Poweramp Problem

sei046

Hey guys.
My Marshall 9100 poweramp is giving out very little volume and sounds a little fizzy. What you reckon? Tubes i woud imagine!?

Voodu Child

Yeah, the valves are your first port of call.

-=al=-

remember my tsl got busted up? ...needs new power tubes and a transistor replaced... thought id let you know.. so got a full set and rebias and replaced transistor... should have it back sometimes next week, just gota pay a good few €€ for it, =/


but check the tubes and the transistor thingy, but dont go getin electricuted or doped up or dying or somethin

Voodu Child

-=al=- wrote: »

remember my tsl got busted up? ...needs new power tubes and a transistor replaced...

You mean the screen resistor? When power-tubes blow, they often take the screen resistor with them, its a pretty normal failure. You should see the insides of my Boogies, they have a little cut-out on the PCB where the screen resistors are, so if they blow they won't melt/burn all over the board. Lovely little detail Never seen it on any other amp.

Pity to hear your TSL is going to cost a few quid Al.

-=al=-

well its first time i spend some $$ on it in 4 years, it was a long time comin i guess!

Its just the insides of amps is sometihn ive not messed with as of yet, so im pretty clueless wen it comes to that sort of thing