Evil kenevil pinball flippers stop working

Willcat

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Evil kenevil pinball from the 70's. Games starts off playing fine. At 4,000 points, it hits the free game(has 40 credits at all times)there's the pop of the plunger, then flippers stop working. When it happens, there is a hum or buzzing noise from behind the glass. Sometimes the flippers will start working again. Otherwise, you need to turn the game off and back on again it it works fine.

This is an intermittent problem. Once every3-4 games.

Thoughts? Ideas?
 
Evil kenevil pinball from the 70's. Games starts off playing fine. At 4,000 points, it hits the free game(has 40 credits at all times)there's the pop of the plunger, then flippers stop working. When it happens, there is a hum or buzzing noise from behind the glass. Sometimes the flippers will start working again. Otherwise, you need to turn the game off and back on again it it works fine.



This is an intermittent problem. Once every3-4 games.



Thoughts? Ideas?



Sounds like the relay on the solenoid driver board the board in the upper right corner of the back box or the associated circuitry with it.

-pat
 
It may be a issue with ground, if you are missing some of the screws that hold the boards down in the backbox you will have intermittent problems, those screws provide the boards with ground. That or if your ground has been broke off at the plug in.

Rodger Kilgore
 
Sounds like a problem with the knocker if its going off when you get the free game check the coil and the transistor associated with it on the driver board.
 
Unplug the game, remove the connectors from the power distribution board and pull it away from where it is mounted, you can't remove this board because of the wires soldered to the back of it. I recommend using a magnifying glass to inspect the solder connections on all of the connector pins on this board or just reflow the solder on all of them.

Rodger Kilgore
 
Thanks for the help. I'm going to be looking at the game tomorrow. Will let you know what happens.
 
Nothing to report. Person said the game has been working since the last time I was there.
 
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