Peavey 5150, the OG, the GOAT

[HomespunEffects]

I tore down the EVH tonight. The problem turned out to be the transistor that mutes the pop that happens when you switch channels. It identifies as two diodes rather than a JFET.

J174s are obsolete so i put in a J175. I know it’s working because it’s friggen LOUD again.

The main board is kinda flimsy and judging from all the jumpers it must be cheaper to hire prison labor than to pay for a double sided PCB.

 

[HomespunEffects]

That transistor must have been going bad for a while now. I can’t even get the Post Gain above 3 without tearing my head off now.

 

[HomespunEffects]

Well, putting the amp back in the head shell, I mucked up two of the cage nuts. I need some fresh ones. I believe they are plain old 10-32s.

Oh, I swapped some preamp tubes and it’s much less noisy now.

 

[joezlo]

I had the pre amp valve schematic for that amp and it made all the difference when knowing the gain staging in replacing preamps.

I even had an old thermostat westinghouse AX12 in mine at one point. (That was colorful)

Here's an off question, does anybody know where to find the baffle screws for those cabs? I seem to be missing a bunch and have gotten dead links for replacements so far.

 

[HomespunEffects]

I had the pre amp valve schematic for that amp and it made all the difference when knowing the gain staging in replacing preamps.

I even had an old thermostat westinghouse AX12 in mine at one point. (That was colorful)

Here's an off question, does anybody know where to find the baffle screws for those cabs? I seem to be missing a bunch and have gotten dead links for replacements so far.

Are you talking about the 21st thing on this list?

Peavey Amp Hardware

Peavey Amplifier and Pro Audio Parts

www.amprepairparts.com

 

[la szum]

Dumb is dumb squared!

 

[HomespunEffects]

View attachment 46854

Dumb is dumb squared!

Uhhhhhhhh. That’s a special block letter with a signature.

 

[HomespunEffects]

I keep the Mids on 10.

Mids on 10 is not a joke, guys.

 

[joezlo]

Are you talking about the 21st thing on this list?

Peavey Amp Hardware

Peavey Amplifier and Pro Audio Parts

www.amprepairparts.com

Nah, those are for mounting speakers to the front baffle.

What I'm looking for is what holds the back baffle on the cab to keep the low end tight. (My baffle warped without me knowing when it was in storage and the screws fell out, lost forever)

They kinda have a round washer head with a self drilling tip.

I'm very lost on this one, and that's usually not my Motus operandi