Yamaha DX7

“This auction is for a Vinatage Yamaha DX7 Digital Programmable Algorithm Synthesizer. This item is being sold for “PARTS OR REPAIR” because I am not able to test it for functionality, so please bid accordingly. If you have any questions please message me prior to purchase. The winning bidder will receive exactly what is pictured.” Click here to visit listing on eBay

Yamaha DX7

“It works perfectly. You’ll see some plastic missing from one side and a small dent on the other in the pictures. When it was shipped from Japan they apparently didn’t pack it very well. Will make sure to pack it better than they did. Dents do not affect playability.” Click here to visit listing on eBay

Yamaha DX7

“This is a wonderful machine, one of the classics of synthesiser technology. The case has a few scratches and a couple of tape marks on it, apart from that there’s nothing wrong. All the keys, buttons and slides work fine.” Click here to visit listing on eBay

Yamaha DX7

“This listing is for a YAMAHA DX7 Super MAX.
Upgraded with SUPER MAX Extension Board and Backlight LCD Display.
Working properly. Super great extension DX7!!
Sometime the display may show the message “Change Battery” at start up.
The battery has been replaced with a new one, and the memory is retained regardless of that message, so disregard it.
This unit is for 100Voltage.
You may need a voltage converter.” Click here to visit listing on eBay

Yamaha DX7

“Yamaha DX7 Digital Programmable Algorithm Synthesizer – FOR PARTS OR REPAIR!!* This item was found in a storage unit I bought at auction! This keyboard seems to be in great shape for the age! Comes in a hardcase it powers on and reads needs battery! No other testing done as I do not have a amp or anything to hook it up to why being sold as parts or repair! Comes with 11 data sound cartridges which are also untested but included are*dx-7 voice rom ×2*top forty rom*wedding band rom*unique rom*bo tomlyns analog 1 rom*bo tomlyns analog 2 rom*bo tomlyns best of usa rom*yamaha dx data cartridge*dx ram*64 voice data ram ×2* case has some pet hair on the outside! The keyboard just had minor dust which I wiped off” Click here to visit listing on eBay

Yamaha DX7 with Grey Matter E! Expansion

” This Yamaha DX7 is the cornerstone of 80’s synths… a beautiful instrument…

Trust me, I’ve owned 5 of them! This one is my favorite because it has the Grey Matter Expansion inside, which, if you do not know about it, please visit this website: http://www.muzines.co.uk/articles/grey-matter-response-e/2082

But, it is awesome…and it is in excellent shape (other than the physical wear from being over 30 years old).

I PERSOANLLY opened it up and cleaned and adjusted each and every contact inside so that there are no keys that have issues upon being pressed. (often, over the years, the contacts get dirty or bent, which impairs the touch sensitivity.

Rest assured, every key works perfectly and the inside is in excellent condition.

If you are not put off by the scratches and scuffs, you will be getting one of the best DX7’s around.

The Grey Matter E! expansion (which I photographed for you) is what sets this instrument apart from others.

ALSO, just another annoying thing that you won’t have to worry about: I replaced the battery inside (a little CR 2032 battery which controls the memory…often they are dead in 30 year old instruments…but I replaced it and soldered it onto the board as it is supposed to be).” Click here to visit listing on eBay

Yamaha DX7

” Yamaha DX7. Digital programmable algorithm synthesiser.

Selling on behalf of my dad – he bought it new in the 80s. UK power operated. In good working condition. One sticker and a few sellotape marks. See images.

This listing includes: 3 ROM cartridges, 1 RAM cartridge, custom-made semi-flight case, original operating manual, books, various loose guides and patches from magazines. Paper may have a few pen markings.” Click here to visit listing on eBay

Yamaha DX7

“Up for sale is our classic Yamaha DX7.

The unit has been recently serviced. This included recapping the power supply and also changing the suppression capacitor on the power input board.
Memory battery was changed and presets loaded.

