820-00239 Touchbar. Liquid damaged.

[ALB-Repairs]

Board looked very clean other than the touchbar connector (J4402 now removed due to pin 20 and 22 being corroded/shorted.

It has all power rails, CPU gets warm, with no Post, No chime, no display.
Really stuck. anything i should check?

Thanks

 

[dukefawks]

These do not chime, so very possible it is just working without display. Connect external LCD to check first. Or connect a USB mouse and see if light comes on. Yes you will need to get some USB-C adapters and yes just get the official Apple ones so we are not wasting time with incompatible Chinese junk.

 

[ALB-Repairs]

These do not chime, so very possible it is just working without display. Connect external LCD to check first. Or connect a USB mouse and see if light comes on. Yes you will need to get some USB-C adapters and yes just get the official Apple ones so we are not wasting time with incompatible Chinese junk.

I will check external. But i get no keyboard backlight as just assumed it wasnt doing anything.
Ive tested the screen/ screen cable with another board, and they are good. but i will rebuild the system and see if i get anything on an external.

Already have all the correct adapters for USB-C /USB and external displays.