I have a Gottlieb Sys 80b Diamond Lady that boots and goes into attract mode but no switches work including the coin switches, etc. So I'm unable to start a game. I am able to hit the test button and it runs through the various tests but for switch test it shows all switches open but it does not detect any switches if I manually activate them
This all started when I was playing a game, all of a sudden mid game the game started acting crazy,. A ton of switches and points were being activated on their own. After about 15 seconds of this I shut the game off. When I tried to turn the game on it powered on, reset all the drops, and went into attract mode but would not start a game or register any switches. I did do the ground mods prior to all of this happening
I checked voltage going into the mpu and it wasn't reading reliably. I ended up repairing the power supply as it appeared the .1uf capacitor c1 had blown mid game. I replaced it and Power supply is now giving a steady 5.1 volts and the game boots and goes into attract mode but I still have no switches. Any idea of what I should check next? My guess is that one of the switch matrix chips on the mpu fried. Also, this is a replacement Swemmer board which has different schematics than the stock board. Thank you in advance for your help!
Also before all of this started I had issues with a few of the switches that wouldn't register. 3 center bank drop targets and my right slingshot. I'm not sure if that would be a connector issue or possibly an issue with the under playfield diode boards possibly?
