Rookie here. Went from building custom guitars (well still do) to Pinball. I was given a Monte Carlo that had nothing working. I now have everything cleaned up and running except two things. The GI lights stopped working (but were). Coin door lights work, Roulette Wheel GI lights work, but nothing else. I have the schematics, but not sure where to go at this point. All the GI lights with Violet/Grey/White wires are out, the Black and White ones are on. Fuse is good until I checked the T relay and closed it then fuse blows and knocks it all out from above. I cannot seem to trace where the violet/Grey/White wire starts. Oh, I did check the sockets an they are all good with the old 9V battery test. Looking for some help please. Fuse is good and not blowing, but those mentioned lights above will not come on. Cannot wait to move this from my garage to my game room.

Thank you

F6 Play field Illumination is the one that blew. I have out a new one in and it is not blowing. The T relay contacts were touching when they shouldn't have. It is my understanding that they should not be touching unless game tilted correct? So that appears to be corrected. However, no lights on any of the Violet/Grey/White wires. The ones with Black and White still work, door, roulette wheel surround for example. Again, thanks for your input and time. OH yeah, no mods at all it was original when I go it. When you say lightbox can you clarify location. I am total new here.

Thank you very much. This helps a lot. I will let you know how it goes!

So found the problem with your help of where to look. There are at least three broken wires under the playfield coming off the three lights for the bumper alleys on GI and one near the bottom near a kick-out which is also GI. I will be doing some new wiring to replace most of not all GI violet grey wiring. Unhooked some already and ran a jumper from fuse to the lights no longer hooked and worked fine. Ground is good! This actually showed me where the lights they were and were. Not sure it was the right way, but you got me in the right spot! Thanks much and I will keep you posted. After that and the ground mods I will move to my last problem. A teaser.... stargate ramp! Have a great weekend

It's dead. Put a new solenoid on to replace a burned one. It immediately died again and no ramp movement. All the switch contacts look good. The one I replaced was not the original one. I am wondering if it was not wired back correctly and then i put it back the same. You have a monte right? Perhaps you could take a photo of yours for me to compare. I had also read a transformer can go bad, I have a new one by part number, but not sure which one it is. According to the person I got this from, the ramp did not work when they received it in the early nineties.

So GI lights are good to go and did the ground mod. Thanks. Ramp question before I dig into it. Should it be up or down during the start of the game. Also, do you know where the transformer for this is under the play field?

Second issue I found under the hood. I have a Black and white wire (Looks like same wiring that roulette wheel lights are hooked to) above the wheel looking at play field in up maintenance mode that are wire nut together. Not connected to anything. Could you possibly shoot me a pic of that area. Thanks again for all your help. I get the ramp and the mysterious black wire fixed, I think I am good.

Here are pics. One is the black and white wires not attached to anything. Others are the coil for ramp.

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Thanks. Also see I have the top left ball kickout not registering a ball in it. One thing after another. I really do appreciate your help. I wonder what is frying the coil and/or keeping it from working. My ramp is down all the time.

So I have a brand new MPU and Driver board installed. Ramp did not work prior and was hoping that would fix it. Replaced coil and it still did not work. I saw somewhere that there is a transformer to replace under the playfield and I ordered it. But do not seem to be able to find location. It is one of the silver circle kind. Other than that wiring looks good, board is good, and fuse is good, just put a new one in. And fo the life of me, do not know why the kickout switch does not sense the ball. Contacts are good and no alterations I can see.

Swemmer MPU and Rottendog Driver Board. I will try the switch this afternoon. Have a great day.

I still have them. bubble wrapped and boxed for parts o if someone is interested in them.

A transistor. Ok I’d have to do some looking on the location but there are the small boards under the playfield.

Found the transistor and it was bad. Replaced it and ramp is working! So stoked. Three switches not working, top left ball shoot and then game is good. For now lol. Switched contacts are good, will need to figure out what’s up. Solenoid fires on ball top left hole. Just switch is not reading it.

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31,33,35 and 24. Looks like all the 30's are on the same connector. So I will check that out. 24 never noticed because ramp didn't work before. Message me if interested in the boards for a fair price.

they did not register in test mode .

I played the game this morning and realized also that the top left capture is more than the switch no recognizing the ball. If I put it in the game mode where they kick out unless lit, it still doesn't kick the ball. The Kicker Sol does work in the test environment however. And the switch over the ramp when down is still a no go. I will look at the diodes. When you say tensioner, that is where there are thee blades? So all should be apart?

So switches look good. It’s in the wiring somehow I guess. Just when I thought it was getting close. The other two work which is odd .

Yeah they were on a board under playfield if I was looking correctly. All of them were good.

Thanks. Top left kickout and then One switch rollover up above pops and then gate roll under

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Even underneath making sure they touch they are all dead in the water. Baffling.