Burning Fuses

[Remco]

Hi Guys,

Maybe a silly question, but I'm still a rookie at this and I'm trying to learn as much as possible.

I have a nicely filled Pedal board (7 pedals including tuner) and i'm running my pedals on 2 9volt supply's. (all are 9v pedals)
In the fx-chain i have 2 homebrew pedals. Both completely done to all the GGG schematics and layouts.
it's a Tremolo pedal en and a FX-Switch.

The problem is that i've been burning fuses in my amps lately. Both my Bandmaster reverb and my Custom 50 Hiwatt. i thought it had to do with blown power tubes, but yesterday i was playing my friends Fender Deville with my pedals and yes he's amp went out. burnt fuse again.

Is it possible that it has to do with the amount of amps going in the the amplifier?

Thanks,
Remco

[JKowalski]

Playing your amps too loud? Maybe you have a boosted signal running into the amps and your amps turned up to 11?

The actual current going into your amp input depends on the type of input, but in all cases it is minuscule and has no direct relation to anything that would cause a fuse to blow. However, if your signal is boosted too high, then later on in the power stage of the amplifier, the amp would have to put out more power than it is normally used to (bigger signal to amplify than normal) and the power amp would draw more current then normal, because you are running your amp to the limits.

Considering that none of your pedals are out-of-the-ordinary, though, and amps are usually fine with hot signals... maybe its just coincidence. 

[petemoore]

  Are they doing this when using the same outlet or supply circuit ?
  Something is common here...
  Very probably not the a boosted input, [check for DC on the effect output for good measure..] especially if the monitor [the speaker] for the output amplifier isn't making insane noises or output levels...I've seen 'em blow fuses/outputs when 'sledgehammered' for enough time to allow high currents to heat up..stuff like coils and output transistors that dissipate heat.