Cosmetic condition is excellent overall. There are some marks and blemishes.” Click here to visit listing on eBay

Yamaha DX7

“Yamaha DX7 61-Key Synthesizer Keyboard w/ Case & #3 Cartridge. Internal Battery is at 2.8v

So all the keys work and I went through the presets and all of them worked. The backlight for the display isn’t working. I don’t know how to use the functions. The volume knob works the pitch and the modulation work as well. I think it may need an internal battery but I’m not sure. I’m selling this working for parts or repair due to the light and me not being able to test all the functions properly besides the keys. I don’t want to hide anything but I want you to know that it does play nice and sound good. I took a close up of the chunk that’s out of the back corner. Other than that it’s in fairly nice condition. A little bit of tape residue here and there. The case is solid but the interior padding isn’t super protective so I’m going to add some extra protection when I ship it so it doesn’t move. It will get to you safely. I’m going to wrap the keyboard case and bubble wrap and then put it in a box.” Click here to visit listing on eBay

Yamaha SY77

“Yamaha SY77 Vintage Keyboard FM Synthesizer 1989.

Reasonable offers considered. US Seller. Fast and safe shipping with full insurance coverage over full purchase price.

B+ cosmetic condition.

Some wear from use over the years, but nothing major on the top case.

One palm sized dent on the bottom cover fr the previous owner trying to take the cover off without removing all screws. Still sits flush and this doesn’t affect any functions of the keyboard.

One screw missing from the bottom cover. Plastic threads for screw broke off. Will be included with sale to be reglued in.

Tact switches do all work, but “enter” & a couple of others need a solid press to work. Could just need cleaning, could need replacing. Will possibly attempt to replace faulty tact switches before sale.

Missing (1) plastic slider cap for data entry slider.

Backlight on display non functioning. Display still legible. Planned on upgrading to modern replacement instead of changing backlight.

All keys have been removed and keybed has been throughly cleaned and re-lubed. All keys function as they should and a couple of keys have been replaced due to faulty plastic clips.

Floppy drive has been cleaned with a new belt installed. It is fully functional now.

Internal Battery original but fully functional.

Includes original sound banks along with 64 updated sound banks with vintage Analog type sounds.

Very solid FM synth. Dx7 on steroids.” Click here to visit listing on eBay

Yamaha DX7

“This is a Yamaha DX7 digital programmable FM synthesizer from the mid-1980s with memory cartridges in working condition.

This listing includes the read-only memory cartridges numbered 3 and 4, which contain the “master group”, “keyboard and plucked group”, “orchestral and percussive group”, and the “complex & effects group. These cartridges are tested with this synth and work.

This listing also includes a read-write memory cartridge for you to store your own DX7 patches. This is also tested and works.

The internal memory works too and includes the default set of sounds. However, the internal battery is low and needs to be replaced. If this internal battery dies, you will need to reprogram the internal memory, which can be done using free software like SysEx Librarian and the original soundbanks available from Bobby Blues website. Search the web for “Yamaha DX7 factory reset | Load preset sounds sysex” for instructions. If you can program this synth, you can easily learn how to reprogram the internal memory.

The volume slider is scratchy!
The volume slider is scratchy!
The volume slider is scratchy!

The wheels, buttons, and keys work fine. All the inputs and outputs work: headphones, main output, sustain pedal, MIDI, etc.

This was a working instrument for many years and it was used in smokey rooms in the 1980s and 1990s. This instrument is dirty! It has not been used in a smoking environment for about 15 years and it does not smell like smoke anymore.” Click here to visit listing on eBay

Yamaha DX7

“This is a great one owner Vintage 1983 Yamaha DX7 Synthesizer Keyboard in excellent shape and working order. From a climate controlled studio environment. Includes music stand, 4 Cartridges, Performance Notes sheet, and sustain pedal. Ships Well Packaged and insured. ” Click here to visit listing on eBay

Yamaha DX7 Project Machine

“Up for auction is this nice Yamaha DX7 FM synth. It appears to be in good condition aside from the big crack in one of the plastic side panels. I plugged it in and turned it on and it makes sound. I only played it briefly through a practice amp so I can’t really comment on the quality of the sound but it sounded nice to me. The buttons certainly change the sound and you can switch between the internal presets and the cartridge that is included. The cart is #4 Orchestral & Percussive Group / Complex & Effects Group. ” Click here to visit listing on eBay

