[HAM] Question

[Richard and Beth Kilen Beth]

I have a Hammond M3. No sound comes from it other than the humming whereby
you know it is connected to electricity.

I have had all the tubes/bulbs checked and they are all OK. Are there fuses
or any other such thing that could be an obvious thing to check for sound?

If you have any ideas I  would so appreciate it.

Beth Kilen
bark at mwt.net