Replacing my Tezro's PSU was easier than I anticipated, the basic procedure is:
1. Unplug the 4-pin molex connectors.
2. Undo all 4 Torx 15 screws, and slide the PSU towards the front of the case until loose. I set mine on top of the VPro card cage while I did the next steps.
3. Unplug the 5-pin, ATX connector and 10-pin custom connector.
I recently bought a NOS version from Israel for under $100. I'm going to have my original cleaned and refurbished by a gentleman in WA soon.
I'm the system admin of this site. Private security technician, licensed locksmith, hack of a c developer and vintage computer enthusiast.
https://contrib.irixnet.org/raion/ -- contributions and pieces that I'm working on currently.
https://codeberg.org/SolusRaion -- Code repos I control
Technical problems should be sent my way.