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Fuse Blowing on Superamp AE 25

Hello!
My AE 25 suddenly blew the main AC (2 amp sloblo) fuse. I took off the bottom cover and can find nothing that looks like a problem - no swollen components, no melting anywhere, etc.
Has anyone else experienced this? I am waiting for mail-order fuses now, and will put in a new one and try it, but it will be two weeks before they arrive. Meanwhile, I'm wondering if this is a common problem - maybe an AC spike that did it if the normal operating current is close to 2 amps? Any experience with this out there?
aatos

Showing 2 responses by newbee

newbee
4,811 posts
 
You may have had a power tube short out.
newbee
4,811 posts
 
2 caveats w/new tubes, 1)be sure to turn bias screws back (counter clockwise) to minimum before you insert new tubes and turn on. 2) Although it was not a problem for me with my Cary amps, it is not unusual for a power tube loss to be accommodated by a blown out resistor in the bias curcuit. You should note this when you bias new tubes if it exists.

Hope that solves your problem.
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