820-00850-a 20v 0.000a 12.67 ppbus

[kjchatman1]

this board had a spill and i thoroughly cleaned it. it show 20v 0.000a on the amp meter. the ppbus is 12.67v

 

[2informaticos]

Any other relevant voltage from this MLB?
Like G3S, AWAKE, SLPS2R...

Did you try DFU mode?

 

[kjchatman1]

it's also charging the battery. Couldn't I assume these voltages are there if the ppbus is correct?

 

[2informaticos]

Why do you bother with PPBUS_G3H if even battery is charging?
A problem on battery bus will impede charing battery and also blocks the correct control of PPBUS_G3H voltage.

"Did you try DFU mode?"
???

 

[kjchatman1]

after restoring with dfu i'm getting the apple with the progress bar and configurator gives an error. the device stays in "recovery"

 

[2informaticos]

Can't start Internet Recovery?

 

[kjchatman1]

I get the apple configurator error as soon as the apple and progress bar shows. do you know where i can the u4770 image?

 

[2informaticos]

Do you get progress bar on the target machine?
No need to maintain AC2 then.

 

[kjchatman1]

yes the target machine powers on during the ac2 restore and that error immediately pops up. it powers off when the usb-c data cable is unplugged

 

[2informaticos]

Which area has been affected by liquid?

 

[kjchatman1]

i'm not sure what parts was affected by liquid. it was thoroughly cleaned soon after i received it. it stays in this recovery mode and a restore will make it power up but with the error. i'm using a usb type A port on a 2014 mac mini. Maybe that could that be an issue

 

[kjchatman1]

i was waiting on a trackpad ribbon that i ordered for it. According to https://logi.wiki/index.php/DFU_Mode_Restore_(Macs), the trackpad has to be connected so i'm pretty sure this is the problem

 

[2informaticos]

TP must work correctly, or KB will not work.