“Battery compartment door is missing. It powers up intermittently and display shows “Load” when it powers up.
Cant seem to get a data dump of the factory sounds to load maybe it needs a new power adapter.
It has the Moog Slayer mod done with a 1/8” jack for cv control over the frequency knob, great for external control.
It has had the battery back up mod done so no need for the 6 c cell batteries. ” Click here to search for synths on eBay
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“Up for sale is a (1) vintage Korg VCF FK-1 Synthe Pedal filterbox with the expression pedal, cable to connect them with each other, owner’s manual and original box. The most complete package you can get. It’s in good working condition and sounds superb! Cosmetically the FK-1 and pedal are in near mint condition with only some minor scratches on the front panel of the filterbox and little wear and tear (see photo’s). The original box is very damaged and the manual is in used condition. The filterbox is an original 220v version with European plug installed and the serial number is: 770172.” 
“Excited to offer this great deal on a KORG MS 2000A real beauty with a couple of scars but, that makes her cooler. In good working order just has one broken key which I can have repaired by the top gear tech repair guy in Chicago for $50.00 . The mic /. line switch is stuck on mic great news for the vocoder! Also one input has been repaired and is now sturdier than the original design. A great Synth for Bass tones and sound manipulation / modulation. Plug it in a you are good to go A power supply can be purchased for less than 10 bucks!” 
“Unit is in good shape, includes power cable. ” 
“Keyboard is in good condition. Has label taped on it for the midi in and out. Not sure if this is standard on these keyboards… Physically the keyboard looks pretty damn good in my opinion. Don’t see any major scrape or brakes. There are two open screw holes on the bottom. I do not know if this is for something to be added on or if two screws are missing. Comes with quarter-inch cable, MIDI cable, sustain pedal and stand. Keyboard stand has rust damage on it. Feels sturdy and has the pads on the bottom and top.” 
” Korg M1/ ….. audio autputs produce an noise when turned ON, if you know how to fix it that problem would be much better for you.
“Up for sale is a vintage korg pedal.
“Does not power on. Body was opened to look inside. Maybe you can fix it? I don’t know how.” 
“Tested – Fully Functional
“I have been the sole owner of this synth and have kept it in excellent condition. I have tested every slider, knob, pot, and key, and everything is fully functional! When I opened the case to inspect the components, I was pleased to see that it was nearly spotless. (See pics) The battery is old but in great shape and when I put it on the meter, it maintained a steady 3.3 volts. (Brand new it is rated at 3.6 volts.) All patches are intact and fully functional. The carbon contacts that sit under each key had oxidized with age, as would be expected, so they have been restored and all 61 keys work perfectly. I also connected the MIDI input to my Korg M1 and was able to trigger the Poly-61 as intended.
“Reasonable condition. A few scratches and a small dent on the top casing, but works OK.
“Yamaha SY55 synthesiser.
“Yamaha DX100 keyboard. In excellent condition and woking order.
“Previously owned.”
“This unit is in very good condition, has not been on the road, and has spent its life in a smoke free/pet free/kid free home. I am the original purchaser/owner. I enjoyed using it, but never did use it heavily. This sat in the closet the last 20 years since I use a different keyboard. It’s in very good condition, minimal scratches or scuffs, and even still has the slide-out preset guide card. (see pictures)
“Clean, all printing un scrached, good keybed, needs new backup batt and rom flash. does not power on.
“Up for auction is a Yamaha TX81Z FM Tone Generator Synthesizer Rack Mount. Comes with manual. Works great, has cosmetic wear which is shown in pictures.” 
“This is a 66 key version of the Yamaha Synthesizer, flagship model from around 2000.
“This is an absolute monster.., a rare and great machine… built like a tank!. You probably know this if you are looking.
“This synth is in great working condition and shows no signs of giving up after so many years. Built very solid. Replacement (not original) power supply is included.
“In good used condition Includes flight case an manual (well used)
“NOT WORKING! Will not turn on. I have owned this synth since it was new for my home studio. See pics for superb cosmetic condition. Never gigged, never left it’s climate-controlled, smoke free environment. I do not know what the issue is, but before it went into storage I tested it and found several keys did not play. This was always played thru MIDI from my DX7, so I didn’t notice this before that. Hopefully someone familiar with these can bring it back to life-these instruments have a wonderfully rich sound and deserve to be played.
