Anyone know where to get schematics for Peavey amps?
Peavey Mark III Bass Head, if it makes any difference. In trying to find the low-level problem I dumb-thumbed, and dragged a scope ground across a power transistor -- and most likely fried it. It's not my amp!! So now I have at least two problems to diagnose and fix.
And it's a house-numbered transistor, for my sins.
So, if you know how to get one's hands on schematics for these, I'd love to hear it.
Thanks.
nd
now
ttdesign.com
Did you post of SE.repair too?
George H.
I have a Peavey 800 watt amp that I wanted to modify. I called Peavey, and they sent me a schematic. Nice guy helped me, heavy Mississippi accent.
John
Remember my comment about protecting chips from the oaf with a scope probe? ;-)
See if one of the schematics at
-Mark Freeman
"Tim Wescott"
** I have a torn and tattered one here.Watch out for open 2 kohm 5W cement resistors.
The TO3 devices are all MJ15003s.
The TO126 pack drivers are MJ340s and MJ350s.
... Phil
No, but I've probably made that comment before myself.
Thank you Phil.
The first question that I was going to ask myself when I got the schematics was what might those house-numbered transistors be, the second was going to be what the common problems with this amp were.
The third, of course, was how to keep myself from _ever_ dragging a scope ground across another hot lead, ever, but I think the answer to that involves never getting close to powered equipment with a scope, and that's too high a price to pay.
** I like to leave the earth clip hanging onto the back end of the probe most of the time. The scope is grounded and so are most pieces of equipment so you do not need it.
With Class 2 equipment and things that run on AC adaptors, you can run a clip lead to the chassis from any convenient earth available and get the same result.
... Phil
I get used to mixed analog/digital circuits, where grounding the scope lead as close as possible to a signal is essential if you don't want the digital stuff messing with the analog stuff.
In fact, I'm working in my lab right now (not on the Peavey), and the last thing I did before taking a USENET break was to clip a ground lead on and see a whole bunch of digital fuzz disappear from an analog signal.
Different equipment, different habits.
Try this site.
The manual for your amp is here:
I bet if you email Peavey, they might be able to email you a schematic in PDF.
I searched google for "peavey guitar amp schematic" I got about 1000 hits.
Have something to add? Share your thoughts — no account required.
Ask the community — no account required