Friday, November 29, 2013
Korg Poly-61 Repair Broken Synthesizer Fix - Master Clock Plays Sound Without Pressing a Key
Published on Nov 28, 2013 DJ EDDIE FM·8 videos
"This video demonstrates some problems with the Korg Poly61 and the repair process. This video is intended as a follow up to Mik Music's video http://youtu.be/RbuBV5MQMTc where he diagnoses the Korg Poly-61 at length. Check out Mik's video first if you are trying to repair yours. I also found some useful tips on his google + page at https://plus.google.com/1072314112099...
This video details the issues I am having and documents the repair process.
My Poly 61 was having an issue where the Frequency LED on the top panel would not illuminate. When I typed "22" on the panel, a constant sound would automatically start playing and sustain. If I pressed the keys, that would modify the sound.
As a result, I followed Mik's suggestion to repair cable 27 that connects the master clock board to the CPU board. I purchased Molex WMLX-106 KK Mini Crimp Terminals for .100 Center Housings (2.54mm) from Fry's Electronics in Burbank, California for $3.00. I stripped the wires and crimped the terminals onto cable 27's wire harness attached to the CPU board. Once I performed that repair, the Frequency LED illuminated and the master clock function was restored (including the joystick). However, I am still having a couple of issues. I need to fix the "Parameter" button because it does not work no matter how hard I press it. Also, it appears that there is no functionality on the voice board. The LEDs on each voice do not light up. I am going to test it today to see if it is the connectors from the CPU Board to the Voice Board or some other issue. Thank you Mik for your advice and suggestions.
In a nutshell, even after the master clock fix that I performed, I am still having the same issue. Luckily the master clock works now.
This video shows the replacement rechargeable battery on the board."
4 comments:
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© Matrixsynth - All posts are presented here for informative, historical and educative purposes as applicable within fair use.
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Do you happen to know the new site of mik from germany because google plus cancelled eveything.
ReplyDeleteNot sure what happened to MusicMik / MonoMik. Haven't heard from him in years. His site was here: http://www.mik-music.org. His YouTube channel appears to be gone as well: https://www.matrixsynth.com/search?q=musicmik&by-date=true
DeleteI have a Poly 61 that produces sound without pressing the keys. Pressing the keys changes the sound, but not in a proper way. Only 2 of the voice diodes light up. Did you ever find out what was causing this with yours?
DeleteI have a Poly 61 that produces sound without pressing the keys. Pressing the keys changes the sound, but not in a proper way. Only 2 of the voice diodes light up. Did you ever find out what was causing this with yours?
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