Hey Gang
My FB is showing error “ Check Fuses F101, F109 J127 and the 12 volt opto supply” and/or “slam tilt stuck closed”
When game boots, I usually get error “ Check Fuses F101, F109 J127 and the 12 volt opto supply” If I get error “slam tilt stuck closed” first,I close a slam tilt switch and then game appears to start for a couple seconds then DMD shows “ Check Fuses F101, F109 J127 and the 12 volt opto supply” I checked continuity and both slam tilt switches are open as they should be.
I checked fuses, all good. I have 11.9v DC at F101 and TP100. I measured 6 volts at F109 (I think F109 is from transformer J127 and is AC volts so not sure if I have DVM leads correctly) I followed schematic and measure 12v DC at all opto boards ( gray-yellow wires) and grounds OK. All other TP’s have correct volts too
I read an old post on similar issue with TOTAN where u20 was culprit so replaced u20(2803) same problem!
Also the diagnostic switches on door don’t work (just error codes appear on DMD)
If I drop in a coin I hear the “added credit sound” but DMD only shows error
I’m stumped