R.I.P. Power Supply

[printbus]

...Does anyone have ideas about things i should check, etc.

I assume you're using one of the usual 12V 30-amps or so switching power supplies that fit the mounting hole pattern on the MakerFarm printers. The vast majority of such power supplies sold on Amazon, eBay, and 3D-printer sites are low-cost knock-offs of a Mean-Well brand power supply. Presumably built with lower quality components or inadequate quality control, a few threads here have unfortunately discussed these knock-off power supplies failing.

While some failures might be caused by something simple like a bad solder joint that could be easily fixed, it's probably best to consider the power supply non-repairable. The original Mean Well design does have a replaceable small glass tube fuse (under the cover, on the circuit board near the terminal block) on the AC input but that would most likely burn open only as a precaution when something else has failed in the power supply. Any problem downstream from the power supply should just shut down the output, not open the fuse on the AC input. You could check it and replace it if it appears burned open or tests as open with a meter. If the fuse is good or burns open again after replacement, I'd look for a new power supply.