Quoted from McSquid:I shotgun replaced all the trough switches, outhole switch, lock switches, and their diodes. Now I get consistent behavior... Consistently bad. When multiball begins, it immediately ends. With all 3 balls still in play. Jackpot never lights. If you get a ball up the ramp it counts as a lock. All switches test good, with finger and ball. At this point I'm desperately hoping getting the roms updated fixes something because this is driving me nuts.
Sorry I missed this . I love BK2K track down threads. I had a similar issue a while back and the issue ended up being not all three switches were registering all the time in the upper three ball lock. Humor me and eject all the balls. Restart the game and go into the switch level test and put in one ball at a time. Do all of these register as they should using a ball and not your fingers. Also those switches are micro switches attached to a small board with a connector on the end. Does that connector wiggle at all? If so reflow solder on it.