(Topic ID: 199393)

Board blown up - Photos needed - Bally Truck Stop

By ilikepinball

4 years ago

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  • 8 posts
  • 2 Pinsiders participating
  • Latest reply 4 years ago by ilikepinball
  • Topic is favorited by 1 Pinsider


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#2 4 years ago

Those two tantalum caps always blow on that board. Replace them with electrolytic caps 10uF 25v+

The tantalum cap failure could be from excessive ripple on the 12v supply. You can check VAC across the 12v filter cap on the power supply board. Anything more than quarter volt of AC seen and that cap needs to be replaced.

#4 4 years ago
Quoted from ilikepinball:

I didn't know that. Thank you. I will check and change the caps.
To be sure that I didn't had a black out while playing with the plugs, I still need photos.
Anyone out there with a Truck Stop?

I suppose if the 12v was hooked up to the 43v it would make those caps blow too. I think they are rated 25v.... but it is very typical for those caps to be bad.

The bally manuals should help. Even if you dont have one for truck stop, a similar game will be wired up the same. The way the connectors are done, you have to try pretty hard to plug something in wrong.

Often on games that have sat for a while and then powered up, both of them will go off like firecrackers. Usually those boards looks like this.... evidence of a burn out

20171003_113008 (resized).jpg

#6 4 years ago

reset is generated by 12v. Since parts there went bang, including tantalums what are probably across the 12v too, id imagine you hit the 12v supply with over voltage.

I don't think it is ruined, but it will probably take some work to fix. I would replace what has failed and see where you are. The resistors are probably fine, lift one leg and recheck if you want to be sure.

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