JimWest wrote on 2021-08-05, 09:17:
TheMobRules is right about the short circuit. I have often noticed this behavior of the PSU in the event of a short circuit.
I think I would check everything again. All soldering points, polarity of the caps, short circuit on the caps, etc. If you can't find anything here, then I would also check all jumpers.
I had the board once too. I still have a few photos of the sale. If you find them useful, I can post them.
Yeah I took another quick poke around with the multimeter before work today and most of the caps are shorted together, so I'm probably just gonna remove them and start over.
I followed along with the manual and I'm pretty sure I got all the jumpers right, but perhaps I should check again with them all removed before I start desoldering.
EDIT: Feel like a total idiot, still had a short after removing the jumpers, so started desoldering everything until I'd run out of caps and still had a short. Then noticed I missed a couple jumpers. Removed them, no more short. Gotta reinstall all those caps now.