Might throw this in there but obviously the motherboard was not moved.
Problem: Machine reports coin door open all the time
Solution: Check motherboard mount in Pin 2000 computer case
If your machine is reporting this, check the raised mounts under the motherboard in the Pin2k computer case.
Inside the Williams Pinball 2000 computer case, there are 6 raised, threaded metal lugs acting as mounts beneath the motherboard to secure it to the case. However, some of the replacement boards don't allow all the holes to line up. The top middle peg (closest to the power supply) can grounding out on the bottom of the motherboard where there was no hole to secure it and causing the machine to think the coin door was open.
To fix this, cut three rubber mini post grommets in half horizontally to make two small rubber doughnuts and use the six rubber pieces to create insulators for all six posts. Once it's insulated and re-secured to the mounts through the insulator/spacers you made, problem should be solved!
