I turned on my amp for the first time since Christmas today and found that everything works (tubes still glow, lights still work, fan still works etc.) except for the volume. I've tried plugging in a patch cable into the FX loop but it didn't I left it in standby for ten minutes as I usually do and still nothing. Any suggestions?
Thanks in advance.
Just because the tube glows doesn't mean it's working properly. How old are tubes?