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Hi all,
I have an AT&T Samsung Galaxy S 2 (i777). It was rooted and running CM 10.1. A few months ago it started to have charging/USB port issues. Some of the symptoms:
-Sporadic charging (starting and stopping)
-Required USB jiggling to get it to start charging
-Sometimes wouldn't charge at all until it died, then would eventually charge while powered off
-Would not shutdown (only reboot, even if the battery was removed)
-Randomly started "car mode"
My initial thoughts on this were USB port issues. After doing some research on people with similar problems, I tried cleaning the port with alcohol, toothbrush, compressed air, etc. No avail.
Eventually the phone just stopped charging altogether. At this point, if I left it plugged in, it would sit in a continuous boot loop (boot, get to lock screen, realize it has no juice, shutdown, rinse, repeat). After a few days of attempting to charge and just having that happen, it went black and has never turned on since.
To try to solve that, I bought a new USB port flex cable on eBay and replaced it, assuming this would solve all my USB port issues. I tried to be as ESD safe as possible and also not break anything in the phone, but after replacing the board, it still wouldn't boot.
Next step- bought a new battery with an external charger to skip the USB port altogether and see if the battery was shot. Charged up the new battery, popped it in, nothing.
I'm at a total loss. If it started as a charging problem, I don't see how the problem could have been anywhere but the flex cable board or the battery. Does anyone have any ideas about what might be going wrong? I would REALLY appreciate some insight.
Thanks!
Maybe the repeated loops damage it
Sent from my GS4 running CM11 Kandy Kane
aptbosox said:
Hi all,
I have an AT&T Samsung Galaxy S 2 (i777). I
Eventually the phone just stopped charging altogether. At this point, if I left it plugged in, it would sit in a continuous boot loop (boot, get to lock screen, realize it has no juice, shutdown, rinse, repeat). After a few days of attempting to charge and just having that happen, it went black and has never turned on since.
To try to solve that, I bought a new USB port flex cable on eBay and replaced it, assuming this would solve all my USB port issues. I tried to be as ESD safe as possible and also not break anything in the phone, but after replacing the board, it still wouldn't boot.
Next step- bought a new battery with an external charger to skip the USB port altogether and see if the battery was shot. Charged up the new battery, popped it in, nothing.
I'm at a total loss. If it started as a charging problem, I don't see how the problem could have been anywhere but the flex cable board or the battery. Does anyone have any ideas about what might be going wrong? I would REALLY appreciate some insight.
Thanks!
Click to expand...
Click to collapse
Did you ever find a solution? I'm in the no charge boot loop after letting it die last night.
I have not seen previous usb problems at all. I suspect that my battery got over-drained, but then I've got the same symptoms as you and you have a new battery. I can get it into recovery but t won't stay on in CWM for long enough to fix permissions, which is the only thing I've tried so far in CWM.
Thanks
If i was in your place i'd have taken it to the nearest Samsung Service center and let them fix it for me.
I think the fluctuation in power may have damaged your phone battery point from where it takes power from the battery and charge it.
Maybe it has damaged the motherboard.
We cannot say anything in this situation.
You should just take it to your nearest service center.
Best of Luck
OK, wiping Data fixed it.
Thanks for your reply. This problem just started this morning with no previous issues, doing the looping part of your problem that I quoted. so it's not a question of what I might have done.
But, for others encountering my part of it, here's what I've done and learned so far today.
As I looked into things elsewhere on the , it seemed to be a software problem. Luckily, I have another Galaxy (Exhibit) that's similar battery and I was able to put the charged battery from it into the SII. The SII booted and worked fine but did not charge. I put the SII battery into the Exhibit (sorta fits). It took a charge.
This confirmed to me that it's not the battery. It must be the phone perhaps USB port or more likely "firmware" since problem started abruptly after draining battery down.
I then wiped data on the SII from CWM/recovery and rebooted.
SII is now charging again. Stock battery is back in and working.
Time will tell if all is well, but here's what I think happened:
1) battery drained down to zero while unplugged
2) plugging in and starting up phone immediately threw something off in the battery stats at a low level...that kept it from charging even when turned off. Or rather threw it into a loop. Don't really understand this stuff, but may have to do with physical things that happen in a battery when the cells drop down way low and then the voltage feedback they give to charging circuit.
3) charging battery in another device (gingerbread, by the way) got the battery out of this, if battery had been a contributing factor,(or just a trigger) it was back over the hump.
