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Blown Fuse Mesa 400+

So, I was playing a gig and all of a sudden my amp starts cutting out then cuts out completely. It's a Mesa 400+. After the show, turned the head back on and tried playing it, it made some sound, then blew a fuse and turned off. Everyone I know seems to think it's a power tube. Any thoughts or ideas on what's wrong?
 
Yup, mine did the same thing a while back. Static, the sound cut out, then "pop"... It was a power tube, but a power tube failure can lead to other problems in the "kill you dead" regions of the circuitry that you don't want to poke around in. Shop time: get it checked out.
 
The one thing you could check yourself is to simply make sure all your power tubes are fully seated.

One of the power tubes in my 400+ rattled a 1/4" out of its socket and caused a short blowing several fuses.

When we found that tube we simply pushed it back in and this amp has never blew a fuse again. no-chit!