Iphone 5s short on pp vcc main. - GSM-Forum

kaptanci · 08-05-2015, 21:35

Hello
I received an iphone 5s with shorted vcc main line. Device has no waterdamage. Q4 getting hot. I removed all caps on this line one by one. Removed q4, u3 display pmu and at last pm ic. But short is still there. What do u think i shoud check to gond shorted component.

jackie8 · 08-15-2015, 18:00

same problem here. No Waterdamage still short vcc main, feels like i took half the board apart without finding the short.

jackie8 · 08-15-2015, 18:28

I found the short. It was the Wifi Module shorted VCC_Main line. To bad i lifted half the pads. I need a cnc maschine

kaptanci · 08-15-2015, 21:40

Thanks for sharing. It is too late i gave it back to customer. I think u need another hot air station. It is important to use big noozle and high airflow for big ics. I never used a cnc. i not know if it is really useful why shoud i damage the ic. Anyway good luck with soldering back all removed components.

08-05-2015, 21:35	#1 (permalink)
kaptanci Freak Poster Join Date: Nov 2014 Location: Germany Posts: 265 Member: 2289832 Status: Offline Thanks Meter: 48	Iphone 5s short on pp vcc main. Hello I received an iphone 5s with shorted vcc main line. Device has no waterdamage. Q4 getting hot. I removed all caps on this line one by one. Removed q4, u3 display pmu and at last pm ic. But short is still there. What do u think i shoud check to gond shorted component.

08-15-2015, 21:40	#4 (permalink)
kaptanci Freak Poster Join Date: Nov 2014 Location: Germany Posts: 265 Member: 2289832 Status: Offline Thanks Meter: 48	Thanks for sharing. It is too late i gave it back to customer. I think u need another hot air station. It is important to use big noozle and high airflow for big ics. I never used a cnc. i not know if it is really useful why shoud i damage the ic. Anyway good luck with soldering back all removed components. Last edited by kaptanci; 08-15-2015 at 21:46.

08-15-2015, 18:00	#2 (permalink)
jackie8 Freak Poster Join Date: Jan 2014 Location: Germany Posts: 244 Member: 2105007 Status: Offline Thanks Meter: 40	same problem here. No Waterdamage still short vcc main, feels like i took half the board apart without finding the short.

08-15-2015, 18:28	#3 (permalink)
jackie8 Freak Poster Join Date: Jan 2014 Location: Germany Posts: 244 Member: 2105007 Status: Offline Thanks Meter: 40	I found the short. It was the Wifi Module shorted VCC_Main line. To bad i lifted half the pads. I need a cnc maschine