HI just got a new (3 days old) JVM 205C and played it a couple of times then when I went to turn it on again it will not make a sound!
It starts and all the tubes light up but when you turn off the standby nothing happens and no sound at all comes out, not a click as if the standby swith is doing nothing.
I did read the manual about the FX loop button muting the amp without effects plugged in but I have tried everything I can think of so far, guitars, leads other power sockets but no go!
Anybody have any ideas???
Email our team at firstname.lastname@example.org who will be able to advise next steps. As your amp is covered under warranty, they will be best placed to help!
since you ruled out the fx-loop mute, it may very well be a tube related problem, which could have taken out the HT fuse inside the amp
tubes being lit, doesn't say if they're working or not, but most of the time, you should also see a blue-ish glow inside the glass of the powertubes, when the amp is in playmode... in standby mode this glow isn't there
the glow looks like this:
Both switches need to be in the ON position in order to play. -Rod-