OP
OP
I thought that but it was also causing the phantom diode fault on the switch matrix itself, whenever the playfield glass switch was closed, and you then closed any switch in column 1, all the same row switches in colum 8 would 8mitate closure too. If that makes sense. Which anyone would think was a bad diode? Nope. The power Driver board cleared this right up.
Also I should say that the second fault occurred when the opto board was plugged in or not.
Also I should say that the second fault occurred when the opto board was plugged in or not.
