Fuse blowing tube amp

Gene Wright · Post by **Gene Wright** » 17 Jan 2002 12:58 pm

I have a 1963 tube type, Super reverb Fender amp that keeps blowing fuses. Where should i start to check and do they have parts for this old silver face. Would it make a good steel amp? It looks great but has this problem. Thank, Gene Wright

Ken Fox · Post by **Ken Fox** » 17 Jan 2002 2:02 pm

Pull both 6L6 power tubes and see if it will holf a fuse. If it does not blow a fuse at this point, problem could be bad output tubes or output transformer. If it blows the fuse with 6L6 tubes out of it, I would look a the rectifier tube next (sub a new one). If that does not do it, it's off to a good tube amp tech!

Ricky Davis · Post by **Ricky Davis** » 17 Jan 2002 3:58 pm

What Ken Said.....Perfect.

Jay Ganz · Post by **Jay Ganz** » 18 Jan 2002 8:13 am

Does it blow soon after the amp is turned
on, or does it take awhile? If it takes
a little time to blow, look at the output
tubes to see if one of them starts to
glow red in the center right before the
fuse blows. That would indicate the tube
is drawing too much current. Either
because the of the tube itself, corrosion
in it's socket, a leaky coupling capacitor
throwing off the bias voltage, or in
the worst case, a bad output transformer.
If it blows fairly soon, it's a power
supply problem....rectifier tube, filter
capacitor etc. that is shorting out.

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