Vintage Synth Repair

I've repaired/replaced hundreds of these contact strips over the years.  You
can try cleaning them.  Remove the rubber strips then clean the PCB and the
graphite pads on the rubber strips with methylated spirits.  This can work
wonders.  However, experience tells me that replacing the rubber contact
strips is the better way to go, BUT do clean the PCB as well, I always use
methylated spirits for this.

You can obtain these strips direct from the manufacturer in most cases,
Kurzweil, Yamaha and Roland are easy to get hold of.

Regards

Brian G3OYU

 

From: vintagesynthrepair@yahoogroups.com
[mailto:vintagesynthrepair@yahoogroups.com] On Behalf Of snowleopard
Sent: 11 December 2012 8:57
To: vintagesynthrepair@yahoogroups.com
Subject: [vintagesynthrepair] Kurzweil K2600; keys not triggering

 

  

Anyone have experience with a Kurzweil K2600(s)? I have one that has a few
keys that do not trigger on/off. The synth will produce those sound
internally (via Midi) and the keyboard is sending out MIDI aftertouch on
those keys, but not on/off at any velocity. This started with one key, then
that key came back to life. Then it went out a week later, now 2-3 more
keys. I have a suspicion it's dirt/dust/grit, but before I rip the thing
apart, I want to talk to someone who has pulled the hood off. I took apart a
couple old analog synths, but want to get some advice before opening this
beast. 

Any and all comments appreciated.