Korg Poly 61 Project Machine

“KORG POLY 61 Synthesizer Vintage analog. Needs care. Powers up but sound output is erratic. keys may be dirty. I don’t know.
Cosmetically in good shape. I think it could be brought back to life.

So. the sound output is erratic. In some patches you press a key and sound comes out, some you have to hit hard to make a sound. Some patches, when you hit a key the note holds. some keys and patches don’t produce a sound at all.”
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Korg Poly 61

“Works good. Some damage to bottom edges. Joystick is bent. Number 1 button sometimes re-triggers. See pictures.

This was Korg’s answer to the Roland Juno-60 and it looks like a Juno-106 but the Poly-61 is more interesting in many ways.” Click here to visit listing on eBay

Korg Poly-61M

” Korg Poly-61M completely refurbished, new oak chassis, new switches, Beautiful !

This synth was in very good condition, even before I refurbed it. I just wanted to create the best possible P-61M I could. It has never had a battery leakage, although I have updated the battery to a modern 3.6V cell battery. I refurbished the keyboard, cleaning it thoroughly piece by piece, and after polishing all the contacts, I applied the little carbon discs to each contact, as seen at sounddoctorin.com. It’s a brilliant fix, so now the keys play like new. Then I replaced all the program buttons’ switches with brand new ones, which fixes the annoying problem of not getting the buttons to work properly. Now, they are perfect. See the photo of the switch board with new switches. Then I built a brand new solid oak chassis for the synth, so as you can see, it is gorgeous, and now more solid than new. All pots lubricated, new knobs, all bolts and inserts for the chassis are new, and new feet. Nothing is missing.

This is a great analog synth, and all functions and features are working perfectly, and the sound is AMAZING. It is great having Midi on such a fabulous-sounding vintage synth, and this one has it straight from the factory. This is my finest work so far. Please read the feedback below from other buyers, to see how they have appreciated what I accomplished:” Click here to visit listing on eBay

Korg Poly-61M

“Korg Poly-61M completely refurbished, new oak chassis, new switches, Beautiful ! This synth was in very good condition, even before I refurbed it. I just wanted to create the best possible P-61M I could. It has never had a battery leakage, although I have updated the battery to a modern 3.6V cell battery. I refurbished the keyboard, cleaning it thoroughly piece by piece, and after polishing all the contacts, I applied the little carbon discs to each contact, as seen at sounddoctorin.com. It’s a brilliant fix, so now the keys play like new. Then I replaced all the program buttons’ switches with brand new ones, which fixes the annoying problem of not getting the buttons to work properly. Now, they are perfect. See the photo of the switch board with new switches. Then I built a brand new solid oak chassis for the synth, so as you can see, it is gorgeous, and more solid than new. All pots lubricated, new knobs, all bolts and inserts for the chassis are new, and new feet. Nothing is missing.” Click here to visit listing on eBay

Korg Poly 61 Project Machine

“Vintage Korg Poly-61 Keyboard Parts or Repair. Comes on and immediately plays a synthesizer sound. This is a common problem with these Korg Poly 61’s. Whether you’re looking for some parts for your existing Korg poly 61 or you want to throw in oscilloscope on this one and tinker around with it go ahead and place a bid! Sold as is for parts or repair God bless America!” Click here to visit listing on eBay

Korg Poly 61

“Excellent vintage condition as shown in the photos. Hard case shown in the photos is included in the auction. It has scuffs and some oxidation on the metal corners and latches. There are no dents or damage on the keyboard itself that I can see. I am listing it with the condition as “for parts or not working,” because I have no facility to test it. It belonged to my late father who was a professional musician. I obviously can’t ask him about it now. So, AS-IS, FINAL SALE, no refunds or returns on this item.” Click here to visit listing on eBay

Korg Poly-61

“This is an authentic early 1980s Korg Poly 61 analog synthesizer in great original condition and working near perfect , the only issue is one bass key sticks, the sticky key is mechanical and not electrical , otherwise an excellent example of the great classic Korg Poly 61.” Click here to visit listing on eBay

Korg Poly 61M

“This is Korg Poly 61 M Synthesizer . Did brief test with item with head phones , do not know much about these items , ask question . Preferably early in the auction . Item is large , shipping cost will be high . pick up option available . ” Click here to visit listing on eBay

Korg Poly 61

“This is an authentic early 1980s Korg Poly 61 analog synthesizer in great original condition and working near perfect , the only issue is one bass key sticks, the sticky key is mechanical and not electrical , otherwise an excellent example of the great classic Korg Poly 61.” Click here to visit listing on eBay

Korg Poly-61 Project Machine

“KORG Poly-61 Analog Synthesizer – poly 61 korg. Condition is “For parts or not working”. Collection in person only.

