Galaxy s2 i9100 auto charging - GSM-Forum

saanvimobiles · 01-13-2014, 06:52

Dear friend my s2 showing auto charge when charger is not pluged.after battery inserted in mobile showing auto charge,usb not working time by time,and battery draining speedily.
Plz give me some solution
Plz
i have removed the capacitor near the charging ic but not success

saanvimobiles · 01-13-2014, 16:59

no one is there to help me

KorAll · 01-13-2014, 23:35

Quote:

Originally Posted by saanvimobiles

Dear friend my s2 showing auto charge when charger is not pluged.after battery inserted in mobile showing auto charge,usb not working time by time,and battery draining speedily.
Plz give me some solution Plz
i have removed the capacitor near the charging ic but not success

If you can't check Q500 on PCB, than trimly remove it from PCB. Check phone. Stop charging - U504 is alive, and problem in Q500 or their 2 pin way.

This is charging algorithm.

Schematics

_________________________________________________

Logic is the iron made.

I try to help for this comical salary -

KorAll · 01-14-2014, 15:09

Problem also very possible from U709, R734, R735. Clean PCB at this place. Resolder U709. There isn't be any current leakage from R735 to R734. If USB disconnected, but some voltage presence at R734 (pin #15 U709) - it mean leakage.

_________________________________________________

Logic is the iron made.

I try to help for this comical salary -

01-13-2014, 06:52	#1 (permalink)
saanvimobiles Major Poster Join Date: Mar 2013 Posts: 47 Member: 1895205 Status: Offline Sonork: 100.1627663 Thanks Meter: 5	Galaxy s2 i9100 auto charging Dear friend my s2 showing auto charge when charger is not pluged.after battery inserted in mobile showing auto charge,usb not working time by time,and battery draining speedily. Plz give me some solution Plz i have removed the capacitor near the charging ic but not success

01-13-2014, 16:59	#2 (permalink)
saanvimobiles Major Poster Join Date: Mar 2013 Posts: 47 Member: 1895205 Status: Offline Sonork: 100.1627663 Thanks Meter: 5	no one is there to help me

01-14-2014, 15:09	#4 (permalink)
KorAll Freak Poster Join Date: Dec 2011 Location: Russia, North Ural Age: 68 Posts: 263 Member: 1702061 Status: Offline Sonork: 100.1651562 Thanks Meter: 306	Problem also very possible from U709, R734, R735. Clean PCB at this place. Resolder U709. There isn't be any current leakage from R735 to R734. If USB disconnected, but some voltage presence at R734 (pin #15 U709) - it mean leakage. _________________________________________________ Logic is the iron made. I try to help for this comical salary -