connector and the CPU. [Somehow, that reminds me of the PEBKAC acronym (look it up ]

This may help those looking up this acronym. It's also known as PEBCAC. For those not motivated to search, it's Problem Exists Between Computer And Chair

 

You might have been able to find your "boo-boo" faster had you maintained a clean project. Some of those pictures show a PCB that are so dirty you can't see the traces through the stuck-on flux.

 

You might have been able to find your "boo-boo" faster had you maintained a clean project. Some of those pictures show a PCB that are so dirty you can't see the traces through the stuck-on flux.

Mea culpa, that was me back then - just a beginner. Now I keep my circuits much cleaner. Still, even if clean, I would not see the problem without my microscope.

 

It works, phew! Only then I call my coworker - she's all happy.