Fixing this game for someone else who just bought the game, problem I am having is one row of switches is not working. I have checked all switches physically, in switch test, checked physically and electrically the diodes, the wiring is good. I have pulsing on the strobe.
The board was tried in another game and worked flawlessly. I have tried shorting out the strobe and return in this row and nothing.
I have attached a picture of the switch matrix, the problem is on row I7. As a note, I have pulsing on all returns including this one, but if I close the outhole switch, the pulsing is slower or irregular.