Bga failures

2/27/2017 11:10:47 PM

All,

We have a board that has failed at burn in.

There is a 672 BGA on the board. When the test guy presses down on the BGA the board will pass !

What am I looking at here? Board finish is ENIG - could this be black pad / what should I do to diagnose the problem?

Any advise very much appreciated.

Conrad

3/1/2017 11:10:47 PM

Quite useful and impressive info.

bruno.bellini

3/1/2017 11:10:47 PM

I am going to keep checking for new writings.

Guillaume Leblanc

3/1/2017 11:10:47 PM

I am going to keep checking for new writings.

Michal Olszak

3/1/2017 11:10:47 PM

I really appreciate your content.Good resource for new beginners.