Help S2 battery and rebooting problem

[outlawimmortal12]

Hello everyone

My S2 has been rebooting constantly on its own and the battery would never fully charge, it would be fine and then reboot and the battery would show only 11%. I thought it may be a battery problem so I bought a brand new battery and it is still doing the same thing.

It will not fully charge, at least it shows it isn't. When it reboots the battery will show like 3% or something. When it doesn't reboot the power off/airplane mode/restart option pops up all the time.

Is this something a factory reset will fix or do I have a bigger problem?

I should also mention my carrier is not on the list of forums, I am with Appalachian Wireless and is CDMA. Thanks in advance for any help!

 

[Rukbat]

Sounds as if it may be a shorted power switch. It's not that expensive a repair - you pay for the labor. The switch itself is probably under a buck. (But please don't try fixing it yourself. I don't want to see you here asking how to fix what you broke when you replaced the switch.)

 

[outlawimmortal12]

Thanks for the help and no worries on me trying to fix it lol. So that would cause the battery to act all bonkers as well?

 

[rjdrivers]

I just replaced the USB circuit board in my S2 last week. Phone would not shut completely off unless I took out the battery. Would fully charge but would not hold a charge for more than 4 hours even just on standby. Showed the charging icon when it wasn't being charged. Told me to unplug the charger when it wasn't plugged in. Generally behaved very sluggish. Brightness level came and went, and sometimes would not go to full brightness, even when well charged. Would only turn on when the USB cord was plugged in. All very weird behavior.

You can buy the USB port circuit board on eBay for $6.00. Installation is all plugs and screws - no soldering required. You tube has plenty of videos showing how. Took me about twenty-five minutes with a small jeweler's screwdriver, a pair of tweezers and a guitar pick for tools.

Phone is now back to it's old normal self.

EDIT 8-9-14: Well, not completely normal. While the new USB board corrected all the weird behavior, I found the phone unable to do voice to text without yelling into the mic from 1 inch away, and I needed to speak louder when talking as well. Turns out the microphone on the replacement board was substandard. Also found on closer examination that it did not match my original mic in appearance. I installed a new board today with mic that matches my original exactly, and now all voice functions are back to normal. Before ordering your part, take off the back of the case and look at your USB board to make sure you get an exact match.