you haven't told us what type of amps you have but...
on my Cary SLAM-100's there are TWO fuses per monoblock - one's just for the tubes and I forget what the other's for - and I have had situations where one of them blew and there was no sound but the tubes still lit up fine.
on my Cary SLAM-100's there are TWO fuses per monoblock - one's just for the tubes and I forget what the other's for - and I have had situations where one of them blew and there was no sound but the tubes still lit up fine.