Members beno Posted December 7, 2014 Members Share Posted December 7, 2014 Hi all, I was doing some recording tonight and notice that my Lead channel started squealing when I didn't actively play something. It also stops squealing when I change it to either Rhythm 1 or 2. I figured it would be a preamp tube, but I tapped all of them and none of them seemed to come through the amp when tapping. I wanted to come here and ask for some help of those who'd know, rather than start swapping preamp tubes at random. Thanks for your help! Link to comment Share on other sites More sharing options...
Members Mikeo Posted December 7, 2014 Members Share Posted December 7, 2014 I just happen to catch your post here. Do you have a couple of spare 12ax7's cause I really think you have a pre amp tube that's gone belly up. It's also difficult at times to tell which one it is, so try swapping out one at a time.Not all tubes that are bad will be microphonic either.I have had many Mesa's an it's a common issue. Once you figure it out, you should be all set to go. Give it a try. Might even be more than one pre amp tube too. Just make sure you turn off the amp when changing pre's Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.