4) wiping data fixed the charging, so I conclude it was a charging circuit data issue triggered by an ultra low battery.
Hope I'm over this problem and hope that it helps somebody else. If you run into this yourself with no previous USB or hardware issues, I'd suspect software before hardware. If I had only one battery and no way to charge it externally, I would suggest get one of those simple universal clip-on chargers to bring the battery back up and then go into CWM and wipe data.
UPDATE: It's stopped charging again. It's no longer looping since I got the battery charged up, but not right either. As soon as I plug it into a USB, it boots itself without powering on.
I guess that this is looking more like a physical USB issue now. Weird that there's been no previous sign of trouble before today.
UPDATE2: I cleaned USB port but no help. Then I bent the USB contacts towards the screen and it is charging now again. I'm ordering a replacement USB.
I should add that I'm running Shostock Jellybean, older (not current) version with it's associated Jeboo kernel. Don't know if it matters.
I wish I'd seen your post sooner.. I had exactly the same problems back in January. Took all the same steps you did. In the end, an 8$ USB flex cable from EBay solved the problem. I think you'll have luck with that:thumbup:
Sent from my Slimbeaned Sgh-I777 (unbricked x4 )
hey, I'm experiencing the same issue slightly different.
-Sporadic charging (starting and stopping)
-Randomly started "car mode"
-plugged in the charger while the device is switched off, it automatically turns the device on.
-If the cable still plugged in while the charger removed from the main current, it shows "Charging stopped. High voltage"
-From yesterday, it doesn't charge even. Only way to charge is, connect the charger first and then Restart the device.
Then only charging continuous.
Can anyone help to solve this? Is this a software issue?
Thanks!
---------- Post added at 04:50 AM ---------- Previous post was at 04:46 AM ----------
Also, there was this issue early --> when I charge it from the laptop, the USB mode doesn't switch on. It just charge the phone only.
But now it's not even working like that.
Tweaker7376 said:
I wish I'd seen your post sooner.. I had exactly the same problems back in January. Took all the same steps you did. In the end, an 8$ USB flex cable from EBay solved the problem. I think you'll have luck with that:thumbup:
Sent from my Slimbeaned Sgh-I777 (unbricked x4 )
Click to expand...
Click to collapse
Which flex cable you bought exactly...plz give me the link...i badly need one...thx
mmystere68 said:
Which flex cable you bought exactly...plz give me the link...i badly need one...thx
Click to expand...
Click to collapse
Hey bro.. I've been offline forever.. Did you ever get what you needed?? I can pm you some info:good:
Tweaker7376 said:
Hey bro.. I've been offline forever.. Did you ever get what you needed?? I can pm you some info:good:
Click to expand...
Click to collapse
Tweaker7376 said:
I wish I'd seen your post sooner.. I had exactly the same problems back in January. Took all the same steps you did. In the end, an 8$ USB flex cable from EBay solved the problem. I think you'll have luck with that:thumbup:
Sent from my Slimbeaned Sgh-I777 (unbricked x4 )
Click to expand...
Click to collapse
hi, my s2 wont charge. It just shows up charging when plugged in but it doesnt charge at all. and it overheats too much while plugged in. What is that flex cable you said, is it the one that connects the charging port to the motherboard? were you the one opened and replaced it? thanks
Im using android 4.0.4 (officially updated) on my galaxy s2 and when i put the charger the phone dont even recognize it ,and it shows like is charging all the time.The battery icon on the corner keeps going and showing again after some min i take out the charger .This happens until buttery goes to 60% or something like that and than the text (charging) on the lock screen goes away and the icon on the corner stays like normal,but if i put the charger the same thing happends again. I tried different chargers and another battery.
My brother told me that after i updated my phone he saw something like "Charging paused. Voltage too high" but i havend seen it anomore.The battery on options menu says "1 day 8 hours 16m 33s on battery which is not normal i thing"
Please help me with this thing.
sorry for my bad english.
funnycun said:
Im using android 4.0.4 (officially updated) on my galaxy s2 and when i put the charger the phone dont even recognize it ,and it shows like is charging all the time.The battery icon on the corner keeps going and showing again after some min i take out the charger .This happens until buttery goes to 60% or something like that and than the text (charging) on the lock screen goes away and the icon on the corner stays like normal,but if i put the charger the same thing happends again. I tried different chargers and another battery.
