Fixed a 60-in-1 for a friend tonight. The board was stuck in the Service Mode. It booted right to it and would not exit without a power cycle, then it would boot right back into it. It never booted to the normal load screen. Normally this would be caused a stuck service or test switch, but those weren't wired up so I knew it wasn't that. I took the board home for testing and after tracing out the pathways and probing around, I quickly found that the input at the PR15 resistor 'bank?' had a minuscule solder bridge between the input for Coin 2 and Service. Removed the bridge and the board is booting normally and working fine. I looked up this issue and found that people have experienced it in the past without finding out the problem. Well, here it is. Posting this info in case anyone else runs into this problem down the road. Here are some pics for reference. Game on!














