I suffer from the problem in s2 phone after it is installed with a charger
Begins with the phone restart alone
So do I disconnect
Is there a solution
Sounds like either the charger or the USB board in the phone. I'd replace the charger first given they're cheap/easy to get (you could always borrow someone elses just to test), then the USB board. You haven't mentioned whether you're running stock or a custom rom, so if you're running a custom rom, do a clean install of stock & test for a day or two to rule in/out a 'rom problem'.
Replacing the USB board is fairly easy (and doing it yourself will save you at least $50 in labour Vs paying a mobile repair shop to do it); KeithRoss39 has a guide in General (search for 'replacing USB charger board') which has all the info you need to get this done quickly/easily/cheaply (~US$10).
Related
Hey
my s2 wont charge from the wall charger or the pc. I tried
1- clean the port with comppressd air and a needle-no luck.
2- I swap batteries-no luck.
3- changed roms including going back to stock, formmating, wipe data and so on-NO LUCK.(now runing ics 4.03 rooted with speedmod 3.1 kernel)
4- tried other chargers and cables.
apperantly im facing hardware issue.I took it to a lab and they told me that it's not the usb flex cable but it's something to do with the voltages in my s2(they didnt know how to fix it) is anyone know what he was talking about or if there is anything to do other than sending it to samsung for reapir??maybe an app or something?
p.s
no warrenty
s2 will connect normally to pc but wont charge
my only option for now is to buy a couple of batteries and a s2 battery charger
Thanks
as you mention, swapping battery don't help, what make you think buying couple of batteries and a s2 battery charger will help?... (ignore this part, i get what you mean now)
you might have hardware failure, but i am not sure either, can provide more info? what do mean by not charging? what did you do prior having this issue?
did you flash any ROM prior to this?
TNX for the reply
prior to that i went to jellybean rom but still i could charge and it also worked well when i went back to ics
my guess is that- I have an old toshiba laptop and i plugged the phone with usb cable and nothing happend, it wont recognize my s2(my s2 was working fine till i plugged it to the toshiba laptop) and now the usb port on my laptop is not working and the s2 is not charging.I think it got zapped and the motherboard or ressistors gave up.everything else is working).
all the tech guy could say that i have different voltages and it's not the usb flex cable.
trying app called voltage control but i dont relly know what setting to use...
i think going to samsung service cetner is my only option...they just gonna tear a hollle in my pocket
your case is a bit complicated. guess service center is the best option for now. normally the phone got voltage limitation which will control the amount of voltage input so you don't fry your phone.
charging problem on s2 I9100
Hello everyone
i'm Cellular Technician
I have a charging problem on s2 I9100
It shows that the phone is chargeing
But he dosen't charge the battery
1. I switched the capacitor & Q500 U 504
2. All resistors Vlade U504
3. I changed U503
4. I changed MAX8997
it's still the same problem
someone hav an idea?
I think it started when I spring cleaned the inside of my desktop system unit and accidentally plugged the front usb 2.0 connector (my pc is very old) to the motherboard in reverse. I didn't recognize it until I tried charging my phone through the front usb but my phone didn't charged at all and it suddenly got very hot instead.
After that, my phone won't charge through wall or usb anymore. It only displays that the phone is charging but the battery percentage is not really increasing. I already tried replacing the battery and also tried using a different wall charger and it's still the same. For now, I've been using an external battery charger since it's my only choice and I can't afford to buy a new phone.
Can somebody help me identify what parts were damaged and I need to replace in order to fix the problem? Do I need to buy an entire board replacement just to fix this?
BTW, I'm using i9100 Intl.
Thanks in advance.
Replace USB board/port; quick/easy/cheap (<US$15) to do yourself. KeithRoss39 has a guide in General which will enable you to get it done; there's a link to it in Hopper8's Odin Troubleshooting guide stickied in General if you can't find it with a search.
MistahBungle said:
Replace USB board/port; quick/easy/cheap (<US$15) to do yourself. KeithRoss39 has a guide in General which will enable you to get it done; there's a link to it in Hopper8's Odin Troubleshooting guide stickied in General if you can't find it with a search.
Click to expand...
Click to collapse
Thanks for the response.
Are you sure it's only the USB board/port that I need to replace? btw, file transfer is perfectly working, charging is the only problem.
USB board malfunction has become a common fault with this phone (and to be honest, all Samsung phones). The board rarely dies completely all of a sudden, almost always shows a couple of faults but works OK in other ways.
Fairly sure this will fix your problem, and given how cheap it is, you might as well try it before you start spending serious money taking it to a service centre or local mobile repair shop. If that's not the problem, it's likely something else on the motherboard but as to exactly what, that's impossible to say without the phone in front of us.
Replace the USB board & see, given you've tried different batteries & charges, it points to the board/port.
The fact that your phone is functioning normally when you insert an externally (fully) charged battery would indicate that the problem isn't with the motherboard.
The USB charger/port board is connected to the motherboard and is pretty much the only part of the phone that separates the motherboard from the charger. As @MistahBungle says, everything points to that board being faulty, and replacing it really does cost pocket change and is something that is relatively easy to do.......
BTW....here is a link to the guide that mb mentioned....
http://forum.xda-developers.com/showthread.php?t=2335961
Make sure you read the first post in full before you begin....
Sent from my Markox powered KitKatted S2
Thank you. I'll give it a shot.
hi
my samsung galaxy s2 i9100 turn off when i disconnect charger howerver it is 97% charged
it boots to recovery without turning off, i can restore or install roms without the charger connected
but when i boot to android it turn off, i needs to be charger connected to boot to android
any help?!
