Marshall Head -need help

[GhettoWayz]

hello,
y;know the blue cylindrical things in the powerhead? ona 100w amp?? one of mine is blown, unde rit is a blown transistor. now may lead channel doeant work....

what are the blue things in the power head head called? does anyone know??
I'd like to know the nam eof thes epuppies as I need to replace one of them in my amplifier....

thanks for your time

 

[Agtronic]

You're talking about those large blue cylindrical thingies? Those would be the capacitors.

Sorry, I don't know anything about amps, hopefully someone will chime in with some real info. I'm pretty-much just guessing.

 

[Echoes]

Okay, first off. Whatever you do DO NOT open up your amp and tinker with stuff. Even when they're off, most tube amps contain lethal amounts of electricity stored inside them.

I have never blown a transistor, capacitor, or had any mechanical/electrical failures on my amp, but I would do 2 things:

1. Check out websites online for info on this subject. I don't have time to look for any right now, but I know they exist. Just do a search on Google.

2. Take your amp either to where you bought it or to a person who is qualified to fix it. Unless you want to run the risk of killing yourself, trying to fix it on your own is probably not a great idea.

You shouldn't have too much trouble with this if you find someone who knows how to fix it. I think that a blown capacitor (or was it a transistor?) is a fairly easy problem to repair.

Good Luck!

 

[silencekit]

If the problem is indeed a burned resistor and a burned capacitor, it shouldnt be too hard to replace both. You need some soldering skills though, and it might be a good idea to uncharge the capacitor before you touch it. Unless you want to fry yerself that is.

But since you're not even sure what a capacitor is...
...I'm guessing you're not up for the job. You really should take your amp to a tech imo. Even if you can succesfully replace both the cap and the resistor, there might still be some other problem. I'm a hack myself, for all I know you'll fuck up yer amp even more if you do what I described. So again: Leave it up to a good tech. There are lethal voltages inside tube amps, even when the power's off.