Arcade Collecting > Pinball
Playmatic Chance MPU Problem
DarkSide:
For some strange reason an entire row of mixed 40xx ics was burned out, i really wonder how that could happen.
The machine is back online, or half that is, got a broken solenoid for the targets, can still coin up, but there is something fishy with the relay that turn the power on for the playfield.
Those Playmatic machines are not easy to repair.
DarkSide:
A bit more progress, i think there still is something wrong with the MPU board, i cant get the test program to leave the first test, does not matter how many times i push the button.
Schematic is a bit weak on what controls the test functions, so its gonna be a pain figuring that out.
DarkSide:
MPU Board fixed 100%, it was the CD4019 that was dead, and making the test program malfunction, fixed also a few bad connections with the relays, and the playfield is now working almost as it should, got a stuck solenoid for the POST targets, i just hope its not dead.
Game now turns on, displays are working, still a few bad connections on the headers, but other then that, finally 10 steps forward, and none back :)
DarkSide:
Okay, i have a problem, one of the Solenoids/Coils for the drop targets is melted, and there is no where to get a replacement.
Its marked AC-1405, if anyone know where to source one of those i would be happy, otherwise the machine is garbage.
DarkSide:
Pictures here:
http://edesigns.dk/Coil/
Its a pretty big coil.
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