“Here is my Roland CR78 which is in beautiful condition considering how old it is now.
This one has a midi kit fitted and is a rarity to find anywhere.
The Midi works like this
1. Clock (switch left): The CR-78 disables the internal tempo clock and can only be driven via a MIDI timing clock (MTC). This setting is to be used if you want to sync the pre-programmed sound or the local memory to the MIDI clock. It won’t accept any note on/off messages and the voices will not trigger externally.
2. Norm (switch centre): The CR-78 acts like it has no MIDI interface installed an will not accept any kind of MIDI message. The LED on the front goes green and internal tempo clock is selected.
3. Note (switch right): This is the main one you will be using in the studio. The internal tempo clock is disabled, clocking is done via MTC and note on/off messages will trigger the voices. You cannot start the clock from the front panel! At present the kit is tuned into channel 10 by default.
This is the 220-240V UK / EUROPEAN VERSION.
However there are some faults.Please read on.
Usually the unit works perfect and everything works as it should but every so often the bass drum,snare,cowbell fail to work.All the other sounds work fine.This could be a loose connection or something else inside the unit thats causing this fault.All the presets work perfectly and all sliders and buttons working.
However all the sounds work in Midi mode when hooked up as a sound module to your DAW.
I dont have the time to have this looked at or do it myself so it will need a good servicing by a qualified technician/synth doctor.” Click here to search for synths on eBay
“good condition, all works” 
” Offering a Roland TR707 Rhythm Composer drum machine PROJECT with original power supply. Unit lights up. Pads 10 thru 14 do not appear to be working. Will play programs and appears to basically work. I am not an expert so cannot diagnose properly. Has some tape residue around edges. No major cracks damage or physical issues evident. With the assist of a competent tech should be in optimal working condition. Be aware of overall appearance and condition and terms of sale. Offered as a PROJECT, IT NEEDS WORK, SOLD AS IS, good luck.” 
” Used, fully functional, and in excellent condition. Some light scratches on the bottom, one on top, and a tiny ding (shown in photos). No original packaging or instructions included.
“Roland CR-78 in beautiful condition! Comes with original Roland pedal for programming.” 
“I purchased this from an auction in Japan. At the time I was also bidding on a System 100m kit, and the keyboard was sold separately. I ended up winning only the keyboard, and have kept it for almost a year. Now it is time to let go.
“Roland D – 70 synthesizer for parts and repair. I Plugged this unit in and LCD lights up and displays. I do not have an amplifier to test sound. Cosmetic wear throughout, but overall not too bad. Keys stick but some loosen after awhile. Keys probably needs to be cleaned to un-stuck them Unit is being sold as is FOR PARTS AND REPAIRS ONLY!. Very heavy professional item that is built like a brick. All sales are final.”
“Roland MSQ-700 Digital Keyboard Recorder in excellent condition. Vintage sequencer in original box. May require new back up battery, otherwise clean all around. Includes power cord , some original docs.” 
” Up for sale is my vintage Roland JX-3P analog polyphonic synthesizer. It’s extremely clean and in very good cosmetic condition. I’ve owned it for about five years now. The synth is also fully functional. I just had it serviced by a reputable synth tech here in Phoenix, and the following work was done:
“Classic analog mono synth used for techno and acid house music. Features include: single oscillator with mixable wave forms, CV/Gate control, and intuitive sequencer/arpeggiator. Includes Roland soft carry case, and mod grip. Clean battery compartment.” 
“Roland TB-303 Bassline. The classic ACID HOUSE sound. Nothing else comes close. This analog bass synthesizer features a transistor-based resonant low-pass filter, DIN sync, CV/Gate, and a unique sequencer with slide and accent functions. Clean battery compartment. Includes Roland soft carrying case.” 
“You are looking at my prize possession Roland Jupiter 6 Vintage Analog Synthesizer. I can’t say enough good things about this amazing keyboard. Everything is fully functional, and in excellent cosmetic condition. All the knobs and sliders are intact and original. I had a technician install a new potentiometer on the Unison Detune knob, and that knob is a little stiff because it is new. The other knobs are very easy to rotate. There are some minor scratches on the side panels, but overall in great shape. “
“Classic Original TB303
“Beautiful synth, well looked after with no problems whatsoever.
