A2159 820-01598 20V 0Amp on Battery.

[ronaldo]

Hi. I need help, please.
I got this MacBook Pro 13-inch, 2019 - A2159 in to replace the Screen. I replaced it and everything was fine.
The customer asked to check his charger as it sometimes stop working (Original charger).
First I have cheeked with my original charger and it works fine on both ports.
I took his charger plugged on one port and it is fine them plugged on the second port next to the trackpad and nothing. Back to the other port and nothing. Basically somehow his charger damaged something on the board.

I replaced both USB-C controllers and it now tuns on with the battery plugged in. Goes to 20V - 0A.
Standalone it gets 5V 0.25A and doesn't work.


PPBUS_G3H - 12.3 V (11.87 V with battery)
PP3V3_G3H_RTC - 3.3 V

PP1V1_SLPS2R - 1.1 V
PP1V8_SLPS2R - 1.8 V
PP0V8_SLPS2R - 0.8 V
PP1V25_SLPS2R_SMC_AVREF - 1.24 V
PP1V8_SLPS2R - 1.8 V
PP1V8_SLPS2R_SOC_LPADC_RC - 1.8 V

PP1V2_AWAKE - 1.2 V
PP1V8_AWAKE - 1.8 V
PP3V3_AWAKE - 3.3 V

 

[2informaticos]

Did you get CD3217 chips from same model donor board?
Maintained their position on the board?

Try reflashing TBT ROM; make backup first.

 

[ronaldo]

I just fixed. Before I used some old CD3216 that I bought from China.
I replaced from a donor board and it works fine.
Thanks.

That still confuse me when replacing these controllers. I tough just the M1 needs to come from same board.
Is there any way we can buy these controllers new instead of getting from donor boards?
China is always crap ICs.

 

[ronaldo]

I read before that if replace at least the master with another master, then we can replace the second IC with any other new or from any other position from a donor. But I never tried.

 

[ronaldo]

Like last week I fixed one A1990, which has all CD3217 faulty. I replace then randomly with china ic and from a donor board. I had to replace the TBT ROM ic as it was dead. Also both TBT controller and it worked.
Weird that all CD3217 came from different places.