820-3476,running slow after rescue from liquid spilled

roy.ruan

New member
Having a 820-3476 ( SN check shows late 2014) a1502 boards.

board had liquid spilled, got previous repair attempts. wasn't professional.

so I ultrasonic cleaned the board, found that it doesn't charge, always show the "charge machine" logo. but never get to power on.

found that it's short on smc_5_g3_scl (the battery scle to isl and SMC) .injected 3v. found that isl is hot and then replaced.

then can recognize the battery's scale , and power up.


but fan start spinning full speed, can't boot into OS . ( tried few SSD, only one booted in) ,feels like sensing circuit /sensors issue, but NO ASD... tried 3S162 but says it doesn't support.

so where should I start now??

thanks ahead!
 

roy.ruan

New member
Tried 162 efi and 155 OS both didn't work , one said unsupported model one has that "stop" sign and didn't boot in
 

roy.ruan

New member
the SN check shows late 2014, I have an idea though, since 3476 is model for both 2013 and 2014, if I revise the SN in the EFI (use a 2013 machine's SN) , you think it should make the ASD work?
 

dukefawks

Administrator
ASD does not look at serial, it looks at the MBP8,4 or whatever marker and SMC firmware. But if you don't want to give you serial number I can't help you.
 
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