I brought this refurbished from eBay around 10-15 years ago. I believe it has had a new battery installed (I cant see any signs of damage on the motherboard) as well an additional memory bank – this can be toggled on and off using a switch (See pictures)

It works intermittently, times when it doesn’t work the volume is very low – sometimes it has to warm up. Not all keys work – maybe 10 of the 61 are dodgy (theres a delay) and the pots are noisy. The case shows wear and tear, especially on the feet and the back. The digital display and the number selector doesn’t work correctly – sometimes different numbers show – i.e. a 7 for a 1. Sometimes, pressing a parameter button will trigger a note – quite odd – sometimes a weird high pitched buzzing sound is played alongside a note. Defiantly a project for a someone who knows what they are doing and TBH I don’t have the time or patient to mess around with it. ” Click here to visit listing on eBay

Korg Poly 61

“Korg Poly-61 Analogue synth that I’ve had since the late 80’s. It powers on, all patches play and sound great. Internal Battery is good and has not leaked out at all! Cosmetically it is in very good shape for it’s age.” Click here to visit listing on eBay

Korg Poly 61

” Korg Poly 61 Refurbished and with a New Solid Oak Chassis, New Main PCB, Excellent Sound. Condition is “Seller refurbished”.

This is a special fully refurbished P-61 with some great improvements, in top condition, and it sounds and looks fabulous. As you know, the P-61 is a great-sounding analog synth, with a real analog audio signal path, but with the advantage of digitally controlled tuning. As a result, this synth has that great classic sound, and the tuning is very stable. This particular synth has been refurbished with these features of note:

– The main CPU board (KLM 509A) has been replaced with a brand new replica from Andrej Shenshyn of synthronics.de in Germany. (That cost me over $300 US – see the photo).
– I refurbished the keyboard, cleaning all the keys and contacts, and solving the issue of faulty contacts by putting conductive carbon discs on all the contacts, per the solution by Sounddoctorin.com (a great solution to faulty key contacts – look it up). I added the extra effort to glue thin plastic pieces to each of the keys’ hammer stem, to make the contacts activate even better. Now it plays with a nice light touch, with no dead keys.
– I removed all the tactile programing switches, and replaced them from a large pool of 68 used switches that I had, testing very carefully and selecting the best-working 17 switches to use. Now the program selection buttons work perfectly. Gone is the frustrating issue of hitting the buttons a bunch of times to finally select the program you want.
– I cleaned all the pots and switches with a spray lubricant, so they are all working fine with no scratching noise or jumping values.
– The KLM 508 voice board has been fully calibrated, and it is in good shape. I replaced one interconnect that was faulty, so now it is fine.
– I built a new solid oak chassis for this synth, because as you probably know, the original was made of cheap particle board that was one of the main complaints of the P-61. This is a beautiful replacement, built very solid and the panel and other parts fit perfectly, giving this synth a better-than-new look, and it will be way more durable than the original. I gave it an ebony stain, to go well with the gray panel, with a satin polyurethane finish for a classy soft look. ” Click here to visit listing on eBay

Korg Poly 61

“Synth powers on and does produce sound. However, the sounds seem to be random and erratic, and no longer correspond with the programs on a consistent basis. Also, it appears some of the keys may be sticking – not physically, but certain presets will produce sound even when no key is being pressed.

Synth was in perfect working order until I recently moved across the country and plugged it back in. My guess is that something internally must have knocked loose during transport. I did briefly open the panel just to see if there were any obvious issues such as an unsoldered wire, but nothing stuck out to me. Cosmetically, the synth looks great, with only some light chipping in the paint on one of the side panels (see photo). All buttons, keys and joystick work.

This would make for a great project synth for anyone interested in tinkering around with it.

