Solution Edit: Pinsider shimoda was able to fix the board and his process on the fix is below.

Older Edit: I've narrowed it down to the CPU board, please see post 16, any help is appreciated.

Hey everyone. I just purchased a WWF Royal Rumble that is acting weird. When I turn it on, it makes the sounds like everything is normal, but then the DMD goes blank. If I open the coin door, it seems to work, then goes blank again. The sounds will play in the background like normal. If I put in some quarters, it will allow me to play a game, but say during the end game "match" sequence, the screen will go blank again. Also, if I hit the adjustments button, it will say adjustments menu, but not let me do anything beyond that.

Here's a video of me turning it on and opening the coin door.

Thanks for any help!

Let me know if more videos would be helpful.

Bump, any thoughts?

Thanks for the comments, I'll look into the voltage and connections. I am curious though why I have to open the door to get it to do anything further?

I've tried removing and re-seating cables. No dice. I haven't had a chance to test the voltages (which I'll be doing next). rich_r31, as shown in the video, mine does it from the get-go, did yours do the same thing where it just sits there until the door is opened, or...?

I've replaced the cpu and display roms, checked all fuses, and it still acts the same. The 3 cpu self test leds appear to be showing normal (pia blinks on when turning the game on, then turns off, then 5v and blank stay on). Not really sure where to look now.

Interesting you say that. So here's the weird thing. I can press the switch inside the cabinet (not on the door, like say my Baywatch) to get to the "Audits & Adjustments" menu, but it wont allow me to go beyond that. Pressing the black button (the green one is a lock-button, i.e. you press it and it stays down like a clicking ball point pen, press again, it comes back up) from there doesn't go further into the menu, it recognizes the button press, makes a sound, and just keeps flashing "Audits & Adjustments" on the dmd. For further reference, I have now replaced the roms (cpu & dmd) with the most up-to-date.

Any thoughts?

Also, I have checked the voltage to the dmd, I get a solid 4.88 with nothing showing on the screen.

After watching a video of the machine, and messing around a bit, I've realized, the only scenes that are showing on the dmd is the score. I'm not getting any other graphics, such as the wrestler skillshot option at the beginning. Instead, it just shows the player score, and does that for the entire game, until the ball drains, then the screen goes blank.

(Note as mentioned earlier, the only way to start a game is to open the coin door, then shut it. Otherwise the game just sits there doing nothing, no sound or anything. If I open the coin door, then shut it, it will let me play).

Any help would be greatly appreciated.

Also realized that after I turn it on, the GI lights will all light up, then it will make the door open "buzz" sound (with the door closed), and then the rear GI lights will turn off and stay off (slingshot lights will stay on) until you open the coin door.

Please, any ideas on where to look?

Ok... I've narrowed it down to the CPU Board. I have a Baywatch, and it uses the same CPU board as the WWF Royal Rumble. I took the CPU board out of the WWF Royal Rumble, and placed it into the Baywatch (swapping the Baywatch ROM as well). It did the same thing. Step by step of the issue is below per placing the CPU board into the Baywatch.

Turn on machine
Display reads DMD ROM version and plays the intro statement audio (this is the last thing shown on the DMD)
GI light relay clicks
All GI lights are turned off (DMD still not displaying anything)
Open coin door
GI lights come back on, attract music begins playing (DMD still not displaying anything)

For further reference, I've tried switching the 6802 & 6264 chips with the Baywatch, both were working.

Any ideas on what else to look for on the CPU board that is causing this?

Bump, any help?