820-01700 5V 0.29A (liquid damage)

[ajdoc]

Small liquid damage on C9092, U8600, U9580.
Three USB C ports have 5V 0.28A
One have 5V 0.02A in cycles/loop.

Found faulty DB529 but still same issue.
Replaced CD3217 (UB300) and still the same issue.

Any idea?
When ccharger connected 'OK' ports only T2 get warm.

PP2V5_NAND_SSD0/1 not shorted.

 

[2informaticos]

"Replaced CD3217 (UB300)"
Same UB300 from donor board, exact model?

 

[ajdoc]

Not from exact model, waiting for delivery with donors.
Will update as soon will use the same UB300 from the same logic board.

 

[2informaticos]

Don't waste time with incorrect replacements...

 

[ajdoc]

Used correct CD3217 and the issue was the same.
Flashed UB090 and got 20V and 0.10V

L6961 was a little warm and there was 0.061 in diode mode.
Removed L6961 and had correct diode mode valus on both pads.
Soldered new L6961 and still have low diode mode, its not getting warm and have correct voltage 3.38V

Any idea?

 

[2informaticos]

Is the machine recognized into DFU mode?

 

[ajdoc]

Yes, I used SWK003.
Tried to revive via Apple Configurator but just freeze.
Tried via Finder and is stuck at "Waiting for Mac..." and then got error " Mac cant be updated, error 4042 which is Timeout Error.

 

[2informaticos]

If there is no data to preserve, try restore option.

 

[ajdoc]

Finally have "ok" from a client to do restore and same issue "Timeout Error"

 

[2informaticos]

I bet for NANDs problems...