iPhone 6s dead 80ma - GSM-Forum

Joe025 · 12-30-2017, 22:27

I got a iPhone 6s with water damage. after perfect clean the board i press power button. the current gets up to 120ma after and go down to 80ma and stay there. Nothing gets warm.
where should I search first.
Thanks a lot for your help

The Magpies · 12-31-2017, 22:52

Always start the check for short on VCC Main and VBat line

mustafa12 · 12-31-2017, 23:16

hello
i have iphone 6s damage
the current 0-20-80ma and return

Joe025 · 01-01-2018, 21:50

VCC Main no shot and ok. VBat at TP02/TP03 is ok.

minho · 01-02-2018, 22:01

Quote:

Originally Posted by Joe025

VCC Main no shot and ok. VBat at TP02/TP03 is ok.

Now that you have checked the main power lines, you need to check ALL of the outputs from the PMIC and then the BB_PMU. Look for shorts and work your way from there.

Hawy56oo6 · 01-03-2018, 01:37

I had iPhone like this the water damage under chistnut I replaced it and backlight driver

Try to remove those drivers and try to boot this iPhone

Hope to help

Joe025 · 01-03-2018, 02:31

Thank you for your reply. I will check the Voltages and Post it here.

Joe025 · 01-03-2018, 21:17

I checked Voltage...
I got no PP_GPU an at C2012 -C2021 12 Ohm to Grund.

minho · 01-03-2018, 23:34

Quote:

Originally Posted by Joe025

I checked Voltage...
I got no PP_GPU an at C2012 -C2021 12 Ohm to Grund.

That seems okay. You cannot measure the voltage of PP_GPU unless the screen is "on". That means plug the logic board to a Lightning cable and then check the voltage.

Joe025 · 01-05-2018, 11:31

Ok I got the Voltage from the PMIC:

PP_CPU 1,8V
PP_GPU 0V
PP_SOC 0,7 V
PP1V8_SDRAM 1,8V
PP1V1_SDRAM 1,1V
PP3V3_USB 3,3V
PP1V8_VA 1,8v
PP3V0_TRISTAR 2,9V
PP0V8_OWL 0,8V
PP3V0_NAND 3,0V
PP3V3_ACC 0V !!!
PP3V0_PROX_ALS 2,9V
PMU_LDO8 0V !!!
PP2V85_CAM_AVDD_PMU 0V!!!
PP0V9_NAND 0,9V
PP3V0_PROX_IRLED 3,4 V
PP1V8_ALWAYS 1,8V
PP3V0_MESA 3,0V
PP1V2 1,2V
PP1V8_MESA 1,8V

minho · 01-05-2018, 14:42

Quote:

Originally Posted by Joe025

Ok I got the Voltage from the PMIC:

PP_CPU 1,8V
PP_GPU 0V
PP_SOC 0,7 V
PP1V8_SDRAM 1,8V
PP1V1_SDRAM 1,1V
PP3V3_USB 3,3V
PP1V8_VA 1,8v
PP3V0_TRISTAR 2,9V
PP0V8_OWL 0,8V
PP3V0_NAND 3,0V
PP3V3_ACC 0V !!!
PP3V0_PROX_ALS 2,9V
PMU_LDO8 0V !!!
PP2V85_CAM_AVDD_PMU 0V!!!
PP0V9_NAND 0,9V
PP3V0_PROX_IRLED 3,4 V
PP1V8_ALWAYS 1,8V
PP3V0_MESA 3,0V
PP1V2 1,2V
PP1V8_MESA 1,8V

You don't need to worry about PP3V3_ACC, it's only on for a brief moment at the very beginning. However you need to check PMU_LDO8 & PP2V85 for shorts.

Joe025 · 01-05-2018, 15:40

ok... but are this Voltages ( PMU_LDO8 & PP2V85) necessary for boot up the board?

minho · 01-05-2018, 16:01

Quote:

Originally Posted by Joe025

ok... but are this Voltages ( PMU_LDO8 & PP2V85) necessary for boot up the board?

I'm not sure about LDO8, it doesn't seem to go anywhere according to the schematic. As for the 2V85, it's not necessary. I would also check the U_PMU_RF to see if the voltages are present.

