Game: Mr Mrs Pacman.
Condition: No cabinet, purchased as playfield and a box of bits. MPU was toast from battery damage. All other boards ok.
Story so far is documented here...
https://pinside.com/pinball/forum/topic/mmpc-first-ss-second-pin-coffee-table
The issue and question:
Upon power up the game boots, all displays function correctly. Can add credits and start a game but not in a position to go further as assemblies not installed.
If I leave the game in attract mode it will wait the required time then start the attract sequence. Once the attract sequence has finished all hell happens with the feature lamps. It is like a Christmas tree on acid.
This is with LEDs and incandescent lamps. It is not strobin or ghosting it is like a scene from poltergeist.
I replaced U14 and C16 and the timing circuit seems to function correctly.
I'm assuming the MPU boots to 7 flashes, the processor then starts the attract sequence and when it gets to the end of that program loop something goes wrong.
Has anyone had anything similar happen or has anyone got some suggestions on trouble shooting?
Condition: No cabinet, purchased as playfield and a box of bits. MPU was toast from battery damage. All other boards ok.
Story so far is documented here...
https://pinside.com/pinball/forum/topic/mmpc-first-ss-second-pin-coffee-table
The issue and question:
Upon power up the game boots, all displays function correctly. Can add credits and start a game but not in a position to go further as assemblies not installed.
If I leave the game in attract mode it will wait the required time then start the attract sequence. Once the attract sequence has finished all hell happens with the feature lamps. It is like a Christmas tree on acid.
This is with LEDs and incandescent lamps. It is not strobin or ghosting it is like a scene from poltergeist.
I replaced U14 and C16 and the timing circuit seems to function correctly.
I'm assuming the MPU boots to 7 flashes, the processor then starts the attract sequence and when it gets to the end of that program loop something goes wrong.
Has anyone had anything similar happen or has anyone got some suggestions on trouble shooting?