Hi. Recently serviced a damaged A1466 Macbook Air. Thought to post the issues and resolution for each.

Macbook AIR Model A1466 Diagnostic 09-01-2021

Issue: Liquid damaged (beer spill) Macbook AIR will not power up.


Problems & Resolutions

1) Attached Apple magsafe power adapter. No green / no orange light. This confirms the absence of the PP3V42_G3H voltage rail. The PP3V42_G3H rail is the primary voltage rail necessary to communicate with the magsafe power adapter to report the green or orange light status to the end user....

Got a MacBook Pro M1 Pro 16'' to rescue immediately after liquid accident - I got it in less than 30 minutes after the spill.
It got spilled from behind when the laptop was closed. It mostly affected the rear of the mainboard and the bottom of the LCD.

I quickly took it apart and washed the liquid residue off the mainboard.
The area around the UP800 had some light corrosion, but it just washed away with some IPA. Other areas looked undamaged.

The mainboard got a thorough cleaning, as did the top case and LCD connectors / cables.

Now the laptop...

Hi,
I am trying to fix this liquid damaged 2020 Macbook pro and I noticed something weird.
When I push on/around the renesas 501cr0b IC, which appears to be a clock generator/ multiplier, If I apply lot of pressure, the device will reach 19.9 volts and seems to be trying to work.
I have thoroughly reflowed that area and completely removed that chip (there was some liquid stain in that area) but no help. I have just 5v 0a unless I apply the pressure.
Your help is GREATLY appreciated. Thanks!

Hello everyone,
I am new into this, sorry to post it here. I want to make this as a pet hobby project, as this mac is not urgent.

I have (Macbook Pro 13inch 2017mid) A1706 820-00923-A

My mac had liquid damage a long time ago, the connector from J8500 is damaged on pin 46 (PP5V_S0_ALSCAM_F), I guess the LCD/display panel is in short circuit, as I saw the connector from the LCD burned as well.

And the resistor L4004 is literally burned.

From what I see from the schematics, it does not affect any other rails, only the connection to the display...

Hi, does anyone perhaps have the boardview schematic for an Apple Macbook Pro 2024 M4 A3401? Many thanks in advance. (I managed to find M3, but there are differences in the board layout)