While the ICs in the AUX lamp boards frequently go bad. Your mixed results sounds like soldering mistakes.
(Topic ID: 135515)
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I probably have a bunch of these aux lamp boards. If you need a rebuilt and tested good one, let me know.
There is a few versions of this AUX board with different components. Make sure everyone on same page.
Clock pin should be lamp strobe 2 i would imagine. Lamp strobe 2 should be the inverse of lamp strobe 1. Both lamp strobes should always be pulsing. Probably near the zero crossing timer.
Lamp strobe 1 is not used on the aux board. You want lamp strobe 2. It is P11 on MPU j1.
The rest of those voltage readings you can assume are pulses which is valid.
Quoted from cody_chunn:I wouldn't do any board work yet. That Pin 3 never getting above or below .16 has me concerned. I think we should meter the other lamp strobe and see what its behavior is.
All the rest of the lights seem to be working properly?
Also a cheap logic probe will increase your troubleshooting abilities exponentially.
amazon.com link »
There have been threads where some were suggested here as well.
The lamp strobe pulse is near zero crossing. So it is really slow which I think makes pulse will look like very low volts on a DMM's average reading. Probe or scope will tell for sure.
http://www.amazon.com/Elenco-Electronics-LP-560-Logic-Probe/dp/B000Z9HAP4
+2 on this logic prob. I like it. After getting used to it, you will start relying on the sound it makes.
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