My brother told me that after i updated my phone he saw something like "Charging paused. Voltage too high" but i havend seen it anomore.The battery on options menu says "1 day 8 hours 16m 33s on battery which is not normal i thing"
Please help me with this thing.
sorry for my bad english.
Click to expand...
Click to collapse
check the usb port may need cleaning this happened to me and one of pins were bent unlucky for me i fiddled and broke usb completely now i swap battery's from desktop charger.
DJBoxer said:
check the usb port may need cleaning this happened to me and one of pins were bent unlucky for me i fiddled and broke usb completely now i swap battery's from desktop charger.
Click to expand...
Click to collapse
Hmm , can you tell me how to clean the port or what to use not to bent them and one more thing, as i can see the pins are so small so how do i know if one of them is bent or not
,,,
tried cleanin the port,removing the battery for 20 min and still the same
its port problem, i tried fixing myself but didnt work, i had exact same problem, i sent it in for warranty, and samsung just sent my phone back today, and they replaced "usb port" according to receipt
"Cyber Clean" did it for me, was able to get in to the tiny spots and pull out the dust, etc. that was causing the problem.
DO NOT try to shove anything hard (Like a Q-Tip) into the space, it will break the connection.
You can also place a *newish* USB port in and out a few times, often that can dislodge whatever got in there.
BE VERY GENTLE as this is the weak part in the phone. If you break this you will need to use a wall charger.
i tried cleanin with a lot of things and it seems to be so clean now and the pins are not bent , but i dont think that the problem is at this part because when the battery goes under 60% everything returns to normal ...
I also have the same issue...is it the hardware or software issue?? kindly assist....
This is called "ghost charging". It has dozens of threads already, use the search before posting.
Your solution is here - http://bit.ly/10U9n1r
Sent from my digital submersible hovercraft.
Hello,
I have been struggling to find a solution for months now. My problem with the LG G5 started when it complained about the bottom cover. Every now and then it would show a screen that the bottom cover is not plugged in correctly. By unplugging and plugging it a few times the screen would go. Eventually, although I am not sure if it is related, the phone stopped turning on. When the USB cable is plugged in I get a screen showing the battery is at 0% and the red LED flashes as well.
I have tried the following:
1) Replaced the battery
2) Replaced the bottom cover
3) Inspected the logic board and cleaned it with a PCB cleaner.
Note that the phone had no contact with water.
I would really appreciate it if someone knows what could be the fault.
Many thanks
I recently picked up this galaxy s6 edge from a friend that upgraded to a new phone. It won't turn on, neither to android recovery, nor to download mode nor the android. I charged it via wireless charging overnight and i tried for around an hour with a usb cable. What do i do?
same issue i am facing, i tried original charger, wireless charger and fast chargers from many different brands. but all failed. The device only gets warm/hot while charging and nothing happens. neither download mode nor recovery mode works. I am kind pf stuck without any solution, my device was used very rarely and its like an brand new device. Doesn't know what to do, if you find any solution then please let me know too. thanks in advance
Same problem. If I press power button very long, blue light comes on. Then it's stuck and stays like this until battery is flat. Battery charging is not possible: device heats up (tried USB and Qi), but battery doesn't take any charge.
So I opened the S6 and checked the battery directly. I can charge it directly with a lab power supply and when I plug it in and press power button, the blue notification light comes on again until battery is empty again. I can also see that only ICs get hot, but not the battery when plugging in USB.
So, it's definitely some hardware fault. I suspect power IC that is not able to power up the screen. But I don't know. I will investigate further but it looks difficult. However, I have seen many YouTube videos with same symptoms, but problem was always different than mine :/
Hi guys,
This thread is 2 months old, any of you managed to fix the problem?
I am having very similar problem. My phone was on a shelf for about a year and a half. Before now it was working perfectly. Now I can't charge it via USB or power adapter. When trying to power it up or get into download or recovery mode, nothing happens. Computer does not see it. Tried different cables, USB ports, power adapters..nothing.
The only thing that is happening to the phone is the battery logo appears when trying to charge it, though the green bar does not go over battery, only the empty grey battery with lightning icon in the middle. Also the screen does not go dark after a few seconds as it should and the red/blue LED does not turn on.
Is this the signal from the phone, that the battery is to deeply dischareged and cannot be charged again? I am googling all over the web and can't find anybody talking about what phone does in case of to low voltage on battery.
