- Check you CAD database.
- Test you custom PCB before BGA packing.
- Check every pin on the board.
- Consider if Virtex-4 is too old to run with your circuit.
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Home » Questions » PCB Design » Why do all the ground leads short outs beteween each other after Packing Virtex-4 via BGA?
Read More: BGA PCB Assembly
#PCB Design
We plan to visit factory next week. Could we know more about how many basic PCB testings in EMS field?
We receive a batch of PCB with scratches from my supplier, but they think it is acceptable. I have never seen such error on even an B stock boards parts. Very confused. How do scratches affect PCB working?
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