MacBook Pro 2012 Liquid Damage - Have to Bypass SMC

I have a Macbook Pro Mid 2012 with liquid damage (Sugary workout drink). Only a small amount got on the logic board from what I can see but one of the chips was covered in the stuff. I cleaned off the one side of the logic with distilled water and isopropyl alcohol and when I disassembled it I didn’t see any corrosion on the side where the heat sink is so I didn’t bother cleaning that side.

Anyway it won’t boot up unless I hold down the power button to bypass the SMC. I can’t run diagnostics because I wiped the hard drive but doing the apple web recovery diagnostics it doesn’t detect anything wrong. (I tried downloading the apple hardware test from GitHub but installing it on the system and making a bootable usb doesn’t work, it gives me an error: Error: 0x8000000000000003, Cannot Load 'EFI/Drivers/TestSupport.efi'

Status: 0x00000003

The memory slot 1 sensor can get up to 90 degrees so I tried running 1 piece in each slot and switching different memory sticks to see if that was the issue. It didn’t make any difference. TG Pro says that the battery is outside current. Would it make any difference replacing the battery or is the power section on the logic board probably messed up?

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Its likely you have a logic board issue with the power logic. Not sure why your memory slot 1 thermal sensor s firing off. You'll need to trace out the logic from the schematics and boardview for your system.

Sadly, Apple messed up the EFI update in the newer macOS's so the onboard diagnostics won't work any more. Please post a bug report so it gets fixed! The more people who complain the better likelihood of being fixed.


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