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March 25, 2023, 06:27:38 AM

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The Newcomer's Forum / Re: are rows of knobs (pots, p...
Last post by Tassieviking - March 20, 2023, 09:00:45 AM
Do you have another amp that does have send/return jacks?
If so, run a cable from the Peavey Preamp Out to the return jack on the other amp.
That will check if the preamps work in the peavey.
The Newcomer's Forum / Re: are rows of knobs (pots, p...
Last post by Tassieviking - March 19, 2023, 11:01:15 PM
This might be the schematic for it, but I think it might be for a head unit and not a combo as it has speaker jacks and no speakers on the schematic.
Is it the small combo with 2 x 6-1/2 inch speakers you have ?
I think it has 2 x 10watt output so 20watt total ?
The Newcomer's Forum / Re: are rows of knobs (pots, p...
Last post by saturated - March 19, 2023, 08:37:58 PM
thanks guys I have tried a little bit of different things....trying to upload a pic of the back
I need to figure out how to do that and get back to you.
but all I have on the back is three jacks...footswitch, preamp out 1, preamp out 2

thanks again
The Newcomer's Forum / Re: are rows of knobs (pots, p...
Last post by g1 - March 19, 2023, 01:49:02 PM
Also try with headphones.  The phones jack usually also has a switching contact that disconnects the speaker.
Tubes and Hybrids / Re: Vox AC30 Jimi era
Last post by g1 - March 19, 2023, 01:47:37 PM
Do you mean the 1K5's at the grids of the power tubes (Pin2) ?
That would be strange for them to all burn, I would wonder if someone even tried the wrong tubes in there.
The 100R screen resistors usually burn from bad power tubes.
Tubes and Hybrids / Vox AC30 Jimi era
Last post by Psabin8951 - March 19, 2023, 07:40:38 AM
Hi all,
I have Vox AC30 jimi era Combo come to me with all of its 100R 1W grid resistors and associated 1W 1k5 resistors totally fried.
Obviously these will all need replacing and I will most likely uprate at the same time but would be the likely cause of the damage?
The Newcomer's Forum / Re: are rows of knobs (pots, p...
Last post by phatt - March 18, 2023, 05:08:58 PM
Hi and welcome,
Q does the amp have an effects loop?
If so plug your guitar directly into the RETURN socket and if you can hear sound then

bridge the Send and Return with a short lead and if that resolves the issue then the switch in the return socket is faulty.
It's a very common problem.
Do that first then tell the outcome, if no go then we look deeper.
The Newcomer's Forum / are rows of knobs (pots, poten...
Last post by saturated - March 18, 2023, 04:24:46 PM
I have an amp (Peavey Audition Chorus) that used to play and intermittently cut out (silence) and a while back it cut out for good.

I was thinking about checking continuity on each volume, tone etc pot

The Newcomer's Forum / hey guys Saturated here
Last post by saturated - March 18, 2023, 10:38:09 AM
thanks for letting me join!!!  I usually am a long time lurker before joining a forum but this place I wanted to start right away!  I was extremely impressed to say the least...just the old archived info threads are valuable and killer. Trust me I have been poring over them.
about me if anybody cares...Im old!  born in the 60s, love cats, metal, lawnmowers, and history.  im one lucky SOB and dont take the gift of every day lightly.  I wish I knew then what I know now.
but im not complaining.
anyhow I love the old Peavey amps..I have a rage 108 that probably nobody else would ever be able to bear to listen to but the old Peavey tone really hits home for me. 

I am really interested in electronics and have made it through about 3 1/2 books working all of the problems and everything.  Unfortunately I still cant fix anything and decided I would have to do some actual HANDS ON and bought some breadboards and exp electronic books for actual doing stuff.  So I can solve circuits for Kirchoffs law, talk about hole current and minority carriers and find resonant frequencies etc but cant make my silent Peavey Audition Chorus make a sound!

so I will make a thread about my quiet Peavey but meanwhile thanks for having me!!!

Amplifier Discussion / Re: Danelectro Nifty Fifty Mod...
Last post by Dino Boreanaz - March 18, 2023, 09:02:01 AM
Thanks for getting back to me, I was worried that I had missed something as I've never drawn a schematic from a board.

Your description is exactly how I had thought about it while considering my modifications ... part of the pot is in the feedback loop of the first stage controlling its gain while the remainder adds to R3 controlling the signal to the second stage.