Thank you so much for zooming in on the fuses. I just got an older 1978 Mark III that uses the same board, but doesn't have the amp value printed on the board. All the fuse tabs were broken off and I couldn't find any information on the internals anywhere.
Had one years ago. My first "real bass amp" Really colored the tone of the bass (in not a good way) and the DDT Compression was terrible in IMO. Was so glad to replace it with an SWR when they first came out. Way better sound and I still have and use it on occasion.
Yeh the compressor is the only thing that bothers me on this thing. It's a cool feature but the implementation leaves much to desire. Oh well that's what's modding is for :D
Great clip..i have one of these since I bought it in '85..the only main problem I had a few years later was the unit cutting out and the DDT light engaged..by banging on the top it came back on for a bit long enough to finish the gig..turns out a circuit board connector had come loose..probably one of those you are looking at in your clip..Leslie
Are you dutch? Cool amp, i'm working on one now that's been put away working 10 years ago by it's previous owner and now it won't power on although none of the fuses have blown, i suspect C34 &35 (the big Blue capacitors right after the full wave rectifier) are shot after 38 years.
Yup very Dutch :P It's an absolutely fantastic beast with so many neat features as well. I don't think I could ever use a different amp haha. And yeah it's very often capacitors that die, especially at that age!
Hahahahah yeah me too, 99% of the time you can tell right away if someone is a Dutchman speaking english. Yeah these things were way ahead of their time in terms of features, the parametric eq and the crossover function especially, auto mix channel is cool too. Yeah i know, it's sad that people discard these amps when something other than a fuse goes because they think it's old and solid state but everything has a life span and they're not that expensive to replace so we'll give it a shot fixing this behemoth. Maybe i'll turn it into a video like you did but i digress, thanks for this video, i enjoyed it a lot.
I have one of these that was given to me. It powers up but next to no volume and what comes out is distorted (when I turn the gain controls all the way up). Input jacks work and line out to another amp works meaning all the controls work. Seems like a power issue. Is it worth taking somewhere for a repair?
Either the power rail to the speaker amplifier or the speaker amplifier itself is at fault (power transistor perhaps). Probably easy fix? Defo worth it, these things are beasts. Been very happy with mine for years now.
You need the Peavey footswitch, which connects to the DIN connector on the right side (under the logo). Sorry for the late reply, didn't see the notification x3
From what I remember it's fixed. Looking at the manual it looks like they build multiple versions for the various mains voltages used across the globe.
@@rot_studios Thank you, sorry, maybe I did not understand well, I would like to know if the peavey musician mark III for guitar, has a reverb tank or is digital, I appreciate your response in advance
I got mine for 150 dlls and it's by far my fav bass amp that I've owned, I recommend it to anyone from starters to advanced players
Nice! :D
Thank you so much for zooming in on the fuses. I just got an older 1978 Mark III that uses the same board, but doesn't have the amp value printed on the board. All the fuse tabs were broken off and I couldn't find any information on the internals anywhere.
Oh gee, yeah that's quite the conundrum :D
Glad to hear my video helped!
Thanks for your video post. I've been considering buying one locally, and I'm likely to go buy it this week thx to your input.
Awesome! Go for it, you'll certainly not regret it!
I got one of these at the auction........ just needed general maintenance. Tough amps. Good stuff.
Have fun :D
Good demo! I recommend these highly for it's wide sonic range- especially for guitar! I have two.
Thanks, for guitars as well? Never tried this thing with an guitar... guess I should :)
That thing is in great shape. BTW, these things sound Amazing with the right guitar rig
Yep and it's still going strong. Love it. :)
Had one years ago. My first "real bass amp" Really colored the tone of the bass (in not a good way) and the DDT Compression was terrible in IMO. Was so glad to replace it with an SWR when they first came out. Way better sound and I still have and use it on occasion.
Yeh the compressor is the only thing that bothers me on this thing. It's a cool feature but the implementation leaves much to desire. Oh well that's what's modding is for :D
Great clip..i have one of these since I bought it in '85..the only main problem I had a few years later was the unit cutting out and the DDT light engaged..by banging on the top it came back on for a bit long enough to finish the gig..turns out a circuit board connector had come loose..probably one of those you are looking at in your clip..Leslie
Thanks :)
Haha, well at least you managed to finish your set!
$200 for the head ('87) and a BW15 cabinet ('89) three days ago!! $400 shipped for a '92 Foundation bass though...
Nice deal on the amp :D
Do you know the size of the tool you use at 26:55 ?
Thank you for the video its very interesting
I measured it and it's 13mm (doesn't have any label on it so had to measure).
HI any chance i can see the power amp board circuit side?
Its a temperature fuse
Are you dutch?
Cool amp, i'm working on one now that's been put away working 10 years ago by it's previous owner and now it won't power on although none of the fuses have blown, i suspect C34 &35 (the big Blue capacitors right after the full wave rectifier) are shot after 38 years.
Yup very Dutch :P
It's an absolutely fantastic beast with so many neat features as well. I don't think I could ever use a different amp haha. And yeah it's very often capacitors that die, especially at that age!
Hahahahah yeah me too, 99% of the time you can tell right away if someone is a Dutchman speaking english.
Yeah these things were way ahead of their time in terms of features, the parametric eq and the crossover function especially, auto mix channel is cool too.
Yeah i know, it's sad that people discard these amps when something other than a fuse goes because they think it's old and solid state but everything has a life span and they're not that expensive to replace so we'll give it a shot fixing this behemoth.
Maybe i'll turn it into a video like you did but i digress, thanks for this video, i enjoyed it a lot.
what was the probel with it that it needed repair?
Crackling pots (as mentioned in description :) ).
@@rot_studios i have ine on the bench voltage on the output ...the output tested good found some scorched in the pow amp pre amp área...
That's a heat sync. I wouldn't have the cord around it while operating
I never do, though the amp has yet to actually get hot :P
I have one of these that was given to me. It powers up but next to no volume and what comes out is distorted (when I turn the gain controls all the way up). Input jacks work and line out to another amp works meaning all the controls work. Seems like a power issue. Is it worth taking somewhere for a repair?
Either the power rail to the speaker amplifier or the speaker amplifier itself is at fault (power transistor perhaps). Probably easy fix?
Defo worth it, these things are beasts. Been very happy with mine for years now.
@@rot_studios Great...thank you for your advice and quick reply!! Loved your video!
QUestion, how do you switch from channel a to b? I just bought one of this and it keeps both A and B leds on all the time. Thanks
You need the Peavey footswitch, which connects to the DIN connector on the right side (under the logo).
Sorry for the late reply, didn't see the notification x3
Is there any way to change the voltage or is it fixed?
From what I remember it's fixed. Looking at the manual it looks like they build multiple versions for the various mains voltages used across the globe.
ah, guess I have to get a 120v 60hz to 240v 50hz adapter also then!
friend how can i check the transformer
What is the issue you are having?
1/2 inch socket to undo the 5 hard to reach bolts very good vid
what is your mail I have a questions what is the serial number of the preamp transistors?
Hello, can someone tell me if this team has digital or analog reverb, thanks
There's no reverb in this, it's a bass amp after all :P
@@rot_studios Thank you, sorry, maybe I did not understand well, I would like to know if the peavey musician mark III for guitar, has a reverb tank or is digital, I appreciate your response in advance
Porqe no tradusir en español
I do not know a single word of Spanish I'm afraid :P
You do not know nothing
I indeed know a thing.
Your title is incorrect. It show be tear down. I saw nothing on repairs or service to it. Waste of my time!!
The repair part of it is your damaged ego :V