something interesting to report. I found under solenoid test, the neon test. I chose it to repeat but also needed to manually activate the door interlock switch. When I did this, a few controlled lights flicked on, did it again and some other lights flicked on briefly. I thought I found a lamp that was ascrew in its holder and replaced the bulb. The neon strobed during the test. Put the game back together and no go. Did the test again and got lights flicker on for a millisecond.

Too tired to have another look but now convinced something is shorting. Could it be the actual  holder eventhough the light works? It was a GI lamp by the way.