iPhone 7 no power repair

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iPhone 7

Released September 16, 2016. Model 1660, 1778 Available as GSM or CDMA / 32, 128 or 256 GB / Rose gold, gold, silver, black, and jet black.

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steven smith @stevensmit43638

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Posted: Apr 6, 2019

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iPhone 7 no power repair

Got a iPhone 7 no power at all. its Not detected in iTunes.

if I try boot phone on usb meter It goes straight to 0.41 on usb meter.

If I remove battery and try boot using dcps, I get 0.02 amp current draw.

No vcc main shorts. checked voltage on battery terminal with usb connected i get 3.75v so im pretty sure tristar is ok.

tryed diff battery and dock connector.

tryed diffrent tigris and removed q2101 and jumped still the same on usb meter.

1.8v always present

Vcc main 4.2v present

pp_vcc_batt 4.2v present

PP_VCC_MAIN present

PP_VCC_BATT PRESENT

PP3V0_NAND, present

PP0V9_NAND present

PP1V8 present

PP1V8_SDRAM present

PP3V0_TRISTAR_ANT_PROX present

5V0_usb 4.73v present

PP_CPU 0.75V

PP_VAR_SOC .804

Any fellow techs help very much appreciated.

Answer this question I have this problem too

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4 Comments

Did you break or snap a wire or charger tell me more in the comments steven Smith (:

Apr 6, 2019 by George

I am facing the same issue :)

Jul 22, 2019 by Gomes

@Steven smith I'd like to know the answer to this as well? Did the car charger cause the problem? and did you find out how to fix it

Sep 13, 2019 by Uber Babsen

I got 2 of these this week, a regular 7 and a 7 plus. Exact symptoms. I did try replacing tristar and first time I tried to power it on the bench it seemed like it was booting based off of power draw from the power supply but after turning off and hooking a screen up to it, it went back to the previous state.

Oct 9, 2019 by joel rakich

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1 Answer

Did you break or snap a wire or charger tell me more in the comments steven Smith (: — George
@Steven smith I'd like to know the answer to this as well? Did the car charger cause the problem? and did you find out how to fix it — Uber Babsen
I got 2 of these this week, a regular 7 and a 7 plus. Exact symptoms. I did try replacing tristar and first time I tried to power it on the bench it seemed like it was booting based off of power draw from the power supply but after turning off and hooking a screen up to it, it went back to the previous state. — joel rakich