Quoted from shirkle:
I’m having some issues. Mine does one of these three things upon boot-up:
1. Loud beep and displays IRQ FAILURE.
2. Just plays garbage or random sounds.
3. Boots, but when playing it automatically locks the first two balls when launched, and the third ball is perpetually locked if I capture it.
Wanted to follow up on my own post. Finally had time to mess with this a little. I noticed that the symptoms changed the longer the game was on, occasionally booting completely into a game.
This morning I checked 5v and found it at 2.9v. I pulled the PS board, reflowed the solder on almost the entire board, plugged it back in and boots up perfectly now.
The game is now playable except for one issue, which is quite frustrating to get to:
If you achieve multiball, it releases the 3 locked balls, but it will not kick the 4th ball up. It has to go into search mode and then it kicks it up (so the coil is working). It makes the call out for a successful landing, so I know the switch is working. But it won’t kick up the ball.