My Mesa Express 5:25+ started losing volume and sound becoming brittle from time to time. It works fine for a couple of minutes and then volume becomes low and weak. After a couple of minutes volume comes back to normal again and then same thing repeats. Sometimes there is no problem for an hour...
I have a led issue with my Express Plus 5:25 too. All is working except the Preset Depth led. Anyone done a led fix before? I don’t have a Mesa tech support close to me and US Mesa support do not give directions for DIY fix.