Probably the USB board, this is probably the most common fault with this phone these days (apart from bozos bricking their phones). Given how cheap & easy it is to replace, I'd be doing that. KeithRoss39 has a guide in General (search for 'replacing USB charger board') which has all the info you need to get it done.
MistahBungle said:
Probably the USB board, this is probably the most common fault with this phone these days (apart from bozos bricking their phones). Given how cheap & easy it is to replace, I'd be doing that. KeithRoss39 has a guide in General (search for 'replacing USB charger board') which has all the info you need to get it done.
Click to expand...
Click to collapse
what about the fact that i can boot to recovery and flash firmware from sd with the device disconnceted
it only turns off when booting to android disconnected
thanks
battery
I found it was the battery
Replaced battery and everything is fine
My wifes S2 will no longer take a charge. I have tried buying a new battery and tested a variety of cables and chargers, nothing has worked so i am thinknig i need to replace the usb port. I have watched a few guides on youtube and I am ok with the process of replacing the part. Iam posting to check the importance of revision/ part numbers, My wifes part is a GT-19100 REV 2.2 R.B74 Do i need to replace it with exactly the same part?
The guide you need is KeithRoss39's guide in General (not stickied; search for 'replacing USB charger board' or do an advanced search on his username). The definitive guide to doing this on here (and probably anywhere else), has the info you need and some.
Whenever i connect my phone with USB to PC (windows 10) , it first alert as connected and then again for disconnected and then again connect and disconnect again and again. SO i am not able to transfer any data as MTP/Mass storage mode doesn't work as PC finally doesn't recognize it .
It's not Software problem It's Hardware one. So all solution related to flashing new ROM /factory reset didn't worked.
Already replaced USB cable and tried on different PC with same results even with correct drivers installed.
So it's fault in USB port , so swapped with friend's Galaxy S2 USB Board completely and again same problem.
I tried when i dissembled it but then there was no GSM network and same usb problem. assembled it back , GSM connection came but again same USB problem.
Though it charges but doesn't connect and shows properly on device manager also. Also sometimes it does detect AC charger as USB , then i disconnect and connect again , then it shows normal AC charger connected.
What's the real problem as even replacement USB board also giving same problem ? Is it problem with motherboard ?
HELP , it's very irritating.
Probably not the motherboard....My guess is the wrong version of the usb board.....There are 4 different 'revisions' of this board for the international i9100.
My guess is you brought the wrong one.
See this thread for details......
http://forum.xda-developers.com/showthread.php?t=2335961
http://i.imgur.com/rVnFwJM.jpg
keithross39 said:
Probably not the motherboard....My guess is the wrong version of the usb board.....There are 4 different 'revisions' of this board for the international i9100.
My guess is you brought the wrong one.
See this thread for details......
http://forum.xda-developers.com/showthread.php?t=2335961
http://i.imgur.com/rVnFwJM.jpg
Click to expand...
Click to collapse
So are you sure it's just 100% USB problem not motherboard ? if yes then i can get it replaced by Local repair shop in less than INR.400 ($5.97) where he will make me sure it works well.
Sounds like a nice deal right ?
EDIT- I just checked the both my old board and the replacement board from my friend's S2 are same Rev no. 2.3 .
But still same issue though his phone might have USB problem.
Can you make sure it's just the USB board problem and motherboard has no role in it. ? so that i can just get the board replaced without any tension ?
My 'gut instinct' is still telling me that it's the usb connector........
IMO, this type of connector is pathetically fragile and simply cannot withstand repeated connection/disconnection over long periods of time. I have owned a number of devices that rely on a micro USB port, and on over 50% of them, either the port or the plug on the end of the supplied charger/connection lead has failed (and I treat my devices with care).
I have never heard of a motherboard causing these types of issues and I've been active on the S2 forums for nearly 4 years, so I've seen a *lot* of posts....having said that, it can't be entirely ruled out....The S2 is now 5 flagship devices out of date, and I guess that those devices that remain in service will start to exhibit new faults that only age can reveal.....
It's up to you if you want to replace the usb board, but bearing in mind the relatively inexpensive cost of the part (compared to the cost of the motherboard), it's as good a place to start diagnosing the issue as any....it's what I'd be doing if i were in your place......
http://i.imgur.com/rVnFwJM.jpg
keithross39 said:
My 'gut instinct' is still telling me that it's the usb connector........
IMO, this type of connector is pathetically fragile and simply cannot withstand repeated connection/disconnection over long periods of time. I have owned a number of devices that rely on a micro USB port, and on over 50% of them, either the port or the plug on the end of the supplied charger/connection lead has failed (and I treat my devices with care).
I have never heard of a motherboard causing these types of issues and I've been active on the S2 forums for nearly 4 years, so I've seen a *lot* of posts....having said that, it can't be entirely ruled out....The S2 is now 5 flagship devices out of date, and I guess that those devices that remain in service will start to exhibit new faults that only age can reveal.....
It's up to you if you want to replace the usb board, but bearing in mind the relatively inexpensive cost of the part (compared to the cost of the motherboard), it's as good a place to start diagnosing the issue as any....it's what I'd be doing if i were in your place......
http://i.imgur.com/rVnFwJM.jpg
Click to expand...
Click to collapse
Thanks , will get the USB board replaced and will let you know how that goes ..
actually i have the same issue
i replaced usb board two times and that changed nothing (one was a new replacement, second that i use now it's an used original board )
still can't use my i9100 with pc
most things i can manage without a pc but still... sometimes it would be easier