The past two weeks the sound has been cutting out while playing my Mesa Mini Rectifier head. By cutting out, I mean it goes from great sound to a muffled muted sound, randomly for no reason. I had changed the power tubes about 4 months ago, I play 60-90 min a day and the amp stays in the house.
I ordered new power tubes today but just for shits and giggles, I figured I would trade places for my two el84 tubes. When I did this, no sound would come out of the cabinet at all. I had the old tubes that I replaced so I tried them and swapped all four tubes in every possible combination but couldn't get the sound to come back on. I checked all my connections and everything is plugged in properly. With the head's cover off, I could hear a slight buzzing sound near where the tubes are when I would strike the guitar strings, but that sound would not resonate through the cab.
Before I take the head to the repair shop, is there anything you recommend trying? Does this sound like a bad pot or something?
Blown fuse maybe?