iPhone 4 - Power problem! help needed...

[Greeny308]

My iphone 4 has a power issue.

It was originally dropped in water! was left off for 2 weeks in very warm conditions, was dried out with both the Rice method! and the silica gel method.

The problem is this, the phone will power up (have noticed i have to hold the power button down alot longer than i use to) when the screen comes on, i put it into standby (black screen by pressing power button quickly) and the phone will stay powered up all day long as normal. BUT when i want to USE the phone and the screen is lit up it will only be powered up for exactly 4 mins - then the screen dies and the iphone reboots itself. It will do this all the time unless i leave it in standby mode.

I have tried numerous restores both in restore and DFU mode, with 4.1 and 4.2.1 Firmwares. Im very aware and competent when it comes to iphone but I dont have a clue whats causing this problem! Maybe a hardware problem, but what can be wrong that will only allow me to use the iphone for 4 mins! ???

[Cowboy]

Yeah seems to me you might have fried something out id take it apart and see if you water sensor have turned red if so you can try washing the logic board with alcohol 90%+ and reassemble to see if that fixes it. If not you ip4 is donezies,

[Greeny308]

where will i find this water sensor ? cheers in advance.

[Cowboy]

There are 2 easy ones to look at in under the dock or in the head phone jack.
Also if you take off the back cover there is one covering a screw.

[Greeny308]

I found those sensor things - but none of them are red. but updated to 4.2.1 and now the power prob seems to have fixed itself!!! :-/ lol. Thanks for your help anyway!

[Cowboy]

I found those sensor things - but none of them are red. but updated to 4.2.1 and now the power prob seems to have fixed itself!!! :-/ lol. Thanks for your help anyway!

Yup no problem I guess