“An amazing keyboard from a personal studio. VGC see photos” 
“Classic Juno sounds in a compact vintage analog package. The synth has some scratches and dings on the body as can be expected from a 30+ year old synth, but everything is fully functional. Note that there was a “music stand” thin plastic ridge that used to sit on top of the body which is missing from this unit–you’ll notice 4 small holes in the top where it used to mount (see pics). This in no way affects the function of this great instrument (and IMO had little practical use anyway).”
“ROLAND JUNO 6 POLYPHONIC ANALOG SYNTHESIZER.FUNCTIONAL AND FAIRLY CLEAN.ALL [61] KEYS ARE THERE AND WORK….I HAVE OWNED IT FOR MANY YEARS BUT DO NOT USE IT ANYMORE.LOOK AT THE PICS CLOSELY.THE ONLY 2 FLAWS I CAN FIND-BURNS ON A FEW KEYS.AND THOUGH THE LAST TIME I USED THE ARPEGGIO IT WORKED FINE,WHEN I RECENTLY TOOK IT OUT FOR CLEANING AND TESTING,I NOTICED THAT THE MODE SWITCH HAD EITHER BROKEN OFF OR DROPPED INSIDE THE UNIT.NOT THAT LONG AGO,I HAD THE POWER CHORD REPLACED,SO IT IS POSSIBLE IT FELL INSIDE.ONE WAY OR ANOTHER,THAT NEEDS TO BE REPAIRED.EVERYTHING ELSE FUNCTIONS FINE.” 
“Roland JP-8000 synth in excellent, non-smoking, studio kept condition. There are a few scratches on one side panel, but it is rare to find one in this great of condition. New battery added recently. It looks great and works perfectly.” 
“really amazing condition WITH THE ORIGINAL BOX!!!
“Item is in great condition and fully functional and includes din cable.” 
“Up for sale is a Roland Juno 60 produced in 1983 in very good condition selling ‘as is’.
“Thanks for looking at this Jupiter-6 is all original, and in amazing, cherry cosmetic condition, blinking LEDs and all! You will be hard pressed to find a Jupiter 6 from the mid-1980s in CHERRY condition! 
“Cosmetically it is in excellent condition. Very clean but we recommend maintenance.
“This Juno 2 powers on and mostly works, the keys marked in blue are non functioning. Keyboard exhibits signs of wear, volume panel is loose and can be lifted from the back plate. This is a good parts keyboard for a tinker or someone looking to get into a synth repair. Selling this keyboard as it is.” 
“I am selling my used Roland Alpha Juno-2 synthesizer. Tested for power only.
“Listing is for what you see in picture.The unit shows wear from use and age. 3 keys missing and power cord cable looks damaged. Does not power on. Untested and doesn’t work properly. – Sold broken!” 
“Roland TB 303 in great shape for age.
” Vintage Roland JUNO 1 Keyboard, Synthesizer in Original Box, Vintage Roland JUNO 1 Keyboard, Synthesizer in Original Box. Unit is in very nice clean condition. Looks like it was used very little. Unit has been tested & works great. Comes with power cord, manual, music stand only. NO pedal is included. Case has 2 minor cracks at the end screws as pictured. ” 
“Roland Alpha Juno 2 Analog Synthesizer In EXCELLENT condition.
“Perfect working condition” 
“Used Roland TB 303 with Kenton CV Gate.
“Vintage Roland D 20 Synth 61 Key Keyboard used but working condition.
“Up for sale is my Roland Juno 6 Polyphonic Synthesizer. I bought this last year thinking I was going to use it but it only used it three or four times. It sounds amazing and being from the 1980s, is in excellent condition as you can see from the photos. The previous owner kept this in the closet for decades. Everything works flawlessly. There is no lag on any of the keys. This is the same synthesizer used for the soundtrack of Stranger Things. It also comes with the original sustain pedal and a few other cables.” 
“Roland Promars:
“Recently serviced with a new old stock faceplate installed, cleaned and new battery lithium installed for saving tracks on the programmer.