I’m selling this synth “as is”. I described the problems as accurately as I could, so please make sure you’ve read my description fully so that you know exactly what you’re getting before purchasing it.”
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Korg Poly-61M

“Up for sale is this fantastically cool Korg Poly-61M which I purchased new an eon ago in the 80’s! It is now looking for a new home. There is the usual wear on the ends. All keys function properly, volume and other knobs work fine. I’ve used this keyboard infrequently over the years and so the key action is close to new. Rheostats toggles and switches work fine. Button pads 1-8 also work fine but sometimes one will double tap instead of single tap. This is likely oxidation on the contacts due to infrequent use of the instrument, it “should” correct itself with increased use or cleaning. This is a bulky (but not heavy) item, pickup only. Fantastic vintage synth sound and feel can be YOURS!!” Click here to visit listing on eBay

Korg Poly 61M

” Korg Poly 61M Vintage Analog Synth with MIDI Excellent working condition Nice!. Condition is “Seller refurbished”

Unlike many Poly 61s that are out there, this one is not all bashed up. The body is in great condition, with only a few minor nicks, and the synth is in very good working form. It has never had a battery leak, so all the functions work perfectly, and I did the following to it, to get it in top shape:

– I replaced the original battery with a CR2032, in a battery holder on a longer set of wires to make changing it easy.

– I totally refurbished the keyboard, cleaning all the keys, cleaning all the contacts, and adding carbon discs to the contacts, as per the solution by Sounddoctorin.com. (this is a great solution for faulty contacts — look it up.) That brings all the keys to perfect working condition.

– I removed all the tactile button switches and replaced them with brand new ones (a lengthy and tedious task.) That solves the annoying problem of having to keep hitting the program buttons many times until they work, or having them double count because of contact bounce. Now all the programming buttons work flawlessly. There is a photo showing the new switches(blue) on the two switch circuit boards. My soldering skills are quite sufficient for this work.

– I cleaned all the pots to eliminate scratching noises and jumping values.

– I replaced any of the screws that were missing, and all the feet are there, too.

This is a really great sounding synth, with a pure analog voice signal, and very stable tuning thanks to the digital control of the oscillators. And with factory midi, it is just a dream to own. It is fully tested, and loaded with sounds from a file I downloaded onto my phone from the internet. There are lots of those out there, and it is easy to do. And of course, you can create and save your own sounds.” Click here to visit listing on eBay

Korg Poly 61M

” Korg Poly 61M Vintage Analog Synth with MIDI Excellent working condition Nice!. Condition is “Seller refurbished”

Unlike many Poly 61s that are out there, this one is not all bashed up. The body is in great condition, with only a few minor nicks, and the synth is in very good working form. It has never had a battery leak, so all the functions work perfectly, and I did the following to it, to get it in top shape:

– I replaced the original battery with a CR2032, in a battery holder on a longer set of wires to make changing it easy.
– I totally refurbished the keyboard, cleaning all the keys, cleaning all the contacts, and adding carbon discs to the contacts, as per the solution by Sounddoctorin.com. That brings all the keys to perfect working condition.
– I removed all the tactile button switches and replaced them with brand new ones. That solves the annoying problem of having to keep hitting the program buttons many times until they work, or having them double count because of contact bounce. Now all the programming buttons work flawlessly. There is a photo showing the new switches(blue) on the two switch circuit boards.
– I cleaned all the pots to eliminate scratching noises and jumping values.
– I replaced any of the screws that were missing, and all the feet are there, too.

This is a really great sounding synth, with a pure analog voice signal, and very stable tuning thanks to the digital control of the oscillators. And with factory midi, it is just a dream to own. It is fully tested, and loaded with sounds from a file I downloaded onto my phone from the internet. There are lots of those out there, and it is easy to do. And of course, you can create and save your own sounds.

I have a good box for this, and I pack with great care, so it will travel well. Because it is a vintage item, I can’t actually provide a warrantee, or give a refund if you find it not what you like. I ship only to the continental US (lower 48 states.)” Click here to search for synths on eBay

Korg Poly 61

“Korg Poly-61 synthesiser (1983), good condition, but some keys not working. Synthesiser was fully working when it was put into storage and has been left untouched for a number of years. Recently tested and approximately 10 of the keys are no longer working. Some of these faulty keys occasionally work, so suspect it is the contacts that need cleaning. Recommend a full service by a professional including replacing the internal battery. The pictures are recent and all the other elements of the synthesiser appear to be working as expected.” Click here to search for synths on eBay

Korg Poly 61

“It powers up.. the keys work intermittently.. it does make sounds.. the sounds loop when playing .. it could be the usual battery leak on the board but this one had a newer disc type battery so I’m not sure.. I’m sad to say good bye to it but this repair is beyond my expertise. The keys are a bit scratched and dull looking and the last key is crooked but still functions.. the case is in pretty good shape for its age.” Click here to search for synths on eBay

Korg Poly 61

” Korg Poly-61 synthesiser (1983), good condition, but some keys not working. Synthesiser was fully working when it was put into storage and has been left untouched for a number of years. Recently tested and approximately 10 of the keys are no longer working. Some of these faulty keys occasionally work, so suspect it is the contacts that need cleaning. Recommend a full service by a professional including replacing the internal battery. The pictures are recent and all the other elements of the synthesiser appear to be working as expected.” Click here to search for synths on eBay

Korg Poly 61

“For a demo and description, see video below.

