The wiki will be ongoing maintanance this week. This might cause slight downtime. We apologize for any inconvenience.
This page exists to document the weird errors you might see once or twice in a decade, but that can leave you scratching your head for hours.
Board works when flipped right-side-up, but stops working upside down![edit | edit source]
- Video: https://www.youtube.com/watch?v=9cs3f-oI-lI (MacBook logic board repair - 820-2530 no backlight repair)
- Cause: Weak solder joints are pulled out of contact by gravity when they are upside down.
- Fix: Reflow / replace solder joints.