Nord User Forum

Power in Western Europe is pretty good, but still there were quite a number of people with resetting NL3s due to the power supply issue. The fix is cheap and not that hard - if you don't trust yourself soldering that capacitor in you can probably find someone who is handy with a soldering iron. Of course, that assumes it is actually the power supply that is causing issues.

And how can you really check it without trying that fix? Another set of fuses?
That becomes anoying, I get some nice sounds out of the machine, but wortking in a DAW is painfull.

The fuse either works or it doesn't - I don't see how the stability issued could be caused by the fuse. It's a passive component that (intentionally) breaks if too much current flows through it (= something is wrong, like a short-circuit in the instrument). The fuse is there to protect your Nord, but that's it.

If you have the right equipment (oscilloscope) you can measure if the power supply is causing the issue (the voltage on the 3V3 regulator drops too low), you can check it for ripple, etc.