OT: Sustain pedal issue

Ok...I know basically nothing about keyboards, but just received an old Korg Concert 5000 series 88 key electirc piano (originally made in 1987). I bought a sustain pedal for it but it does not sustain the notes. When I put the pedal in the damper jack, it sustains when I am NOT pressing on the pedal. The pedal I bought was a VFP 1/25, made by Fatar.

The keyboard was just in the shop for a tune up so I am fairly certain the sustain was working then. Are there different sustain pedals. It is a 1/4" jack.

Any help would be appreciated.

-Chris

There is a switch at the bottom that says PS-15 or PS-10. I switched it to both, but no luck. Is that the polarity?

There ARE two different kinds of sustain pedal, for lack of better terms a "positive" and "negative" polarity pedal. Most modern keyboards automatically detect the polarity of any sustain pedal plugged into them and adjust themselves accordingly. Older boards like the one you mentioned cannot detect the polarity of the pedal, and if your board uses a "positive" type pedal and you have a "negative" pedal plugged in, you'll experience the "reverse sustain" effect that you've described. You need to find a pedal that is compatible with the board. There are some pedals that have a polarity switch on them to make them universally compatible - might be worth trying to track one down.

Okay, I've done as I said: MFX Sustain Fix 3.1 is up at my site.

- m