Serious issue with dsl100 need help

[kyehatton]

Hi guys I'm looking for some advice about my Marshall dsl100. A few days ago I turned it on and it was making a zapping popping sound 2-3 times every 5 seconds and as I left it on longer the zapping/popping would get more frequent, now today I left it on for a long time to see If it would stop and eventually it did but I started to have a massive drop in volume on the low output and it would get worse and now there is nothing. The high output still has sound but there is a volume swelling and it just doesn't sound right at all... someone told me that if it was a tube I would still have sound... do the different outputs use different tubes? Cos I can't understand how I don't have any sound in the low and bad sound in the high output... any help and advice would be much appreciated
Thanks
Kyehatton

 

[Rozman62]

Dont understand what you mean by low and high output. Change power tubes one at a time then preamp tubes if needed. Clean all sockets and jacks with Deoxit. Grab a multimeter and check the bias. Rule out the things you can do yourself before taking to a tech.

 

[Purgasound]

Sometimes the best and most helpful advice you can give is "take it to a tech".

 

[rocker68]

What generation DSL 100 ? JCM 2000 ?
DSL H ? DSL HR ?

 

[Dogs of Doom]

zapping/popping is usually an indication of an arcing electrical short.

could be a tube, but not necessarily. Arcing inside an amp is dangerous & running it like that can only cause more damage.

What is Arcing? - Definition from Safeopedia

This definition explains the meaning of Arcing and why it matters.

www.safeopedia.com