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Finished the work but still no joy. I made a mistake in saying the output of the module is several low power DC voltages. It's a straight 24V DC coming out of pins 1,2 and 3 on the J2 connector. I know I'm getting DC from the rectifier transistor because there's a huge buildup of DC in the filter cap. Ask me how I found out! The transformer that splits the board seems to be OK but after that, I can't find where the voltage gets stopped. There's no IC chip on it to start or stop voltage production based on voltage thresholds so this should just be an AC power on/DC power out board. The board is a non HP product, an Artesyn NFS40-7624 unit but I can't find a schematic for it. I did order the CLIP manual and schematic package but there's no schematic for this board because it's not HP.
Found a NOS one on eBay for $99 so I'll se if I can figure out what's wrong with mine by using it. I'll then put the NOS unit in my 8643 and sell the repaired one. That's the plan anyway.
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