Full Restoration of a Broken KORG POLYSIX SYNTHESIZER

In this video I look into fixing a broken KORG POLYSIX polyphonic synthesizer from 1981. There is an explanation on how to tune it and adding a MIDI interface. Please subscribe and like and get notified about upcoming videos on my channel.

0:00 – Intro 0:21 – Technical details 2:46 – Key assignment section repair 4:25 – Recapping 5:23 – Assembly 6:05 – Optocoupler repair 7:45 – Tuning procedure 10:10 – MIDI interface 11:32 – Conclusion 12:16 – Demo

GitHub: https://github.com/polykit Mastodon: https://chaos.social/@polykit

Korg Polysix: https://www.synthlearn.com/synthesizers/Korg-Polysix.html

Tuning procedure: http://9bit.se/synth-repair/korg-polysix-tuning-the-long-story/

Optocoupler replacement: http://huebnerie.de/2013/07/polysix-photocoupler-myths/

Factory Patches: https://www.dlse.nl/downloads/downloads.html

Korg Polysix service manual: https://archive.org/details/Korg_Polysix_Service_Manual_1

Korg Polysix user manual: https://cdn.korg.com/us/support/download/files/8cd053287f07dd501dc4bda2b22507f2.pdf

SSM2044 VCF datasheet: http://www.bitsavers.org/components/solidStateMusic/SSM2044.pdf

SSM2056 ADSR datasheet: http://www.bitsavers.org/components/solidStateMusic/SSM2056.pdf

Music by LOOK MUM NO COMPUTER https://www.youtube.com/channel/UCafxR2HWJRmMfSdyZXvZMTw

#synthesizer #korg #restoration