MATRIXSYNTH

The Maskinrum Synth Collection Presents - The SEIKO DS-310 Additive Digital Synthesizer.

Published on Nov 19, 2013 Maskinrum·2 videos

"This is part I of the SEIKO DS series of instruments.

Originally invented by Gray Laboratories as the Basyn Minstrel (3995 USD) as a direct competitor to the NED Synclavier (five figures USD) and eventually sold to SEIKO this specific additive engine never reached a huge audience.

Released in 1983 by SEIKO this series or arranger keyboards (DS-101, DS-202 and DS-250) was no success.
Mainly - I guess - caused by the fact that no one really knew what it was; was is a synthesizer or an arranger keyboard ? And with no MIDI this was dead already before it was released (remember 1983 was the year of MIDI).

I think it sounds amazing and this video will take you through the additive synth wonders of the DS-310 unit.
This is a video showing more features than sounds - so if you want a video of the unit only playing the sounds of this unit look elsewhere.

Make sure to visit www.maskinrum.com for more info on my collection."

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."