Need to make 3 more nights of gig!

[Amp Kat]

I don't know which socket had the tube failure, but you shouldn't use that socket in case it was a socket failure. I tried to imply that in an earlier post. With two working tubes in two working sockets your amp should sound about like it's suppose to but not quite as loud. Maybe try the two outside sockets. Nothing to lose.

Good luck

Chuck

That was why I recommended running one instead of two because I don't think he was putting them in the right socket and if the screens are blown on both sockets on one side it's a moot point which may be the case or maybe just a low bias point introducing crossover distortion which is the other moot point. Either way that amp needs a tech bad.

[Chuck H]

+1, I can't imagine both screen grid Rs on the same side burning unless it's a bias issue. And bias issues that effect only one side aren't typical. But it does happen. Sucks it's not working, but my goal was to get JB into 50 watts AB1 instead of some much lower wattage class A into a push/pull OT. Oh well, whats done is done. Hopefully the amp will find itself in a shop soon.

When I used Marshalls I always had to keep two on hand or reserve one at a rental shop local to the gig. It always seems to be something different with Marshalls. And though they seem to be made well and enjoy continued success, mine and everyone elses I know of seem to break down more frequently than is acceptible.

Chuck

[justbelieve]

I'm Back!

Sovtek 6L6/5881 tubes came in, installed matched set. Back to normal clean and loud volume but....

RED LIGHT - v10, v12 trouble when standby up...

Manual says replace fuse and rebias. Will this fuse be at radio shack (one close by) or......?

And if I rebias myself, can a get a dc volt meter at radio shack? Do I need some type of "pro" one that people who do this for a living use?

Thanks, - luckily no show till after Xmas, so have some time.