Friend of mine’s Royal Rumble (WWF) is acting up.

It’s going into the Diagnostics menu randomly in the middle of a game.

I stopped by his place today to check it out and I managed by to get the diagnostics menu to pop up immediately on my first game when activating the flippers. I assumed there was something lose. So I restarted the game and shook it, and happened again. Checked the back box. Poked around and couldn’t reproduce it. Reseated c14 but didn’t get much further before I had to leave

I noticed that when powered on it going right to the High powered disabled/interlock switch message with the coin door open or closed. Even when pushing the interlock manually the message persists.

Also The service switches are currently removed (not by)

I’ve never had any issues with service/interlock switches on any of my data east game so this is new to me. I know these switches are not on the matrix and I tracked the service buttons to c14 via the schematics I found online (I don’t have a hard copy for my game either) but nothing on the interlock switches.

I have a feeling the diagnostics/and interlock messages issues are related and it’s likely shorted somehow

The interlock shows open/closed
The service button activates randomly, but it goes right to Diagnostics instead of Adjustments so that likely means the Green service switch is showing that it is in the depressed position.

Anyone have any ideas on this or where to start?

Yeah I thought about something being jammed behind that board. He had the game at a techs shop for a shop job and some powder coating. This issue started shortly after it returned to location.

He cut that service switch off for him and tapped the wires….. But really he could have pulled the connector at the mpu I guess.

I’m trying to wrap my head around how they are connected. Can’t really find anything in the schematics about that interlock.

I brought the mpu out of my WWF but didn’t bother trying it as I think he might have something else going on. Plus my I had my game set to free play and I couldnt switch to coin drop for him with his service switch cut off lol

There was a lose coin mech and coil plunger flopping around in the bottom of the cab and a hand full of washers. Not really ideal to have that in the cab when you’re transporting. I gave the playfield a little shake when I pulled it up to see if there was anything lose in there. I’m going to head back tomorrow when I have some more time and have a closer look. I’ll likely start with putting that service switch back in and double checking the wiring on those interlocks. Then follow the loom back to the mpu and pull that board off to check behind it.

Thought I’d see if anyone has had a similar issue as I couldn’t find any threads that seemed related to get some ideas.