Peavey grid resistor specs. ?

[Kent S.]

Re: Peavey grid resistor specs. ?

It's going across the base of the tube socket ? When the amp is turned
on that tube become CHERRY RED !! What else might it be?

That sounds like that tube is drawing WAY to much current, check the bias to it, it sounds like the bias it's receiving is to high (not a low enough negative voltage ... ). You could have a problem along your bias line, not sure how the screen grid is done on that, heck the tube itself could be going bad. I'm going to defer to Jeff and Germ on this one, anything else you guys can think of? If you swap the two tubes, well two from the same pair does it do it in that socket, does the same tube do it in a different position. I wouldn't leave the amp running that long like that. Jeff, Germ?

Maybe I should buy a new multi-meter and meter the good one out?
If that one hasn't drifted off value to far? I'll have a Idea what the hell
it is.

That might not be a bad idea, even if it's drifted a bit you can still match it to a standardized value. ... That tube look indictates another problem for sure though.

[kmcguitars]

Re: Peavey grid resistor specs. ?

with those numbers, it seems to me, that is a 287K resistor made in the 38th week of 1981.

but, it might not be a grid resistor that you found burnt. good luck!!

germ

It's going across the base of the tube socket ? When the amp is turned
on that tube become CHERRY RED !! What else might it be?
1981 is consistant w/t the timeline of this amp, But it's odd that
ever other resistor in the amp is your STD. color coded ban type.
But the 2 going across the tube base are not? Did peavey use this
style? or are they replacements? ( This is getting confusing )
Maybe I should buy a new multi-meter and meter the good one out?
If that one hasn't drifted off value to far? I'll have a Idea what the hell
it is.

[lastwinj]

Re: Peavey grid resistor specs. ?

I just got a Peavey Classic VTX 2x12 combo. One of the grid resistors
is blown The main problem is I can't read the values on these's
resistors? I'm assuming they where changed before? Cuz' I believe
they are Military resistors? They are Black w/t a silver ban and 2 #s
2873 8138 ?? the other is burned. No chance finding a schematic
for free. Anybody have a clue?

with those numbers, it seems to me, that is a 287K resistor made in the 38th week of 1981.

but, it might not be a grid resistor that you found burnt. good luck!!

germ

[kmcguitars]

Re: Peavey grid resistor specs. ?

WOW! Thanks Jeff That was fast!

[Jeff Seal]

Re: Peavey grid resistor specs. ?

47k.....according to the schematic I have.

Jeff Seal

[kmcguitars]

I just got a Peavey Classic VTX 2x12 combo. One of the grid resistors
is blown The main problem is I can't read the values on these's
resistors? I'm assuming they where changed before? Cuz' I believe
they are Military resistors? They are Black w/t a silver ban and 2 #s
2873 8138 ?? the other is burned. No chance finding a schematic
for free. Anybody have a clue?