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Bga failures

2017/2/27 23:10:47

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.

747
4
27

Conrad

2017/3/1 23:10:47

Quite useful and impressive info.

bruno.bellini

2017/3/1 23:10:47

I am going to keep checking for new writings.

Guillaume Leblanc

2017/3/1 23:10:47

I am going to keep checking for new writings.

Michal Olszak

2017/3/1 23:10:47

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

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