Was trying to adjust a switch with the power on, and as I unscrewed it, it touched one of the solenoids. It acted as though a fuse had blown, but everything sort of reset, and then it was powered and running again. Solenoids and lamps weren't working.

When you turn off the game and turn it back on again, it says "Improper Driver Board" on the display. All the fuses are good. I've reseated all the connections on the boards and inside the cabinet. DMD works fine. No sound. Start button starts a game, but then nothing happens. Basically nothing works on the playfield except the general illumination.

Lesson learned. Dear lord, what have I done?

Upon further review, the center of U19 (listed in the manual as IC TPIC6273 D-Type FF) was melted?!? I had never gone over the boards before because everything was working...so although I suppose it could have already been like that, I doubt it. Will get a replacement and see if that helps.

Photo on 11-3-13 at 7.54 AM.jpg

Ugh. Any advice for other stuff to check while I wait 4 days for a new TPIC6273?

Also, general ignorance question: why didn't a fuse blow instead of this?

Shit.

A new TPIC6273 did not fix the issue. Seems like I could have fried just about anything. Suggestions on where to start?

This is a silly bump, but everyone year or so, someone sends me a direct message to ask if I ever fixed the problem.

The answer: I did...sort of. I ended up sending the board away to Clive at Coin Op Cauldron. Basically every chip on the board had been fried. He was able to fix it, but it was a lot of work, as you might expect.

PSA: Do not create a path for voltage to travel from a coil to the switch matrix. Ever.