iphone 5s power ic gets hot after water damage - GSM-Forum

GadgetFriendly · 09-14-2014, 05:02

Customer brought in an iPhone 5s from sprint after being lightly dipped in water. phone doesn't power on what so ever, took a IR temp reader to the power ic U7 and i clocked it around 203 degrees F , i don't want to jump right into replacing the PMU, any thing i can check and diagnose to stop if from over heating and potentially power this bad boy back up?? also L9 resistor looks discolored and maybe slightly shifted but nothing crazy! any ideas post here !!! thanks in advance

ameerali19 · 09-14-2014, 09:45

first check whether mother board is short or not ???

and also try to find out is there any other spare (capasitor , resistor )short ...

if not try to change the power ic , by cleaning the gum carefully,
patiently

regards

iyass · 07-24-2015, 00:04

i have the same problem ,
the pcb is short on battery connection,
what can i do ?
thanks in advacne

kaptanci · 07-24-2015, 20:25

U have to change all corroded/burned caps if u want a proper work. Dont remove pmic short is not there.

09-14-2014, 05:02	#1 (permalink)
GadgetFriendly Crazy Poster Join Date: Jul 2014 Posts: 50 Member: 2230661 Status: Offline Thanks Meter: 2	iphone 5s power ic gets hot after water damage Customer brought in an iPhone 5s from sprint after being lightly dipped in water. phone doesn't power on what so ever, took a IR temp reader to the power ic U7 and i clocked it around 203 degrees F , i don't want to jump right into replacing the PMU, any thing i can check and diagnose to stop if from over heating and potentially power this bad boy back up?? also L9 resistor looks discolored and maybe slightly shifted but nothing crazy! any ideas post here !!! thanks in advance

09-14-2014, 09:45	#2 (permalink)
ameerali19 No Life Poster Join Date: Oct 2008 Location: dubai Posts: 947 Member: 884639 Status: Offline Sonork: 100.1597105 Thanks Meter: 266	first check whether mother board is short or not ??? and also try to find out is there any other spare (capasitor , resistor )short ... if not try to change the power ic , by cleaning the gum carefully, patiently regards

07-24-2015, 00:04	#3 (permalink)
iyass No Life Poster Join Date: Mar 2003 Location: USA Posts: 629 Member: 23534 Status: Offline Thanks Meter: 17	i have the same problem , the pcb is short on battery connection, what can i do ? thanks in advacne

07-24-2015, 20:25	#4 (permalink)
kaptanci Freak Poster Join Date: Nov 2014 Location: Germany Posts: 265 Member: 2289832 Status: Offline Thanks Meter: 48	U have to change all corroded/burned caps if u want a proper work. Dont remove pmic short is not there.