Super Rev. blowing fuses one after the other

[dupedd]

My '69 Super reverb is blowing fuses and I can't figure out the culprit. The amp suddenly cut off in the middle of playing and then after turning amp off, I examined and fuse was blown. I tried a new fuse, it blows right away. I tried replacing the rectifier after that and then next fuse blew immediately(front bulb just flashed on and then off), no tubes lit up. I then swapped out the power tubes, tried new fuse, same deal, no go. I had been having strange noises coming from the amp recently that I was able to fix by swapping out different preamp tubes(it wasn't just one tube that was giving me trouble). I'd switch one out and the problem would go away and then the next time I'd play the noise would come back,I'd switch out preamp tubes and find another one that was "causing" it, switch it out and the noise would be gone. The noises were somewhat of a crackling and I just assumed it was a microphonic tube. What should I try next, any ideas? Any help would be great.

[slider313]

Sound like you may need a cap job.

[dupedd]

I had the amp completely overhauled a few years ago, the caps are new. I forgot to mention that I was having this problem last year with it blowing fuses. Eventually the power tranny went and I had to replace it.

[SatelliteAmps]

Check the two resistors coming off the pilot light that go to ground, as well as the light itself. Sometimes those resistors go bad, and cause a short, and I have seen loose bulb sockets ground out the filaments, causing an arc (and taking out a power transformer)

[phsyconoodler]

Quote: I had the amp completely overhauled a few years ago, the caps are new"

A few years ago? Sounds like a candidate for having those caps checked again.Maybe one was stressed by the PT failure.

[VaughnC]

There's obviously a short inside the amp...but shorts can be caused by a number of different things. Could be something as simple as wire insulation, or a shorted transformer, or anything in between. If you don't understand the internal workings of an amp and don't have some basic test equipment you'd be just guessing at the cause. You've tried replacing the tubes...so its probably time for a trip to the local amp doctor.