[Chris K]

I pulled out the power supply board off the inside back of the chassis that’s directly hooked up to the AC line. The 120V is split, one line going to the board I pulled and another to the 2 boards mounted to the plate above. There are no RIFA caps on the board, just the safety cap on the AC line which I replaced. Maybe this is a later model because the RIFA caps have been switched to WIMA capacitors and I don’t see any evidence they have been changed afterwards from the soldering. Anyway, I gave the board 120V AC and measured the output from the 6 pins of the J2 connector output on the other side of the board. I got nothing. No DC or AC which I checked just in case I wasn’t reading the HP sketch correctly. No schematic from HP of course. Hopefully someone knows the board I’m talking about. It’s the one with the big 100uf 450V line filter cap on it. I guess if I’m not getting any of the low volt DC outputs from it my initial focus should be on this power supply. I did find a list from a YouTubber who tore one of these down of the most suspect caps that should be replaced regardless of failure so I’ve ordered them. Do you guys think I’m troubleshooting this in the right way?