i9100 dead recurrent problem - GSM-Forum

doiiido · 05-21-2016, 18:33

Hi, I have about 5 i9100 mainboards with the same problem.
The way to reproduce the issue is put a low charged battery in it, turn it on and, while it is processing something( a incomming call or a game for example) and the battery is about to be 0%, connect it to a charger.
Comparing them to a working board shows that the only diff when not powered on is that the bad ones have 0v on capacitor c504.
I´d had already replaced all CIs on the board, except from the exynos and the memory.

As I said, ive already tested the u501 on a working board and resoldered it back,the 2.0v on the c504 came from a5 and b5 pins on the u501.

It´s not the u501, but i got no clue on the issue.

Do you have any clue on this issue?

Att,
Lincoln.

05-21-2016, 18:33	#1 (permalink)
doiiido Junior Member Join Date: Mar 2016 Posts: 4 Member: 2550091 Status: Offline Thanks Meter: 0	i9100 dead recurrent problem Hi, I have about 5 i9100 mainboards with the same problem. The way to reproduce the issue is put a low charged battery in it, turn it on and, while it is processing something( a incomming call or a game for example) and the battery is about to be 0%, connect it to a charger. Comparing them to a working board shows that the only diff when not powered on is that the bad ones have 0v on capacitor c504. I´d had already replaced all CIs on the board, except from the exynos and the memory. As I said, ive already tested the u501 on a working board and resoldered it back,the 2.0v on the c504 came from a5 and b5 pins on the u501. It´s not the u501, but i got no clue on the issue. Do you have any clue on this issue? Att, Lincoln.