iphone 5s drains battery very fast - GSM-Forum

Mobajer · 04-07-2015, 03:20

Hello, i have not water damaged iphone 5s which drains battery from 100% to 0% in 24hours in stand by mode.

i have changed u2 chip, but it acts same. any ideas?

i have made some research and compared with correct i5s logic board.

when powered from power supply, correct pcb in stand by mode takes 3 mA current and it doesnt vary.

then on faulty pcb it in stand by mode varies: 3mA <--> 70mA <--> 160mA and again 3mA and changes in such cycle .

kaptanci · 04-07-2015, 20:38

Did you try restore?

Mobajer · 04-07-2015, 22:10

i have tried software at first, then battery, charging flex, u2 chip. but phone still acts as possessed. 3mA <--> 70mA <--> 160mA and repeats.

i have 2 such phones same acting. i believe some who should also be faced with such fault.

Mobajer · 04-08-2015, 20:36

I also have other i5s which was water damaged, i have carefully cleaned it, changed all corroded resistors, ics. pcbs dont show any shorting.

when try to turn on with power supply it takes 45mA and dont start. any ideas?

kaptanci · 04-08-2015, 22:45

i have also recently many 5s same problem. one of them repaired by just software. other phones i had to give back to customers they say they dont want to wait. i changed also battery etc. but was still same. it was no dropped no water etc.

fromdesert · 04-09-2015, 04:36

I have one iphone 5s same yours, any solution

mxkey lover · 04-09-2015, 12:36

replace u2 ic ( tristar )

Mobajer · 04-09-2015, 17:45

i have 2 same acting pcbs, have changed u2 chips for both. but no changes, still fast drains battery.

i think would be great to have thermovisor and see what place heats in that circle.

Mobajer · 05-01-2015, 20:17

Hello, i have made 2 videos. please look, 1 one is of faulty pcb and second one is of correctly working pcb.

1 https://www.youtube.com/watch?v=KQO9...ture=*********

2 https://www.youtube.com/watch?v=v8-oHzLd4Hw

please advice, waiting for replies from genuine repairers who had this problem and solved. software ok, charging flex ok, battery ok, u2 chip from working pcb, still same

psytr0nic · 05-01-2015, 23:13

when u touch the pcb , nothing is heating ?

Mobajer · 05-02-2015, 18:23

cpu is hotter then normally, but it can be as result not as cause.

pcb is clean no water damage.

KE6SOLTI · 12-23-2015, 06:48

i have same problam.

http://forum.gsmhosting.com/vbb/f631.../#post11495515

04-07-2015, 03:20	#1 (permalink)
Mobajer Freak Poster Join Date: Apr 2006 Posts: 161 Member: 254719 Status: Offline Thanks Meter: 12	iphone 5s drains battery very fast Hello, i have not water damaged iphone 5s which drains battery from 100% to 0% in 24hours in stand by mode. i have changed u2 chip, but it acts same. any ideas? i have made some research and compared with correct i5s logic board. when powered from power supply, correct pcb in stand by mode takes 3 mA current and it doesnt vary. then on faulty pcb it in stand by mode varies: 3mA <--> 70mA <--> 160mA and again 3mA and changes in such cycle .

04-07-2015, 20:38	#2 (permalink)
kaptanci Freak Poster Join Date: Nov 2014 Location: Germany Posts: 265 Member: 2289832 Status: Offline Thanks Meter: 48	Did you try restore?

04-07-2015, 22:10	#3 (permalink)
Mobajer Freak Poster Join Date: Apr 2006 Posts: 161 Member: 254719 Status: Offline Thanks Meter: 12	i have tried software at first, then battery, charging flex, u2 chip. but phone still acts as possessed. 3mA <--> 70mA <--> 160mA and repeats. i have 2 such phones same acting. i believe some who should also be faced with such fault.

04-08-2015, 20:36	#4 (permalink)
Mobajer Freak Poster Join Date: Apr 2006 Posts: 161 Member: 254719 Status: Offline Thanks Meter: 12	I also have other i5s which was water damaged, i have carefully cleaned it, changed all corroded resistors, ics. pcbs dont show any shorting. when try to turn on with power supply it takes 45mA and dont start. any ideas?

04-08-2015, 22:45	#5 (permalink)
kaptanci Freak Poster Join Date: Nov 2014 Location: Germany Posts: 265 Member: 2289832 Status: Offline Thanks Meter: 48	i have also recently many 5s same problem. one of them repaired by just software. other phones i had to give back to customers they say they dont want to wait. i changed also battery etc. but was still same. it was no dropped no water etc.

04-09-2015, 04:36	#6 (permalink)
fromdesert Freak Poster Join Date: Aug 2004 Location: vietnam Age: 45 Posts: 196 Member: 79715 Status: Offline Thanks Meter: 8	I have one iphone 5s same yours, any solution

04-09-2015, 12:36	#7 (permalink)
mxkey lover Freak Poster Join Date: Jan 2010 Location: iraq Posts: 172 Member: 1212320 Status: Offline Thanks Meter: 46	replace u2 ic ( tristar )

04-09-2015, 17:45	#8 (permalink)
Mobajer Freak Poster Join Date: Apr 2006 Posts: 161 Member: 254719 Status: Offline Thanks Meter: 12	i have 2 same acting pcbs, have changed u2 chips for both. but no changes, still fast drains battery. i think would be great to have thermovisor and see what place heats in that circle.

05-01-2015, 20:17	#9 (permalink)
Mobajer Freak Poster Join Date: Apr 2006 Posts: 161 Member: 254719 Status: Offline Thanks Meter: 12	Hello, i have made 2 videos. please look, 1 one is of faulty pcb and second one is of correctly working pcb. 1 https://www.youtube.com/watch?v=KQO9...ture=********* 2 https://www.youtube.com/watch?v=v8-oHzLd4Hw please advice, waiting for replies from genuine repairers who had this problem and solved. software ok, charging flex ok, battery ok, u2 chip from working pcb, still same

05-01-2015, 23:13	#10 (permalink)
psytr0nic No Life Poster Join Date: Oct 2010 Location: Abidjan Age: 38 Posts: 2,478 Member: 1418143 Status: Offline Thanks Meter: 353	when u touch the pcb , nothing is heating ?

05-02-2015, 18:23	#11 (permalink)
Mobajer Freak Poster Join Date: Apr 2006 Posts: 161 Member: 254719 Status: Offline Thanks Meter: 12	cpu is hotter then normally, but it can be as result not as cause. pcb is clean no water damage.

12-23-2015, 06:48	#12 (permalink)
KE6SOLTI No Life Poster Join Date: Mar 2013 Location: Nepal Age: 41 Posts: 728 Member: 1906979 Status: Offline Sonork: 100.1681049 Thanks Meter: 162	i have same problam. http://forum.gsmhosting.com/vbb/f631.../#post11495515