I had the same thing on a roland unit... darn roady did not get the in and out thing on amps and gear!! 40+ volts on a 25 volt cap!! they do not stand that very long!! I recapped the output and replaced the final drive chip in both sides to match. worked perfect then!! I would signal trace the unit ...

try the restore to factory function.
rtfm always comes to mind.
and yes user presets can be changed... or erased.
there should be a dedicated forum out there for the 20
try posting your question at http://www.korgforums.com/forum/phpBB2/ ... m.php?f=47

ok it depends on the switch style try CaiKote 44 Kit for membrane silver dome style dimple switch https://www.ebay.com/itm/CaiKote-44-Kit-includes-swabs-and-brushes-silver-based-1-0/182387909501? or try KEYPAD FIX carbon rubber button repair like in most a/v remotes. https://www.ebay.com/itm/KEYPAD-...

a good virgin silicone lube works. try dielectric grease. any good auto parts store will have it. avoid spray type as there are other chems in there to make it spray.. those chems can melt the plastic. crc makes some good stuff. I use versachem VersaChem Dielectric Connector Grease Part # 15339 Line...

any parts lists or schematics for the korg radias 49 keybed?
I have one for the radias rack.
I just need the one for the keybed with a parts list.

sounds to me like a lot of GM sounds... so are you wanting to recreate these tracks??? look at gm modules first... if you are looking for recreation.... I would start with an integra7... and you can select bit loss to get the old sound... or use roland sc55 units!! use a o scope and spectrum analyze...

well as a seller of electronics... and as a contractor for the dod. (for real) for me to export electronics …. well.... they take a dim view on that!! usa customs will flag any thing going out... (watch list) tear it down... and they may not get it back together right!! or even try!! if I am lucky t...

try an fs1r Yamaha! I have one listed on e-bay most of the indo Asian sounds are in there! yea it was late 1990's but it had all of the sounds!! it is fm formant for sure.. the new Yamaha units nail it as well... but plan on 3000.00 to over 5000.00 usd on the new units... also the Yamaha cs80 had lo...

sounds like bad cap or caps.
how much test gear do you have?
what is your location?
yes I work on these

Impressive even though I'm not as into the orchestral sample player Vangelis. I was going to post the topless live Vangelis video from the 70s but I can't find it. That one is impressive too, but of course from the time when he was playing a zillion keyboards and synths simultaneously. The man's a ...

hey who made this synth module?
V.A.T.J.T.I. (excerpt) - Vangelis (Evangelos Odysseas Papathanasiou)
I cannot make out the brand and model at time 1:40
cool setup!!
I like the key beds setup too!!

I just went the route of 4 integra 7 units... stereo effects... for me it works better and has more memory!! I can go total retro or layer for new sounds!! and I can use the ipad to edit fast!! The JX8P is in great shape. She sounds lovely and the strings and analog digital type sounds are amazing. ...

so are you looking for a modern 61 to 88 keyboard to work with a full modular setup?? there are midi to cva control modules that will go both ways in the euro racks!! as far as good midi key beds... I like roland... some like Yamaha... but I do own the m3m keybeds as well!! an 88 as well as an 61 ke...

ha yup almost as good as showing wave form!! I would just search for the midi file for the song in question.... or do it old school with a modern recorder... now days you can slow down a song and keep the pitch!! protools has an add on that work well. or just find can do it by ear to midi for you!! ...

one of the new tricks for older gear with floppy drives is to use a floppy emulator made to work on you unit. several of those on amazon and e-bay.. this will make it so you can use a usb flash media or flash drive to have your device load files on!! and I do have a full case of floppy's here... lol...