they may cahnge it for free if your device is under warrenty
All the best
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alright, thanks for the reply. But my device is flashed around 1000 times and it looks like i opened beercans with it. So this would not create a healthy warranty argument i guess. This is why i'm trying to do it myself.
Now all of a sudden it charges again, when i left it at the charger... so definately no charger problem. maybe oxidation/waterdamage from raindrops?
Triangle away
LentoViolentoMan said:
Now all of a sudden it charges again, when i left it at the charger... so definately no charger problem. maybe oxidation/waterdamage from raindrops?
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Click to collapse
You have already flashed your device 1000's of time, soo i'd recommend you to flash it back to stock and try triangle away application
It did work for me
Soo .. if you manage too get system status back too normal, you can easily claim your warrenty
Put it in a bag of rice for a day so any water kind of damage is gone.
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sdey.dey said:
You should visit a samsung service centre, they may cahnge it for free if your device is under warrenty
All the best
Click to expand...
Click to collapse
No warranty user disassembled .
jje
it randomly starts charging and stops charging now. same with connecting to pc, sometimes it does and sometimes it doesn't connect...
no cable issue.
If you are afraid about any water or moisturizer fault, put it in a bag of rice for a day.
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nicesoni_ash said:
If you are afraid about any water or moisturizer fault, put it in a bag of rice for a day.
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also when you think the water has already dried up?
Yeah, sometimes water dried up and formed in iron too but I can't be sure that could be your problem.
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nicesoni_ash said:
Yeah, sometimes water dried up and formed in iron too but I can't be sure that could be your problem.
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yeah oxidation, but rice doesnt take away oxidation on iron right?
LentoViolentoMan said:
yeah oxidation, but rice doesnt take away oxidation on iron right?
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Yeah right, it could handle moisturizer but once it's oxidative, rice cannot help.
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