Spy Hunter Question - odd grounding

texasmame

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Okay. According to the schems of the CPU board, pins 2/3 and 4/5 at 20pin J1 (the one that usually gets burned on the harness) are tied together and each gets 5v.

However, when I test those pins for continuity, they all show as grounded!

The work looks to be factory and pins 6,7,10 and 20 all show to be grounded as they should be.

This does not compute.

Help!?!
 
If the board is connected to a switch mode psu when you are testing then that will give the appearance of a short to ground, even if powered off.
 
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