Quoted from Redback37:Update:
Checked J604 pins output on AV board and at end of cable just before it plugs into the DMD board (both the same so not a wire in here):
Pin 1 - -114.6 (LOW)
Pin 2 -88.9V (LOW)
Pin 3 - key
Pins 4 and 5 - 0V (ground)
Pin 6 - +5.1V (OK)
Pin 7 - +11.7V (OK)
Pin 8 - +62.5V (OK)
Rechecked all connections to transformer.
Rang out wires between J605 and Tx - good continuity.
The high voltage section of the WPC95 A/V board has 2 circuits the 62v and the -113v/-125v.
J605-1/2 (80v AC) input is correctly producing 62v DC (J604-8 62.5v) - not sure why/how you get a different input voltage at F601 (51.5v) and possibly your measurement of J605-3/4 (100v AC) at F602 (-63.6v) is not right either??
The HV power circuits do fail and best to simply replace the entire HV section on the board. Here is the HV repair kit that Marco sells https://www.marcospecialties.com/pinball-parts/WPC-SEMIHV20516
ChrisHibler might be able to add some further insight or advise how to best measure the input voltage from the transformer