cGoEcYk

I found this ad... seems like a bargain. He says he's changed out the tubes but that the amp basically fades out/dies after being on for 10 seconds. Transformer issue? I love Marshall cleans... don't wannt pull the trigger without more info though.

http://albuquerque.craigslist.org/msg/3561040509.html

Robbgnarly

It could be a variety of things honestly, but for $90 I'd get it. Your lucky I live in FL or I'd totaly ninja you

__________________
2002 PRS CE22
197? Sanox Sound Creator LP clone (GFS Fat Pat)
2009 Epiphone G-400 (SH-4)
Marshall JCM2000 DSL100
Krank 1980 Jr 20watt
Krank Rev 4x12 (eminence V12)
GFS Greenie/Digitech Bad Monkey
Morley Bad Horsie 2
MXR Smart Gate

cGoEcYk

I know I took my chances since probably no one else lives out here in the desert.

I read up a little more and it seems like this amp was designed such that it's prone to overheating, board could be melted. I found someone with a similar problem with the volume and they had it diagnosed by a tech as the OT being fried. Kinda on the fence about it.

Is the Celestion Heritage in it a good speaker?

gerraguitar

if it's a good sounding amp then the fact that you're spending so little on it means you can spend the money to get it looked at by someone and fix it up. trust me you'll be glad you did if it's a promising amp

__________________
Fender Strat Deluxe
Fender MexiStrat
Epiphone Sheritan
Ibanez Artcore
Fender Twin Reverb silverface
Roland JC120
Pedals

Robbgnarly

The speaker alone you can get $90 for used so you can always sell it off if the amp is to expensive to fix. and you made your money back just by selling 1 part of the amp.

__________________
2002 PRS CE22
197? Sanox Sound Creator LP clone (GFS Fat Pat)
2009 Epiphone G-400 (SH-4)
Marshall JCM2000 DSL100
Krank 1980 Jr 20watt
Krank Rev 4x12 (eminence V12)
GFS Greenie/Digitech Bad Monkey
Morley Bad Horsie 2
MXR Smart Gate

Cathbard

A dead OT won't fade out after 10 secs. That's just not the way they fail.
This sounds like an overheating component; possibly a rectifier, maybe a capacitor. My bet would be the rectifier (if it's solid state). Chances are that once you open it up you will see what has been overheating.
How you'd diagnose it would be a can of freeze if a visual inspection doesn't reveal anything. You gotta be mighty careful with freeze on a tube amp though, not a job for a beginner.


Edit: They do indeed have a solid state rectifier. I'd bet dollars to peanuts that this is suffering from the same design flaw as the early DSL's. ie an underrated rectifier. If that is the case then the solution would be the same - a bigger rectifier bridge that will take a heatsink - and a heatsink of course.

__________________
Gilchrist custom guitar
Yamaha SBG500
Telecaster
Ibanez Iceman
Roland GP-8
Quadraverb
Abbey Harmonic II
Marshall JTM45 clone
Marshall JCM900 4102 (modded)
Marshall 18W clone
Fender 5F1 Champ clone
Marshall 1960A

Cathbard Amplification