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[Q] Problem with battery?

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By Lunatiic, Senior Member on 30th August 2014, 05:33 AM
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I've been away from the Xperia S forums for about 4 months now, since my Xperia S died. I've been using a Samsung Galaxy S II, but i'm pretty tired of it, don't like amoled screens, battery issues, constant reboots, radio problems and it goes on and on.. SO I want to try to revive my Xperia S.. Here is what happened:

4 Months ago, I had just finished flasing a Paranoid Android ROM (4.4.2 KK) and was setting up the phone, had just finished installing some apps and was testing some CPU Governors, I/O Schedulers and things like that, running AnTuTu and Quadrant benchmarks. In the middle of an AnTuTu bench, the phone just shut down (with about 50% battery left) and woudn't turn on again. When connecting the charger, the LED woudn't light up, the phone wouldn't vibrate, Vol Up + Power wasn't working, coudn't enter recovery/download modes. Hard bricked. So I opened up the phone and removed the battery, tryed plugging in again and nothing, so I left the battery outside the phone for a couple of days. After that, I made a quick "short circuit" with the batter, about 1/2 seconds, and plugged it back in, connected the charger and the phone came back to life. Now I could enter fastboot mode, so I re-flashed the stock .96 using Flash Tool, re-rooted, and re-flashed a newer build of Paranoid Android and everything was working fine again. I managed to backup all my photos and documents, and left the phone charging overnight while downloading some apps from the Play Store. When I woke up: dead again, but this time it's different. When I connect the charger the RED LED lights up, but it turns off after a couple of minutes. The rest is exactly the same: can't enter recovery, can't boot, can't fastboot, Vol Up + Power isn't working.. So I took off the battery and tryed a short circuit again, but this time nothing happend.. The first time the the cables heated up quickly and this time nothing happened. So I don't know what exactly is going on. Is the battery completely dead (2 years old phone)? Or is my device unable, somehow, to charge the battery? If there is no charge at all, the short circuit won't work.

Anyone with any experience or any guess? I'm searching for a new battery so I can test it but it's kind of expesive here, about 60USD. I can't stand the SGS2 anylonger, and I'm not buying any phone until the Snapdragon 810 shows up.
 
 
23rd February 2015, 05:29 PM |#2  
ChriMo's Avatar
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I'm having a similar problem: After installing uCyan everything except the battery drain (irrational jumps in the curve) seemed to work. Then at some point the phone died and now is in a charging (red light, some minutes), bootup loop. Sometimes it reached the sys to then instantly die again. I was able to get into TWRP when I fortunately saw the next bootup. But the battery is too low to get stock or any other recovery back. So everything seems broken. I have tried with two USB cables. The phone/battery is over 2 years old.
If any further actions could help, please let me know. Would also love to revive this phone.
24th February 2015, 07:38 AM |#3  
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Quote:
Originally Posted by ChriMo

I'm having a similar problem: After installing uCyan everything except the battery drain (irrational jumps in the curve) seemed to work. Then at some point the phone died and now is in a charging (red light, some minutes), bootup loop. Sometimes it reached the sys to then instantly die again. I was able to get into TWRP when I fortunately saw the next bootup. But the battery is too low to get stock or any other recovery back. So everything seems broken. I have tried with two USB cables. The phone/battery is over 2 years old.
If any further actions could help, please let me know. Would also love to revive this phone.

try the rubber band trick from here.
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24th February 2015, 11:18 AM |#4  
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Ok I will try rubber band trick then. I think I already did it two times. I would have liked to avoid flashing the stock.ftf back and then doing again the unlocking, rooting and custom ROM flashing.
24th February 2015, 04:06 PM |#5  
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Quote:
Originally Posted by ChriMo

Ok I will try rubber band trick then. I think I already did it two times. I would have liked to avoid flashing the stock.ftf back and then doing again the unlocking, rooting and custom ROM flashing.

I thought You hadn't done that. You don't need to unlock bootloader again even if You flash stock ftf. And if You intent to flash a Kitkat or Lollipop based ROM, then You can simply skip rooting and all and follow the method from here.
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