Peavey grid resistor specs. ?

[Kent S.]

Re: Peavey grid resistor specs. ?

Also, is it just me, or does that top transistor look a bit burnt (brown discolouration) and the deformed look of the PCB at the leads? Try the chip docs site, as you may at least find the original manufacturer and maybe get a spec sheet ... although the site will probably show a replacement for the obsoletes, if you replace them, I'd replace them in a pair (why not? you want the other to go also...). Hope it helps.

[kmcguitars]

Re: Peavey grid resistor specs. ?

My bad, for not explaining...... TO-220 is a description of a transistor, not a part number and not a chip at all! (where did that come from?). The two transistors next to the ceramic resistors attached to the metal "plates" are the transistors I was referring to. Because they have the three legs on one side and the metal "tab on the other.... this is a TO-220 transistor, most of the VTX's had the TO-3 transistors, which look entirely different (round "can" looking transistor's)....

Your actual grid resistors are the 1.5k (brown, green, red and either gold or silver), but a better idea would be to turn the amp on without the 6L6's and check pin 5 for about 15v....

JS

AH HA !! I think I see the problem!! The 3 leged tranny on the metal plate
has a broken leg !! Looks like someone droped a bead of solder on it.
It's the one on the right? (Are they cris crossed? ) I couldn't read the #
on it ( it's 3:30 my eyes are bugg'in) Is this the part that can't be found?
Thanks again YOUR A AMP GURU IN MY BOOK !!
GOOD EYES KENT !! Just saw your post you nailed it !!

[Kent S.]

Re: Peavey grid resistor specs. ?

Is this the part that can't be found?

Obsolete, maybe still available ... Marked in Red, although you can't read it clearly. Check Chip Docs.

[kmcguitars]

Re: Peavey grid resistor specs. ?

Thanks Again Jeff and Kent !! The chip part # is 5884. Now if I understand
this correctly TO-220 is the case style? 3 lug w/t a hole to bolt to
the heat sink. The T-03 5884 is round case and can not be bolted
So it can't be used??? Thanks for the link Kent, I'm still waiting for
a responce. I searched the internet high and low for a 5884 in a
TO-220 case....NOBODY HAS EM' I whent to mouser's site ,they
have part #610-2N5884 But my browser kept frezing when I tried
to go to the spec. sheet. But it's safe to assume it's not the 220
case.( that would be to easy) hopefully chip Dr. come's up with
a sub. If not anybody need a pair of Scorpion speakers ?

[Kent S.]

Re: Peavey grid resistor specs. ?

Thanks Again Jeff and Kent !! The chip part # is 5884. Now if I understand
this correctly TO-220 is the case style? 3 lug w/t a hole to bolt to
the heat sink. The T-03 5884 is round case and can not be bolted
So it can't be used??? Thanks for the link Kent, I'm still waiting for
a responce. I searched the internet high and low for a 5884 in a
TO-220 case....NOBODY HAS EM' I whent to mouser's site ,they
have part #610-2N5884 But my browser kept frezing when I tried
to go to the spec. sheet. But it's safe to assume it's not the 220
case.( that would be to easy) hopefully chip Dr. come's up with
a sub. If not anybody need a pair of Scorpion speakers ?

Find (from Chip Docs) the original manufacturer of the part, go th their site, and plop in the number, they should present you with a suitable relplacement ... On some TO-220 cases the part that contacted the metal was a used as a heatsink, and nothing more ... hence the heat sink that it is attached to ...However I can't say that for all, but it's a good bet that that is all it is, even if used as a ground plane reference ... Again I can't say for sure ... but odd are ...

[lastwinj]

Re: Peavey grid resistor specs. ?

the power section must be doin a grounded grid cathode drive design. it isn tunheard of in the HIFI world. something like that.

remember, Peavey uses alotfo house marked parts, so the 5884 on the chip, is probably not the correct designation.

looks like a cool amp to take apart, though. mwuahahhaha!!!

germ