PS back does not seem to be bloated, USB port was working perfectly last time used
Please try to help, you are my last stop before opening the phone and start probing the poop out of motherboard to see what gave.
EDIT: something interesting happened just about an hour after my post. The battery suddenly started showing % of charge and the green bar started running, computer recognized the phone.. as everything should be.
My FIX: leave the phone pluged in and charging for about 3days and it will start working again.
My semi professional explenation of fix and problem: the phone has a ''backup or reserve'' battery. It is actually main battery but the last I think I read somewhere it is 20% of capacity, is reserved for phone exclusively for the clock and all other electronics that need power when switched off. Now these 20% probably were discharged due to laying around for almost 2 years.
It took me 3 days of charging to fill up these ''20%'' I guess. Probably because Lithium batteries are charged VERY slow at very start and end. This is safty procedure for ALL Li batteries.
If any expert can confirm my conclusion please do so, to help other people.
To answer partialy to my question: The phone tells you battery is ''deep'' discharged when you only see the charge icon without the green bar.
In the mean time I was writing this edit I came up to 4% battery and turned it on!
BR Friend
hi there
it looks like the logic board died HOURS (!!) after a problematic charing of one of my two LG G5s:
I plugged the phone in an USB-socket built-in an night stand. It was a fancy hotel so I did not think of any charging issue. 1hr or so later I took my phone and it was warm - not damn hot - but hot! I've checked the phone, everything was working (calling, display, gps, ...). I removed the battery and checked the battery for a buldge - nothing. I let it cool down for 30min or so and it indeed cooled down to "normal operating temperature".
But then I noticed, that the battery hardly charged while being plugged in at that night stand built-in USB socket. So I used my original charger and cable and guess what: I got an notification: "slow charinging".
I thought nothing wrong with it, probably due the temperature or the battery got fried - but I had no time to sort out the issue as I had to check-out.
During the day I could use my phone normally: double tap the display to turn on or quickly turn off/on by pressing the on-button on the back. Except: charging always said "slow charging".
As I could not fully charge the phone, the battery soon was down to 7% (normal battery usage/drain). So I turned it off, swapped the battery with my 2nd LG G5 which was at 65% battery charge level. But guess what: the damn LG G5 did not boot! It was dead! I put the battery back to into my 2nd LG G5, everthing fine. I swapped the charging module - nothing.
At Home I tried to charge my "dead" LG G5, but I didnt even get a charging LED.
I inserted a 100% charged battery, LG G5 wont turn on
I replaced the charging module once again nothing (no charging LED)
I used Isopropanol on the on-button as suggested to fix the on-button nothing
I removed the logic board, and re-assembled it with the working display and back cover of my 2nd LG - nothing
I re-assembled the "dead display and charing module" with my 2nd LG logic board - the phone starts without issue
conclusion: back cover with all elements is fine
conclusion: display is fine
one again I re-assembled my "dead" logic board with both working display and back cover - nothing
assumption: logic board dead
But how? My phone was charging - but slowly. My phone was working till I shut it down. With "working" I mean everything worked, like camera, Internet, WiFi-Hotspot, .... everyhting worked just fine.
All my holiday data are unfortunately on the internal storage chip. Photos, Memos, GPS tracks .... all lost.
So my question is, is there anything else I could try to revive my logic board? perhaps the board is not even fried, but some contact issue? But how can I determine those issues? I mean, I disassembled the LG G5 since its release multiple times I think I reassembled everything fine. But who knows? of course i dropped the phone multiple times in years and now, once opened some broken contact could fall off?
On this video
(at 3:28min)
the guy is probing the power-on button. But I do not understand anything and youtube translation is not available.
Or is it possible to remove the "data chip" from the logic board and "put it onto another logic board"? Like swapping an SSD/HDD? As the phone is assumably dead, its the last thing I would try - if I destroy it, so be it, if it works - voilà. But I don't have any Idea which chips are the data storage chips:
On this video here
(3:00 minute mark) the guy is putting back on some "chips". Could those be the data storage chips? But I do not understand anything and youtube translation is not available for this video.
How would you proceed? I also thought to make a picture side by side comparison of my working logic board and the "fried" one. To see if anything is "different" - but I have no idea how to make such macro photos.
I know, i made a "similar" post some weeks ago ( https://forum.xda-developers.com/t/...placed-still-no-usb-connection-to-pc.4292207/ ) but this concerned my now "working phone".
cheerioh
SiS
@StehtimSChilf answered you in AH-Forum.