My Lynch box crackles and pops and then the volume fades and eventually disappears. If start picking pretty hard or messing with guitar volume knob then the volume starts coming and wham it's all back all of the sudden but only to go back to the same behavior within a 15 minute span Not sure what's up? I change the modules tubes and that's not it, the power section tubes seem ok -they bias just fine. Any tips on what can be causing this? Does it sound like an input or power transformer problem?
Thanks!
Thanks!