(Topic ID: 106342)

Gorgar Resistor 8R7

By pinballpicker

9 years ago



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  • 9 posts
  • 7 Pinsiders participating
  • Latest reply 9 years ago by barakandl
  • No one calls this topic a favorite

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#1 9 years ago

Has anyone had this resistor (located near the magnet lamps) burn open? I installed another one (330 ohm/2W) and now the magnet lamps are operating but the resistor is getting very hot and won't take long to burn up again. Any ideas on how to fix this issue?
8R7.jpg8R7.jpgsch_1.jpgsch_1.jpg

#2 9 years ago

A 2-watt resistor is going to dissipate a lot of heat. I would run it and see how it does. It may last 20 years.

If it burns out again try a 5 or 10 watt sandstone resistor. It will get hot too.

#3 9 years ago

Resistors do get hot

#4 9 years ago

Might want to move that wire harness away from the resistor, or mount the new resistor up away from the wires.

#5 9 years ago

This was normal for all the games that use this flashlamp circuit. Go with a 5 watt. Or get LEDs and the resistor will no longer be needed.

#6 9 years ago

Those are under rated. Use a 5w sand/cement or 3w metal resistor.

The half Watt one can be changed to 1w.

#7 9 years ago

Lamps are original ?
(or "stronger" ?

#8 9 years ago

Thanks for the replies guys. The resistor starts getting hot the moment the machine is turned on, and gets hotter every minute. I really don't know its purpose in the circuit. The lights work fine without it. I could try a larger wattage resistor but I think that would still get very hot too. I'm not really sure if there's a problem or not. I wonder if Williams ever had a service bulletin on this issue.

#9 9 years ago

It is a warning circuit to keep some current going across the flash bulb. You can disable it, but then the flash lamp will burn out faster.

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