i thinking about bidding on a marshall jcm on ebay but the person says "it will ever so slightly crackle if it is left on for a long time (a few hours at a time).it had a new set valves around 18 months ago that seems to have settled it slightly."

does this sound like a major problem?
should i stay well away?

many thanks
better shred than dead
the guys being honest, my amp crackles if i leave it on and unused for about an hour.

don't worry about it.
Belief is a beautiful armour but makes for the heaviest sword.
it will be fine. though you might want to put a new set of tubes in or at least put some money aside for some cause those are fairly old tubes.
[Cool Post-N00b of the Pedalboard Thread]
Guitars:Fender Am. Standard Telecaster, Gibson SG
Amp:Fender Blues Jr.
Pedals:EQD Dream Crusher->Polytune->PH-1r->Fulldrive 2->Barber LTD->Catalinbread DLS->CE-3->Strymon El Capistan->EQD Ghost Echo