no sound at all from a JCM800

[bionic]

Indicator light is lit and I've checked it with two different cabs, known good chords, tubes all light up, no burnt up OT smell and I still can't get even a hum out of it. Anybody have any things I should be looking at?

[gldtp99]

Possible HT fuse blown---- these often blow as a result of the output tubes being worn out.
This is a common scenario but since the amp isn't on my bench in front of me----- it is impossible to tell for sure..................gldtp99

[Billy Penn]

I also vote for the HT fuse. Check it out and post back.