05.01.2021

Echoplex Ep 3 Serial Numbers

Maestro Echoplex EP-3 tape echo - $1150 (Philadelphia) Super clean, fully functional EP-3 tape echo unit for sale. The entire bee movie script. Available for local pickup only - please email to arrange a meeting. $1150 cash or best offer. If you're looking for an authentic vintage tape delay, the Maestro Echoplex EP-3 Solid State delivers with its '70s sound. I'm finally a proud owner of an Echoplex EP-3. It will need some work but things are going good so far. I'm a bit confused about the production date of my Echoplex. It seems to be some sort of transition model between the EP-3 and EP-4 as it already has the compressor board built in. As far as I know the compressor board came up in 1977. Echoplex EP-3 EP-4 serial numbers. Everything between your guitar and amp. Moderators: VelvetGeorge, BUG. My Ep-3 dates at 1976- serial #28255. Units built for Harris Teller carried an Echoplex badge that omitted the Maestro name. In 1984, Harris Teller bought out the Echoplex name and the stock of Echoplex parts from Market Electronics. Harris Teller used the back stock to assemble reissues of the EP-3, EP-4, and tube EP-2, which they designated the EP-6t.

Echoplex Ep 3 Serial Numbers Lookup

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Echoplex EP3 repair

Echoplex Ep 3 Serial Numbers And Double Swastika

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AuthorTopic: Echoplex EP3 repair
Patrick Lyons

From:
Tennessee, USA
Posted 9 Mar 2018 11:00 am
Hey I recently got an EP3 that wasn't working and I took it to a shop in Chicago that said that they repair these. The repair guy said that there is no schematic for this one, there is no ser #, and there are three boards instead of 2, so now he doesn't know how to fix it, because the previous owner had someone rewire it, and wants to charge me $140 for his time.
Does anyone anyone have s a schematic for this, or know how to fix them? Any help would be appreciated, thanks
One last thing, the repair guy asked that I put this text up here and I will add it to the original post as well
'You bought an EP-3 that was hacked and rewired by someone and the unit doesn’t work. I took it into a service center and they informed me that this version EP-3 has no schematic online. Does anyone have a schematic?'
Thank you

Last edited by Patrick Lyons on 12 Mar 2018 10:52 am; edited 3 times in total
Charlie Hansen

From:
Halifax, NS Canada and Various Southern Towns.
Posted 9 Mar 2018 12:47 pm
Is this of any use to you?
https://www.manualslib.com/manual/1011631/Maestro-Echoplex-Ep-3.html
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Bill Sinclair

From:
Hagerstown, Maryland, USA
Posted 9 Mar 2018 2:50 pm
$140 to admit that he doesn't know how to fix something? Sheesh. That aside, he may just be confused about the boards. Page 26 of the document Charlie linked to shows the board with the T2 transformer (that black square thing - bias oscillator?) on the side of the panel with the power transformer and motor. On yours it's on the other side of the panel, with the other two boards. Pages 27, 28, and 29 are the schematics for three different serial number sequences of the EP-3. He should be able to figure out which one matches your unit.
If it's a guitar amp repair shop, there's a good chance that they haven't had much (or any) experience biasing a tape head. It's been 40+ years since I've done it so I'm afraid I wouldn't be any better.
Michael Butler

From:
California, USA
Posted 9 Mar 2018 7:56 pm
patrick: there is an echoplex group on facebook. you may want to join to gain for further information. i have two ep3s but neither look like that. yours may be the ep4.
play music!
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Godfrey Arthur

From:
3rd Rock
Posted 9 Mar 2018 7:58 pm
Here's a vid clip showing some repair tips:
https://www.youtube.com/watch?v=SSgmkG6XXqc
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Michael Brebes

From:
Northridge CA
Posted 10 Mar 2018 8:41 am
What is wrong with your Echoplex? It's a relatively simple circuit and easy to repair. The biggest repair problem I have had with these is replacing mechanical parts that are bad or heads that go bad. I can fix it for you, if you want to send it to Los Angeles, and it won't cost you $140 for me to tell you I can't fix it. That's the sign of someone that doesn't know electronics very well, what we used to call 'tube jockeys' in the 60's who thought they could just swap out tubes until they found the problem in an old TV.
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Aaron Jennings

From:
Montana, USA
Posted 10 Mar 2018 4:10 pm
If that is an EP-3 it is one of the models with a compression board in it. These were only in some of the EP-3s and many people bypass or remove them..
Others do not!
ajm

From:
Los Angeles
Posted 11 Mar 2018 11:04 am
It sounds like you have two problems.
1) You have an EP that doesn't work.
2) You have someone that wants to charge you $140 for doing nothing.
It sounds like Michael Brebes can fix the first one for you.
The second one? Well......
Jim Sliff

From:
Lawndale California, USA
Posted 11 Mar 2018 1:02 pm
1. Find a new tech.
2. See #1
ANY competent amplifier tech can repair the electronics on ANY device like that - schematic or not. Some may not be able to deal with mechanical issues, but the electronics are solid-state electronics, not digital 'chip' devices where certain functions may not be obvious.
And no reputable tech charges for 'no work performed'. They accepted the unit in good faith, claiming competence - and didn't perform.
You owe them exactly $0. No bench charge. No 'flat rate'. They didn't do anything.
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Stephen Cowell

From:
Round Rock, Texas, USA
Posted 11 Mar 2018 9:37 pm
My EP-3 had a bad input FET.. I believe the exact part is obsolete. I used a plain-jane RatShak JFET and re-biased it by changing the source(?) resistor.. easy to do. That looks like a real clean unit, keep it and cherish it! I did a whole bunch of crazy things to mine, it's a great platform for modding.
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Patrick Lyons

From:
Tennessee, USA
Posted 12 Mar 2018 10:08 am
One last thing, the repair guy asked that I put this text up here and I will add it to the original post.
'You bought an EP-3 that was hacked and rewired by someone and the unit doesn’t work. I took it into a service center and they informed me that this version EP-3 has no schematic online. Does anyone have a schematic?'
Thank you
Echoplex Ep 3 Serial Numbers
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Ep-3 chinaSerial
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Selling my Vintage Maestro EP3 echoplex. Unit works great with no issues current tape cartridge is in good shape and works well. Unit is clean, 100% functional, quiet while running as well as quiet as an analog tape echo gets into an amp. I have four new replacement tape cartridges purchased directly from Mike Battle (guy who invented the echoplex) that goes with the sale. I get it out from time to time to excercise it and keep the caps from drying out. For you echoplex guys the serial number is 11,6XX which makes it a later model EP3. I'm just paring down my collection.
I would like a local Chicagoish deal out of my fear to ship this so I will try that first. I will consider shipping this as I am sure I can pack it to survive. Hit me up.
$600.00