Chicago Burbs, IL
I get you want it fixed but you may want to check your boards first before you swap in the new ones. If you fix your old, you resell the old ones as NOS.
IF you have a CPU issue, broken wire, connector issue the problem will follow.
Pull the MPF, get the optos out and plug the connector back in. The view the opto emitters from a camera (iphone works) to see if the emitters are glowing. They are on 100% of the time. If any are out, start there... reflow solder, check continuity to the connector.
faz