Short Story:

The synthesizer is in working condition. I am selling it because although it had been an ambition to own one, I do not use it enough.

All keys and buttons work, all functions work as intended. The battery changed two years ago. Cosmetically the unit is un good order but there are two small dents above the arpeggiator. The sound is what I would call gritty with the slightest hint of glitches when first powered on, this decreases after about 10 minutes.

This is the Korg 61 model without midi, and inside no extra anti-log board inside, this is integrated onto the KML509A main board.

It is also worth noting the marks on the keys have since been removed.

Long story:

I brought the synthesizer two years ago as a non-functioning unit with the aim of fixing it and enjoying it and achieved both. I am selling it because although it had been an ambition to own one, the novelty has worn off and I tend to play my newer ones more. I changed the battery (corrosion damage appeared minimal to non-existent), replaced a broken key, cleaned the key contacts and fixed a dent on the underside using Bondo (see video below). The dent was causing a short on the voice board because the base is lined with foil on the inside. This is now no longer an issue and all six voices work and are in tune with each other. As a result of the dead battery, I reprogrammed the presets using the cassette tape inputs on the keyboard.

All functions operate as intended and it sounds as it should and it sounds great with bass that can burn out one’s speakers if not used with care. I must mention, that when first powered on a very slight glitchyness is heard on some patches and this fades after about 10 minutes powered up. This issue will be inline with the age of the unit, which to my knowledge was never recapped. Therefore because of the age do no expect this to work forever without a service

In my first two weeks owning in on rare occasions some keys would go out of tune, power cycling it fixed the issue and eventually the issue went away. This did not reoccur after the first month and I assume, was related to the many years it went unused before I got it. That said, given the age of the unit I cleaning the key contacts and joystick is something I would recommend as I have not done it in two years and maybe if you decide it’s a keeper to take it to a professional technician so you can enjoy it for years to come.” Click here to search for synths on eBay

Korg Poly 61

“Korg Poly-61 Analogue- synthesizer. Needs repair- or for parts. Sometimes makes sounds when you press program buttons then keyboard. Loops the sounds. I think the common battery corrosion issue damaged the main board. A technician cleaned the board up but it still needs the leads to the main chip rebuilt and a few resistors replaced. Otherwise in pretty good shape.” Click here to search for synths on eBay

Korg Poly 61

” Korg Poly-61 synthesiser (1983), good condition, but some keys not working. Synthesiser was fully working when it was put into storage and has been left untouched for a number of years. Recently tested and approximately 10 of the keys are no longer working. Some of these faulty keys occasionally work, so suspect it is the contacts that need cleaning. Recommend a full service by a professional including replacing the internal battery. The pictures are recent and all the other elements of the synthesiser appear to be working as expected.”
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Korg Poly 61

“Up for auction is a Korg Poly-61 Vintage Polyphonic Synthesizer in non-functioning operating condition and nice cosmetic condition overall. I intended to restore this and started by replacing the leaking original internal battery. Unfortunately there was some damage done from the battery residue and some of the traces on the board will need to be repaired. I have taken a close up photo of the area near the new battery which shows the damaged traces. The other thing I did was replace all of the keyboard contacts with new LA Synth Co. contact strips. Because I own another Poly-61, I was able to swap out the keyboard to test it on my fully functional version. The keys all function perfectly with no issues.

As this unit stands now, it powers up and all lights function but the sound and behavior isn’t proper. The parameters don’t affect the tone the way they are supposed to and sounds will play when they aren’t supposed to and things of that nature. ”
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Korg Poly 61M

“CONDITION: perfect working order and cosmetically very good. It was fully restored and refreshed, replaced battery memory, front panel switches all by a certified tech. Functioning great!

SOUND: it’s gorgeous. It’s a beefed up poly six that goes under the radar but is magical” Click here to search for synths on eBay