JUst finished replacing the bridge rectifier on my frankenstein and now on the display it reads open coin door. when i open the coin door nothing happens. I can't put into switch test so I'm assuming it must be something on the board. the coin door switch was working fine before I changed the bridge and the aa batteries. Because I can't put it into switch test I'm assuming it's a bad chip. Any thoughts????
Paul

make sure the switch matrix connectors are on properly.