Piershil
Does the black-red wire to the mpu have connection at CN12-2?
Check the pin in the Molex housing....
Also check the pin in the Molex housing at the PPB side.
Are they IDC connectors?
(Topic ID: 253726)
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A relay does not leak, it's just a wire wound coil.
If you put a voltage on one side of the wire, it will also be on the other side (as long as there is no ground connection).
Are you sure there is connection between J6-6 & 7?
With J6 connected you should get voltage at J6-9 (through the relay coil).
When you ground J6-9 the relay should energize.
What you show in the video is normal behaviour, as there is no ground the energize the coil in Game Over situation.
The relay only energizes when needed and in Game Over it is not needed.
With J6 connected, tap the metal plate of Q29 on the CPU.
That should energize the relay, thus making ground to J6-9 via Q29.
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