After finally believing I had all issues sorted out with my Barracora rescue, the switch matrix has now gone nuts!

The only 2 rows that are still functional are rows 5 & 6.

Pushing a switch on the others will trigger all switches for that row!

I've given it a good visual inspection, but haven't seen anything suspicious. I also disconnected and reconnected the connectors, with no difference.

Both the Power Board and CPU / Driver board are brand new rottendogs.

Is this likely a board issue? Or a Playfield issue? Seems strange to have board issues with the new ones.

Where can I start to to get this girl back up and running?

I think I've checked the diodes, but will go back over them.
Oh man, I hope it's not the PIA (Edit - Realized these are now socketed! Woohoo!)

The game *was* working for a about a dozen games, and then all of a sudden started acting up in the middle of a game.

I do have a DMM.

Everything was working fine during the middle of a game, I think I went over the center rollover switch (not positive that was the one) and shit went crazy, the bell rang, credits added, game reset (maybe highscore reset?)

In the switch test mode, you register all switches in a row with a single switch.

Thanks will follow your instructions tonight and report back. Realized the PIA would be much less of a big deal now that it is socketed!

Did the test above and found it's column 3 that is messed up. Any thing that touches that will trigger an entire row of switches. I swapped the PIA with no luck.

Because it's an aftermarket board, I'm not positive which chip that is anymore! I took some photos, maybe you can help me identify?

In the second photo, c151 is the bad column. I tried to trace where it went into, but was slightly confused. Any thoughts?

// Error: Image 115292 not found // // Error: Image 115293 not found //

I'm not sure about this, I found a couple diodes that may have touched metal. Would this be enough to cause a short and fry the chip? It's hard to say if they were the culprit since it wouldn't fix anything to move them away from the metal.

Cool, just spoke with Jim and he identified the chip for me.

Thanks for the help all!

New chip installed and we're back in business!

Thanks for all the help everyone! And props to Jim at Rottendog as well!

Ended up being the socketed chip in the 2nd pic, the one on the right side. I don't have the # on hand. Love those socketed chips!

Ha! You and me both! You better come by and get some games in while it's still playing!

Sure - you're welcome to come get some games in

Edit - Didn't realize that was you John. See ya tomorrow