“Classic analog synth with amazing fat leads, lush pads and filter sweeps from early-mid 1980s, with MIDI, comes with hard case. Synth has some scratches and dings on body and wooden end pieces (see pics) which you would expect from a 30+ year old keyboard.
“For your bidding pleasure: 1977 ARP Avatar Vintage Guitar Synthesizer with Pickup / Cable / Footswitch / Manual / Promos. Used but not abused, some sliders are a bit ‘sticky’ but work. Unlike most Avatars this one works great, sounds great and tracks surprisingly well (better than any I’ve heard). It’s important to find the sweet spot when mounting the pickup. You get the Avatar, original pickup, original pickup cable, original footswitch, original manual, original service manual with fold out schematics, and original promo literature with flexi record. Guitar not included. “
“Overall, the synth is in excellent working condition. The front panel is very clean with hardly a blemish to be seen. The top has some minor marking, the sides and rear are also clean with only minor marks.”
“In great condition works perfectly well taken care of from a smoke free studio. Some cosmetic wear seen in pictures.”
“Very rare Wiard 300 series Waveform City analog synthesizer module Model 342. Long out of production, and according to Wiard, it will never be produced again. Excellent condition. This module has been upgraded by Wiard with Bantam (TT) jacks. It’s a huge improvement. The difference in quality between 3.5mm (1/8”) and Bantam is the difference between plugging into an iPod and a professional studio patch bay. “
“Selling my NON-working Waldorf XT. It lights up intermittently but does not sound. This is the model that is expandable to 30 voices per the photos of the inside board. It looks like someone plugged it in with the wrong power supply or something as seen by the photo near the input. From what I have read this seems fairly common and repairable but i make NO claims that it is, therefore selling for parts only. I do not have the knowledge or expertise to attempt repair. Sold AS-IS. Let me know if there is anything else you need. Selling it with the non-original power supply. Potentially the problem exists there as well. When I plug it into another correct amp power supply it lights up every time normally but the led characters do not show anything. Otherwise, there are some knobs that the top caps are missing and a minor bend near the lower left rack hole. “
“PAIA Electronics Phono Pre 9802 with rack and power supply. Was working when I used it a few years ago, don’t have access to a turntable for testing today. LEDs light up when the power is switched on.”
” Selling my barely used Teenage Engineering OP-1 synth, fm antenna, soft case.
“I am offering a Preowned Vintage Akai AX80 1980’s Analog Synthesizer. Please understand that it is being SOLD AS IS WITH NO GUARANTEES AND NO REFUNDS. Also understand that this is a very large item and shipping costs will reflect this. I have no control over shipping costs. Here is what I know. The unit powers up without issue and produces undistorted sound. I was able to produce different sounds by adjusting controls. Pitch bend works as it should. I was never able to affect sound with the modulator wheel or the master control knob. One key is broken, but still produces sound. Another key, “A”, is depressed and doesn’t spring back. It does not produce sound. The following, “D” note does not produce sound. Some of the keys had been written on with a marker. I removed most of it with some remaining. I believe it will all come off with additional effort. The tone knob is missing. The exterior in general shows scuffs and scrapes/scratches. AGAIN, THE PIECE IS BEING SOLD AS IS FOR PARTS OR REPAIR.”
“Super Rare: Oberheim OB-1 Synthesizer. The Heaviest sounding monophonic synth …Ever. Programmable memory locations where you can store your own settings. There are 2 oscillators – but each has a sub-octave which really fattens things up. Includes Genuine Oberheim VCF Pedal, Oberheim Cassette Interface and cable for additional memory, Original Patch Book, Instruction Manuals for Cassette Interface and Synth, Schematic. Wow! You will never see another set like this. Ever” 
“Like new Future Retro Orb sequencer. Comes with power supply and manual.
“The EML-100 is the rare blue faced precursor to the EML-101. Disassembled, cleaned inside and out, fully refurbished by a vintage synth specialist with decades of experience, systematically tested over a long period, working great and sounding incredible! This restoration process – an attempt to future-proof this instrument so it continues to work well into the future – took 30 hours of skilled labor. Few sellers invest the time, love and money we do in the preparation of our gear, and this is reflected our prices.”
“Up for auction is a Rare Vintage CASIO SK-1 Sampling Keyboard. It is missing a key, but it does not power up. It is still in overall good condition as can be seen in the photos.”