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(Topic ID: 147393)

Williams Fire Lamp Question

By FirePro911

4 years ago

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  • 4 posts
  • 3 Pinsiders participating
  • Latest reply 4 years ago by BENETNATH
  • No one calls this topic a favorite


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#1 4 years ago

I have been running diagnostics and trouble shooting all the lamps on my Williams Fire machine.

The machine was set to all lamp test, so all the lamps were flashing.

Lamps 11 through 16, Lower 3-Bank (#47 type) are not working. I've traced all the wires back to the circuit board in the top cabinet, tested each set with my Fluke to make sure I get the same readings there as I do at each bulb. In both places, my Fluke flashes O/L.

So I then tested other lamps of the same bulbs. Either at the lamp or at the circuit board, the Fluke flashes between 1.5VAC to 2.5VAC the best I can tell. Non of the working lamps flash O/L continually like all the six that are not working.
Flashing Lamps-2.jpg

So upon closer inspection, I find one of the Lower 3-Bank lamps has a burned up resistor, as you can see in the picture. The white arrows point to the bad resistor.
Flashing Lamps-1.jpg

So now my question is: Would that burned up resistor cause all six of the lamps connected together to not work? Since all of them are on the same YEL-RED wire? Though each lamp with a resistor has a different color coded wire to each resistor.

I'm wondering if that burned up resistor is creating a short across them?

Thanks for taking the time to read and hopefully I explained it all correctly.

#2 4 years ago

That is a diode across the lamp socket, and yes it can be shorted.

#3 4 years ago

Thanks, I'll replace it and hopefully the six lamps will light up accordingly.

2 months later
#4 4 years ago

any news on that ?

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