Here's the main power circuit board. There's a quite hard conformal coating. Bit messy: Flux residue and a few scraps of loose solder visible around the through hole parts, I'll try to clean off, if it hasn't been coated onto the board.

The DC rail storage is off-board in two 400V rated 680uF caps in series, with screwed in contact mounts. I'm guessing this is a voltage doubler design, good guess @diver300! @kenshirriff has a good summary of these at https://www.righto.com/2021/05/teardown-of-pc-power-supply.html - I wasn't very familiar.

The red wire between the two suggests to me that the same board is probably used with minor tweaks for 3-phase and the 220V output variant. (Plus things like the X-caps being populated for all phases on this single-phase board.)

#electronics #StraightOuttaShenzen [2/?]