Joe025 · 01-09-2018, 15:42

Do you mean this voltages at u_PMU_RF

Joe025 · 02-22-2018, 08:54

Now i checked the Voltage at U_PMU_RF
i got no output Voltage on
C3609_RF
C3610_RF
C3611_RF
C3612_RF
C3613_RF

Now the Problem is on U_PMU_RF ?

12-30-2017, 22:27	#1 (permalink)
Joe025 Insane Poster Join Date: Jun 2013 Location: Germany Posts: 74 Member: 1959885 Status: Offline Thanks Meter: 6	iPhone 6s dead 80ma I got a iPhone 6s with water damage. after perfect clean the board i press power button. the current gets up to 120ma after and go down to 80ma and stay there. Nothing gets warm. where should I search first. Thanks a lot for your help

12-31-2017, 22:52	#2 (permalink)
The Magpies Freak Poster Join Date: Jun 2003 Location: uk Age: 49 Posts: 126 Member: 32369 Status: Offline Thanks Meter: 5	Always start the check for short on VCC Main and VBat line

12-31-2017, 23:16	#3 (permalink)
mustafa12 Insane Poster Join Date: Dec 2009 Posts: 74 Member: 1191636 Status: Offline Thanks Meter: 6	hello i have iphone 6s damage the current 0-20-80ma and return

01-01-2018, 21:50	#4 (permalink)
Joe025 Insane Poster Join Date: Jun 2013 Location: Germany Posts: 74 Member: 1959885 Status: Offline Thanks Meter: 6	VCC Main no shot and ok. VBat at TP02/TP03 is ok.

01-03-2018, 01:37	#6 (permalink)
Hawy56oo6 Insane Poster Join Date: Sep 2017 Posts: 67 Member: 2753739 Status: Offline Thanks Meter: 7	I had iPhone like this the water damage under chistnut I replaced it and backlight driver Try to remove those drivers and try to boot this iPhone Hope to help

01-03-2018, 02:31	#7 (permalink)
Joe025 Insane Poster Join Date: Jun 2013 Location: Germany Posts: 74 Member: 1959885 Status: Offline Thanks Meter: 6	Thank you for your reply. I will check the Voltages and Post it here.

01-03-2018, 21:17	#8 (permalink)
Joe025 Insane Poster Join Date: Jun 2013 Location: Germany Posts: 74 Member: 1959885 Status: Offline Thanks Meter: 6	I checked Voltage... I got no PP_GPU an at C2012 -C2021 12 Ohm to Grund.

01-05-2018, 11:31	#10 (permalink)
Joe025 Insane Poster Join Date: Jun 2013 Location: Germany Posts: 74 Member: 1959885 Status: Offline Thanks Meter: 6	Ok I got the Voltage from the PMIC: PP_CPU 1,8V PP_GPU 0V PP_SOC 0,7 V PP1V8_SDRAM 1,8V PP1V1_SDRAM 1,1V PP3V3_USB 3,3V PP1V8_VA 1,8v PP3V0_TRISTAR 2,9V PP0V8_OWL 0,8V PP3V0_NAND 3,0V PP3V3_ACC 0V !!! PP3V0_PROX_ALS 2,9V PMU_LDO8 0V !!! PP2V85_CAM_AVDD_PMU 0V!!! PP0V9_NAND 0,9V PP3V0_PROX_IRLED 3,4 V PP1V8_ALWAYS 1,8V PP3V0_MESA 3,0V PP1V2 1,2V PP1V8_MESA 1,8V

01-05-2018, 15:40	#12 (permalink)
Joe025 Insane Poster Join Date: Jun 2013 Location: Germany Posts: 74 Member: 1959885 Status: Offline Thanks Meter: 6	ok... but are this Voltages ( PMU_LDO8 & PP2V85) necessary for boot up the board?

01-09-2018, 15:42	#14 (permalink)
Joe025 Insane Poster Join Date: Jun 2013 Location: Germany Posts: 74 Member: 1959885 Status: Offline Thanks Meter: 6	Do you mean this voltages at u_PMU_RF

02-22-2018, 08:54	#15 (permalink)
Joe025 Insane Poster Join Date: Jun 2013 Location: Germany Posts: 74 Member: 1959885 Status: Offline Thanks Meter: 6	Now i checked the Voltage at U_PMU_RF i got no output Voltage on C3609_RF C3610_RF C3611_RF C3612_RF C3613_RF Now the Problem is on U_PMU_RF ?