ChaosJohn
Active member
So I have a Q*Bert that was working for several years and stopped working recently. After trying several simple things (checking fuses, etc), I decided to buy an Arcadeshop switcher kit for Q*bert to replace/rule out the power PCB.
I wired it up and the game booted right up and was playable. (woo hoo).
Then I completed the install by mounting the switcher inside the cabinet and tapping the AC off of the monitor power wires. I turned it on to hear the happy "<knocker> I'm turned on."
The problem is, now it boots directly to test mode and won't go out of it. The select button and "game/test" switch don't seem to have any effect. I unplugged and re-plugged the connector that goes to the test panel, thinking maybe it had come loose and wasn't communicating with the PCB, but no dice.
If I understand what's happening correctly, if the PCB gets NO input from the test switch, it assumes it's in test mode - the circuit has to be closed to put it in game mode. So somewhere between the service panel and the main PCB, the signal is getting lost. Does that sound right?
Could this be a filter board issue? Any idea which of the filter board connectors run to the service panel? (the schematics don't even show an "A8"). Any tips on what else could be causing the disconnect and how to fix it?
thanks a bunch.
I wired it up and the game booted right up and was playable. (woo hoo).
Then I completed the install by mounting the switcher inside the cabinet and tapping the AC off of the monitor power wires. I turned it on to hear the happy "<knocker> I'm turned on."
The problem is, now it boots directly to test mode and won't go out of it. The select button and "game/test" switch don't seem to have any effect. I unplugged and re-plugged the connector that goes to the test panel, thinking maybe it had come loose and wasn't communicating with the PCB, but no dice.
If I understand what's happening correctly, if the PCB gets NO input from the test switch, it assumes it's in test mode - the circuit has to be closed to put it in game mode. So somewhere between the service panel and the main PCB, the signal is getting lost. Does that sound right?
Could this be a filter board issue? Any idea which of the filter board connectors run to the service panel? (the schematics don't even show an "A8"). Any tips on what else could be causing the disconnect and how to fix it?
thanks a bunch.
