Gottlieb Monte Carlo dead as a doornail

TheDrewster

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So I just acquired a Gottlieb Monte Carlo that has been outside for who knows how long. After fighting the wasps and spiders for reign of the machine, I finally get it set up. I have taken all the boards off, cleaned all the connectors, reseated all the socketed chips I could find. When I power it on, all I get are some playfield lights and the backbox light. Nothing else. Not a peep.

Where should I start?
 
I dont need a driver board (Yet...) but I think what I need is a System 80b power supply board. All the readings I am getting off of it are in the .3s no matter what wire I test
 
I dont need a driver board (Yet...) but I think what I need is a System 80b power supply board. All the readings I am getting off of it are in the .3s no matter what wire I test
Are you sure you are testing it right? At that power level you shouldn't even get the lights you have...
 
I am testing it the only way I (think) I know how. I am not testing the transformer inside the cabinet, I am testing the board in the backbox
 
The problem you'll have is that you've got a system 80B game and there's not a lot of information on pinrepair.com about that series. System 80B is not the same as system 80 and 80A so a lot of the troubleshooting is not going to apply to your game.

Things like checking bridges will be relatively the same from game to game but I would suggest you get a copy of the manual. You can usually get by with just online stuff but system 80B is really lacking when it comes to online troubleshooting guides. At least that's been my experience. Unfortunately I've had to fix quite a few of them. I've got a Genesis sitting in my basement right now with a switch matrix problem :)
 
Well, I found a bad bridge rectifier, but I cant replace it until tomorrow. Thanks for the help so far guys!
 
The problem you'll have is that you've got a system 80B game and there's not a lot of information on pinrepair.com about that series. System 80B is not the same as system 80 and 80A so a lot of the troubleshooting is not going to apply to your game.

Things like checking bridges will be relatively the same from game to game but I would suggest you get a copy of the manual. You can usually get by with just online stuff but system 80B is really lacking when it comes to online troubleshooting guides. At least that's been my experience. Unfortunately I've had to fix quite a few of them. I've got a Genesis sitting in my basement right now with a switch matrix problem :)


I would love to have a Genesis and Robo-war!!!!!!
 
Ramps on a Genesis are knackered, every time. Someone had tried to fix mine with bondo and pink paint......I kid you not.
Yep, fabulous game with easy to understand game play.
I actually like it better than High Speed now I have them both.
 
Alright, I ordered the bridge rectifiers because they are stupidly expensive locally. Is there anything else I can check in the meantime?
 
How is both the ramps on yours? Come across many of them with trashed ramps I can't wait for a repro!!!!!!!

Mine are actually really good. The whole game is really nice overall. I'm going to install some entry protectors when I shop it out... eventually...
 
Alright, so I replaced the bridge rectifier and that did nothing. I am starting to think the whole transformer is bad. What voltages should I be looking for and where?
 
Here is a short video of what I am seeing. Some playfield lights and varying patterns on the display.
 
You have got to get yourself a schematic of at least the transformer and power supplies and start probing with a meter.
So far all you know is the GI 6.3V AC is OK and the display voltages are there. The big cap strapped to the transformer tray will stop the display working when its on its way out but this looks like a more obvious problem.
BTW, the back looks like they used peg board, helps with cooling :D
 
You have got to get yourself a schematic of at least the transformer and power supplies and start probing with a meter.
So far all you know is the GI 6.3V AC is OK and the display voltages are there. The big cap strapped to the transformer tray will stop the display working when its on its way out but this looks like a more obvious problem.
BTW, the back looks like they used peg board, helps with cooling :D

The Pegboard was my idea :D haha, its a very rough setup at the moment until I get everything working funcitonally.
 
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