Hello all and MarkG,
I have tried your suggestion above and I have posted the result details below. It appears to work when bypassed directly at every 1,000 points. Did each individually as well. I did continuity checks on the listed wires from PCU thru each Drum (Drum set to 0) and found no issues. I did find a mechanical issue with 3rd player 10,000 drum and corrected the loose armature. But that did not change anything after fixing. Still the same. On to the next suggestion.
Jumpered red-yellow at PCU to yellow-black at PCU.
o Results= Each of the 4 players lit the same player light when they hit 1000 points. (Good)
Jumpered red-yellow at PCU to each payer PCU wire individually
o Results= To 3rd player yellow-white, Yes, it worked for 3rd player only and no others (Good)
o Results= To 4th player green-white, Yes, it worked for 4th player only and no others (Good)
o Results= To 2nd player orange-white, Yes, it worked for 2nd player only and no others (Good)
o Results= To 1st player maroon-red, Yes, it worked for 1st player only and no others (Good)
Checked Continuity between PCU and Score Adjust plug wires
o All 4 were good to plug and thru plug to outgoing wires.
Checked continuity between Score adjust plug outgoing wires to each player 10,000 Drum including thru the drum to out going wire. (Note all 10,000 drums indicating 0)
o Player 1 PCU maroon-red to score adjust in, score adjust out white-red to 10,000 drum white-red, 10,000 drum white-red thru drum out to blue-orange. (no issues)
o Player 2 PCU orange-white to score adjust in, score adjust out orange-blue, to 10,000 drum orange-blue, 10,000 drum orange-blue thru drum out to blue-white. (no issues)
o Player 3 PCU yellow-white to score adjust in, score adjust out green-blue to 10,000 drum green-blue, 10,000 drum green-blue thru drum out to blue-white. (no issues)
o Player 4 PCU green-white to score adjust in, score adjust out white-green to 10,000 drum white-green, 10,000 drum white-green thru drum out to blue-brown. (no issues)