Quoted from Brewchap:I did the test as described on the PinWiki site and I was not able to trigger a signal on the switch test. I had some LM339AN on hand so I when ahead and removed the old chips and I lost two pads.
I install 2 sockets to replace the removed chips and tested continuity on all pins.
I installed the LM339AN chips and I now have a "Ground Short, Roll 3" displayed on the switch test. I removed the chips and hook the opto board back up and the error when away.
Do I have the wrong chips, do I have another problem or did I just mess up the board.
Just to clarify, I don't know if the bookcase has ever worked. The game is fairly new to me and when I did realize that I had a problem, I found J3 connector removed from the opto board and started troubleshooting from there.
Just replace the opto board?
Rancho Cucamonga, CA
