If that doesn't work, there is usually a 1N400(X) diode on the reverse side of the board that will correspond to the lamp. These can go bad.
(Topic ID: 181565)
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Quoted from grantopia:Thanks! Any idea if the diode numbers on the board correspond to the lamp numbers? I can't seem to turn up much on this via the manual or google.
Just follow the trace from the solder pads. One of them will lead you to a diode leg.
Did you check continuity from the pad to the leg of the diode? Also, sometimes diodes test good when they are not. I would replace D3 for peace of mind. 5c part and easy to do.
Quoted from grantopia:Wow, not sure how I didn't think to do that ha...too far inside my own head. That'll be on the list for tomorrow. I'll grab a replacement diode in the meantime just to be on the safe side. Is there any wiring worth checking out in the meantime or is that not a likely suspect?
I would also double check the IDC connector for loose wires.
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