battery voltage drops 0.1v per second

motorhead_biker · #1 (**permalink**) 10-03-2009, 08:05 PM

Hi i have a 3G and a 3GS with one common issue...

When ever I mount the boardd on the battery, the battery vlotage drops by .1v every second and finally goes to 0v... in this process the board gets really heated up... i only see an apple logo... this is the case with my 3GS too.. any solution???

c.e.p · #2 (**permalink**) 10-04-2009, 05:18 AM

do you have any after market accessories or chargers which you use on both phones? Sometimes they can ruin your battery..

motorhead_biker · #3 (**permalink**) 10-04-2009, 09:13 AM

Noes... nothing... just the phone..

motorhead_biker · #4 (**permalink**) 10-04-2009, 04:07 PM

I found the problem... but i need advice frm a hardware expert....

The "Dialog semiconductor" IC is the power manager for application processor in 3GS... there are 3 components (Prolly resistors) (idk what they are),,, which gets 3.7v(from battery)... but the output of one of these component mixes ground with it...which becomes the input to the IC... as a result C gets heated up and finally ends in draining the battery... any solution?? pls?

crispain · #5 (**permalink**) 10-14-2009, 09:37 PM

Normally, this is a problem with de PMU (APPLE 338S0533), and to solve it you need to replace the PMU from the logic board it self. It's BGA IC type, so it's a professional task.

Cheers!

*slavko999* · #6 (**permalink**) 10-26-2009, 10:39 AM

I have same problem. Have You find to buy that IC?
I think that original IC can be replaced with DIALOG DA9052.
Maybe anyone know where I can get one of these IC?

motorhead_biker · #7 (**permalink**) 11-14-2009, 07:05 PM

Tried mailing them asking for sample IC... didnt get any reply yet.. still waiting.

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