Sustain pedal issues. Seems to be stuck at half. Help!!

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danjfoley
Posts: 5
Joined: Wed Dec 27, 2017 5:26 pm

Sustain pedal issues. Seems to be stuck at half. Help!!

Post by danjfoley »

I have 2 sustain pedals. Both worked fine yesterday. Today they appear to be stuck at half damper.

I have plugged in a foot switch into the damper and it works fine. I have tried reserving the polarity. When I do that sustain completely cuts off when I press the pedal down.

When polarity is set correctly, pressing down sustains correctly but not pressing leaves the keyboard in some kinda half damper state.

I have tried running the half damper calibration and it starts with the bar almost all the way up, and when I press the pedal down the bar goes all the way up. I press ok and it says calibration failed.

I have turned the keyboard off and back on again, both with the sustain pedal plugged in and not plugged in.

I have a gig on Sunday!

Is my keyboard broken? These sustain pedals were both fine yesterday. Any suggestions?
voip
Platinum Member
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Joined: Thu Nov 27, 2014 2:07 pm

Re: Sustain pedal issues. Seems to be stuck at half. Help!!

Post by voip »

Which make/model of sustain pedals is the problem associated with?

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danjfoley
Posts: 5
Joined: Wed Dec 27, 2017 5:26 pm

Re: Sustain pedal issues. Seems to be stuck at half. Help!!

Post by danjfoley »

Yamaha fc4a and a Roland dpm10. One measures 2 ohms other 3 ohms ... The foot switch measures 110 ohms when shut.

All 3 worked fine a few days ago. Could bother damper just be broken and happened go at once? Or Is the key card just. It reading 2 to 3 ohms as enough for a pushed down damper?
danjfoley
Posts: 5
Joined: Wed Dec 27, 2017 5:26 pm

Re: Sustain pedal issues. Seems to be stuck at half. Help!!

Post by danjfoley »

Update. One of the sustain pedals is working now. The older one which is odd. The foot switch always works so it will be my backup at the gig. I ordered a new sustain pedal. Maybe there just was not enough resistance in the pedal for the keyboard?
voip
Platinum Member
Posts: 4010
Joined: Thu Nov 27, 2014 2:07 pm

Re: Sustain pedal issues. Seems to be stuck at half. Help!!

Post by voip »

In the Krome Parameter Guide section on half damper pedal calibration, there is a note which states:
"Since the half‐damper pedal is highly sensitive, please
use the optional DS–1H. Other pedals may not produce
the appropriate effect, or may be impossible to calibrate
correctly."

The Korg Krome's Damper jack socket has contacts that connect with the Tip and Sleeve of an inserted jack plug. There is no Ring contact.

The Roland DP-10 pedal's jack plug has Tip, Ring and Sleeve terminals, and all three terminals appear to be connected internally inside the pedal. The Krome can't make use of the Ring terminal, which may explain the difficulty in satisfactorily calibrating the pedal. The Korg DS-1H pedal's jack plug also has Tip Ring and Sleeve terminals, but the Ring terminal is not connected to anything inside the pedal, which is fine, since the Krome cant "see" the Ring terminal. Hope that makes sense.

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