Musical Fidelity 550 supercharger monoblock fuse location?

Per a quick Google it seems that the main fuse is located in the power cord on the UK version.

I also read elsewhere (USA version?) that there are no user replaceable fuses (refer to a repair facility) which would make me think that they are located inside.

Perhaps you can Google pics of the particular unit you are working for and get lucky?

DeKay

Here's one I found, but I can't see Jack on this screen when I enlarge it.

https://www.tubecad.com/2008/12/blog0153.htm

DeKay