“Korg Poly-800 Vintage Synthesiser comes with original owners manual. Lovely keyboard I inherited from a family member, hardly played and it does turn on HOWEVER IT IS BEING SOLD FOR SPARES as it does not currently work properly. The pitch bend PCB is corroded completely and the battery compartment is corroded too. The pitch bend unit from what I can tell . . . left/right should bend the pitch up/down . . and up/down should apply modulation . . . at the moment the up/down part is basically always on, so the sound aways wobbles, and left/right doesn’t work at all when pushed left or right, but when left in the middle it sort of wobbles around, as if you were constantly tapping it just enough to get the pitch to jump around a little. I suspect the only way to salvage this would be to find a replacement Korg 800 pitch bend unit but there’s NO guarantee the keyboard would even work after that. ” Click here to search for synths on eBay
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“Korg 707 FM Synth. Condition is For parts or not working.” 
“Korg Monopoly . Great condition, sounds amazing and plays beautifully. Haven’t got the space so has to move on!” 
“Korg Poly 800 Vintage Synthesizer
“Korg Mini-Korg 700s Vintage Analogue Synthesizer Rare Serviced
“Up for sale is my Korg MS2000b. Condition is Used but very good for it’s age. Always used in my smoke free studio and taken care of.” 
“All the keys, buttons, joystick, and outputs are completely operational. It needs a new battery to hold sounds (note the “Init Prog” reading on the screen), otherwise you would need to load sounds each time it is powered up. I don’t believe the floppy drive is operational, but that’s an easy replacement as well. The screen backlight is completely dim. This keyboard toured with a national touring act under some very talented fingers. It’s seen some action, but is ready for a new home and new talent. ”
“Korg RK-100 1980s Black keytar remote keyboard – original wood . Condition is Used. Shipped with FedEx Ground or FedEx Home Delivery. There are quite a few surface scratches. All keys and buttons work except the # 8 and shift button.
“Korg Polysix 61 key synth . Condition is For parts or not working. Shipped with FedEx Ground or FedEx Home Delivery.” 
“KORG PSS-50 Vintage Super Section. Grab this analog gizmo to add some nice retro 80s cheese to your mix. Features analog drum beats, bass lines, and chord accompaniment. This unit is in excellent condition. Made in Japan. Free shipping in North America.”
“Good condition. Missing some knobs (5) otherwise in great shape. ”
“Korg Poly 61M. The battery has just been replaced, it is fully loaded with the factory preset sounds. Has been completely tested and everything works (Midi, tape interface, all voices both oscillators, all filters, everything). Includes hard case and original case candy (warranty card, audio cassette of presets and Korg bumper sticker). The case has some tears in the tolex, but the keyboard itself is in very good condition as the pictures show. Shipped with UPS Ground.” 
“From the classic golden era of collectible analog synth drum machines (TR808 & 606 etc etc). First released in 1982 this has a very fat warm analog sound. No power supply, but fairly standard connection. Needs fixing.” 
“Used but in great condition. Versatile synth. Only selling because of space restrictions.”
“Korg MS2000 Analog Modeling Synth in great condition only used in a home studio. Condition is Used, but very good. Dispatched with 48 Hour courier.” 
“KORG POLY-800 Analog Polyphonic Synth w/ Filter Mods and PSU. Condition is Used.
“Korg MonoPoly With Midi. Condition is Used but in excellent condition bar one slight scuff on the wooden cheek (see images) works as it should with zero issues. ” 
“Tested and working Korg EX-800 analog synthesizer. See photos for condition. All of the oscillators are working. All of the LEDs are working. All of the buttons are working, however, some of them need a firm press now and again. The original factory patches are loaded and ready. Comes with Korg PSU.” 
“[Status]
“KORG MS2000R synthesizer in perfect working order and excellent cosmetic condition. A couple minor abrasions (see photos). Great manual synth for learning synthesis, I love this thing. It has a lot of capability.
“Additional Info: This Korg is in good physical condition. The pitch bender/modifying stick is missing the top knob and we are assuming it may not function properly. Likely the keyboard needs a little cleaning as it has been sitting for a while. When the keyboard powers up it shows “battery low” internal. It does come with a power supply included.”
” Vintage Korg 01/W FD Music Workstation / Synthesizer W/ Original Manual. Condition is Used.
“Korg Polysix analogue Synthesizer. Around half of the keys and most of the sliders/ knobs work and can still be used- the broken keys could probably be fixed with new plates or the keyboard could be salvaged for parts
“Korg sq-1 sequencer. Used working condition.” 
“This particular piece is functionally and aesthetically in near mint condition. (Could use a gentle cleanup after years of sitting in a rack). Powers up perfectly. Includes power adaptor and original Owner’s manual.” 
“This keyboard powers on, lights up, and digital display displays numbers, but it does not make any sound. Also the first key is missing a tab as can be seen in pictures. Therefore it is being SOLD AS IS – FOR PARTS ONLY. No Returns will be accepted.” 
” I’ll start by saying, the new versions are def cool, but not even close in raw tone. The original is still the real deal. These are quirky, cool synths… the best of Japanese Filters for sure. Gritty, gnarly and more. Two OSCs of sweet tone. Notice there is no screw on the VCA section panel.. this is an original 35 filter version.. known to be much more aggressive in tone and much rarer than the latter filters : )
“This synthesizer is in very good condition for its age. It has has some minor wear. It has been tested and is in perfect working condition. The only minor flaw is that a little extra pressure is required on the “7” button to trigger it. The synth comes with its original manual (in Japanese), power supply, brand new Korg PS-1 Pedal Switch (w/ original box), and a molded Korg soft case.” 
“Korg RK-100 1980s Black keytar remote keyboard – original wood . Condition is Used. Shipped with FedEx Ground or FedEx Home Delivery. There are quite a few surface scratches. All keys and buttons work except the # 8 and shift button.
“korg poly-800. Condition is Seller refurbished. Shipped with USPS Priority Mail.
“Good condition. Missing some knobs (5) otherwise in great shape. ”
“Superb condition with new backlight and new backup battery.
“great condition—tested all works great—easy to use—includes ac adapter —all buttons and keys and sliders all work great” 
“Korg DDM-110 Super Drums Digital Drum Machine.
“This auction is for a KORG POLY-61M key synth vintage analog keyboard with MIDI “FOR PARTS”. I put it for parts because there is no sound coming out of it. The keyboard turns on. Every time you press a key it sounds like a tick. Every time you press a key the diodes on the board(508A) inside light up. I tried to find out what chip,diode,capacitor or resistors were bad but it was an impossible task for me because I don’t have the right equipment to test it. It seem like they spilled something on it. I took out the board(509A) and cleaned it out but to no avail. So I’m selling this AS-IS. From what I have been reading its a pretty simple fix. Please look at the pictures for more details and condition. Thanks and good luck.”