I have checked the connectors and they all have continuity
I found that opto receiver switch no 32 (under left gun sw 2) only had a voltage of 40 mV, whereas all the other opto recievers have about 200mV. This opto does not register in the switch edges test.
The transmitter glows fine when viewed through a digital camera - so i assume it is fine.
There is continuity to the connectors, so i am wondering if one of the LM339's on the 16 opto PCB might be gone??? If so, i don't know how to determine which one....Do you think i'm on the right track or wandering up the garden path???
