drop targets on Gottlieb RoboWArs not registering

flex

Well-known member

Donor 7 years: 2019-2025
Joined
Sep 26, 2007
Messages
2,792
Reaction score
434
The fuses for the pop bumpers are fixed, but the drop targets are registering when knocked down. they stand back up when ball is lost, but not scoring. Anything to look for besides hte normal grounding issues with this?
 
It is a switch matrix issue. It the problem is with the mpu/pcb cpu itself there are a few small chips that strobe and return the switch matrix on the pcb. Very cheap chips. For the exact chips and more info, pinwiki.com gottlieb system 80 look up the cpu diagramd they are labled.
Need any other infos hit me up.
Toby
 
Back
Top Bottom