Yamaha DX7

“The Yamaha DX7 synthesizer is an FM-based digital synthesizer with distinctive sounds of the 80s. The Yamaha DX7 has a profound and lasting impact on popular music and it remains one of the biggest selling electronic instruments in history. The DX7 is in good condition with all keys and functions working properly. Includes 1 data cartridge.” Click here to visit listing on eBay

Yamaha DX7 II-FD

“YOU ARE BIDDING ON A YAMAHADX7II-FD DIGITAL KEYBOARD WITH GREY MATTER EXPANSION,THE INTERNAL PRESETS NEED TO BE RE-PROGRAMED, IT ONLY WORKS WITH THE CARTRIDGE, TWO OF THE BOTTONS (9&28) NEED TO BE PRESSED A LITTLE BIT HARDER THAN THE REST, BUT THEY WORK, THE CASE IS INCLUDED, PLEASE CHECK THE PICTURES” Click here to visit listing on eBay

Yamaha DX7

“You are bidding on a gently used Yamaha DX7 Digital Programmable Algorithm Synthesizer. This Yamaha DX7 Digital Programmable Algorithm Synthesizer is gently used and does show signs of wear from normal use. This Yamaha DX7 Digital Programmable Algorithm Synthesizer has been tested and is in perfect working condition. On a scale from one to ten with ten being the highest, I would rate this Yamaha DX7 Digital Programmable Algorithm Synthesizer a 7. This auction will include the Yamaha DX7 Digital Programmable Algorithm Synthesizer as shown in the pictures. Anything not shown in the pictures (Original Box, Etc.) will not be included in this auction. ” Click here to visit listing on eBay

Yamaha DX7

“This Yamaha DX7 is in great condition for its age. It looks, sounds, and plays fantastic! There are just some minor chips in the paint and few scratches on the underside (please see photos). It appears this instrument was very lightly used. A new internal battery has been installed in a socket to allow for easy future replacement. The factory preset sounds are loaded and a DX data RAM cartridge containing the master voices is included. Price includes a new padded gig bag and a USB stick containing a variety of DX7 manuals and reference materials.” Click here to visit listing on eBay

Yamaha DX7

“yamaha dx7 synthesizer with.

comes with special edition ram (uninstalled)

Great synthesizer, full of cool sounds and endless settings.

In very used condition as you can see from the pictures.

I Purchased about a year ago and has been in my studio on a keyboard stand since

Everything works as it should.”
Click here to visit listing on eBay

Yamaha DX7 with E! Grey Matter Project Machine

“vintage yamaha dx7- the keyboard is clean with standard wear. when turned on the screen says ram corrupted. the internal sounds are zero. if turned on holding down #16 & #32 simultaneously the cartridges will play. I’m told the sounds have to be re-installed and the synth is a half step below C. There is a way to tune it but I don’t know a thing about the keyboard. I’m selling it exactly as photographed. No other parts, no cartridges. Consider the synth in ‘not working’ condition. It may be an easy fix for someone who has dealt with these before. I borrowed a couple of cartridges and the instruments sounded great through an amp. I bought it untested about 10 years ago thinking it was in working condition because it looks great, very clean. I thought maybe it needed a battery but youtube instructions looked too complex for a non-repair guy.” Click here to visit listing on eBay

Yamaha DX7 II FD

“YOU ARE BIDDING ON A YAMAHADX7II-FD DIGITAL KEYBOARD WITH GREY MATTER EXPANSION,THE INTERNAL PRESETS NEED TO BE RE-PROGRAMED, IT ONLY WORKS WITH THE CARTRIDGE, TWO OF THE BOTTONS (9&28) NEED TO BE PRESSED A LITTLE BIT HARDER THAN THE REST, BUT THEY WORK, THE CASE IS INCLUDED, PLEASE CHECK THE PICTURES,” Click here to visit listing on eBay

Yamaha DX7

“Yamaha DX7 E! Grey MatterDigital Synthesizer Keyboard. Needs a battery! Ram corrupt message is intermittent on power up because battery voltage is too low.

E equipped dx7 in good condition! Great sound! Included with sale are the music stand, modulation and sustain pedals and power cable with the synthesizer. Pics of cartridge voices is for demo purposes only”
Click here to visit listing on eBay