Why do all the ground leads short outs beteween each other after Packing Virtex-4 via BGA?

After We have assembled the Virtex-4 FPGA BGA package on our custom design PCB, we check for short circuits between all power grounding and they shows short cut between each other. Please tell us about any process for debugging this issue.
  1. Check you CAD database.
  2. Test you custom PCB before BGA packing.
  3. Check every pin on the board.
  4. Consider if Virtex-4 is too old to run with your circuit.

Read More: BGA PCB Assembly

#PCB Design

Oliver Smith

Oliver Smith

Oliver is an experienced electronics engineer skilled in PCB design, analog circuits, embedded systems, and prototyping. His deep knowledge spans schematic capture, firmware coding, simulation, layout, testing, and troubleshooting. Oliver excels at taking projects from concept to mass production using his electrical design talents and mechanical aptitude.
Oliver Smith

Oliver Smith

Oliver is an experienced electronics engineer skilled in PCB design, analog circuits, embedded systems, and prototyping. His deep knowledge spans schematic capture, firmware coding, simulation, layout, testing, and troubleshooting. Oliver excels at taking projects from concept to mass production using his electrical design talents and mechanical aptitude.

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