HELP. RN Pro Pioneer Edition) Not turning on, but...

QUESTION: Would you advise ordering two PS's, one extra for the next time this fails in another 4-5 yrs and no replacement PS can be found at that point, well at least for a reasonable price (about $40)? I mean, honestly I spent good $$$ on this NAS unit and hope it lasts at least another 10-15 years (like my 7 year old Dell laptop still running strong), especially since it is not on 24x7.

I did, though I have two Pro's. That was the only 250 watt SFX supply I could find, and it's not available in a commercially packaged version.

Replacing the supply is pretty easy: Remove sides and top cover. Remove system fan panel. Unplug all connectors. Remove plastic channel that holds 24-pin cable in place. Remove screws at power supply and switch. Work supply out. Remove external power connector from internal (wires do pull off, but mine took a lot of wiggling and pulling). I think I may have removed the memory to make it easier to remove and install the 24-pin connector, too.

You can try the supply before actually installing it. In fact, you can do that with just about any ATX supply to verify power is the problem (though I agree it sounds like that's it).

Installing is mostly the reverse of removal, except you need to add the 24-pin extender and the plastic channel will no longer fit. I cut short the supply hard drive wires and installed the right-angle Molex connectors from the old supply to keep the air flow unrestricted and just to look cleaner, but you don't have to. I also cut off the "ears" of the extender so it would lie flat between the motherboard and side, and taped it down with double-sticky foam tape.