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Sustain polarity HOW TO REVERSE sustain polarity

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My keyboard sustain now has reversed polarity on random occasions...have tried everything, and it's not my pedal because the same things happen with different pedals.


I would suspect the sustain pedal jack on the keyboard is either dirty or defective. Try using some contact cleaner first, and if that doesn't work replace the jack.

Apr 29, 2016 | M-Audio Music

1 Answer

When I plug the damper pedal into my Roland ep 77 the damper comes on and stays on no matter if the pedal is pressed or not pressed.


Try plugging in the pedal with the Roland powered down or off. With the pedal plugged in, turn the Roland on again. The Roland should sense the polarity upon power up. If this doesn't work, I have had those pedals get defective right out of the box, so try this...Get a ΒΌ inch guitar or signal cable and plug that into the damper jack. The cable will represent an open circuit polarity since nothing is shorting out the leads. See if the EP77 is sustaining or if it is not. Alternately, try shorting the guitar cable by laying a piece of metal across the top and bottom of the jack. A pocket or kitchen knife or any bare wire will do. If this does not work, your assumption about the power supply may be correct.

Dec 26, 2014 | Roland Music

3 Answers

I plugged a sustain pedal from my Yamaha DX7 on the dumper pedal jack but it works opposite as it should (by pressing the pedal sound cancels as i release the keys; when pedal runs completely free sounds...


every sustain pedal got different polarity.. normally just go to global setting on your keyboard and change damper polarity setting to plus or minus (select which one work with your sustain padle).

Jul 26, 2011 | Korg M50 73 Note Workstation

1 Answer

I have a mo8 and the sustain pedal is reversed. What can I do to make sustain when pedal is depressed?


This is a common problem when one uses a Roland sustain pedal with other brands such as Yamaha. Frankly, I would just get a Yamaha pedal to use with the unit. Some Yamaha synths have a setting for pedal "polarity" but I could not find it in the mass information of the MO8 manual. The Yamaha Tyros synths have a setting that is easily found in the utility settings... I don't see that in this manual. SOMETIMES you can open a pedal and find that you can with a soldering iron transfer a wire to reverse the pedal... but not all pedals have both contacts available.

Jul 10, 2011 | Yamaha Music

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How can I get my Roland Dp-10 damper pedal to work with my novation remote sl and axiompro 61 again? I use a mac and logic studio and it has been working fine up until recently.


Look for a setting "pedal polarity" someplace either in the software or in the units.

Read section 2.4.2 of the Axiom manual. Also Appendix E where sustain is documented. The sustain is controller 64. I would use method 1 of the 2.4.2 writeup. You actuate the control (pedal) which arms the unit to accept setup sequence for that particular input.

You want to turn on MIDI output for the sustain pedal. Now remember that a Roland pedal has revese polarity of MOST others and that may needs to be setup. It is NOT clear from the documentation if the Axiom recognizes the reverse sense of the pedal, but it should. It SHOULD sense the pedal is normally closed and when you actuate it sense the change so you can configure it.

Some of the software MAY try to configure the Axiom and ASSUME the pedal is the more common polarity and undo the programming you have done.

Apr 04, 2011 | Roland Dp-10 Damper Pedal-new

3 Answers

Hello- my P95 sustain pedal does not work when plugged in but the sustain works when you disconnect the cord from the back of the keyborad


This is confusing... you say "the sustain works when you disconnect the cord"? How can that happen? and doesn't work when it is plugged in.

MOST sustain pedal problems are due to people using a different pedal than the keyboard is designed to use. It is very common that someone tries to use a Roland sustain pedal on a Yamaha and oof course it doesn't work because the Roland pedal is normally closed and Yamaha usually requires a normally open contact.

A FEW keyboards now check the state of the pedal input when power is first turned on and configure the pedal polarity accordingly. For these keyboards, make sure the pedal is plugged in before power is turned on.

Apr 02, 2011 | Yamaha P95 Digital Piano

1 Answer

A bought an Yamaha DGX 640 grand a week before and the note sustain for a longer duration and overlaps with the current playing notes. I checked the sustain in the function setting and it is also showing ...


The function setting is for the PANEL sustain (Page 68 of your manual)

The other method of sustain is by footswitch or pedal option. See page 13.

If you use a footswitch, it needs to be a normally open contact type. If you plug a Roland type in, it is opposite polarity and will sustain UNLESS the pedal is pressed. Make sure nothing else is plugged in the sustain jack... headphones that are inadvertently plugged in there would sustain.

Mar 06, 2011 | Yamaha DGX640 Music Keyboard

1 Answer

When i press down on it it wont sustain but when i take me foot off the pedal it will sustain. fc5 yamaha


You may be trying to use this with a Roland synth... they require the OPPOSITE type switch.

If you have a Yamaha higher end product such as Tyros, there is a setup screen in the utility menus to set the polarity of the sustain and other inputs and that setting may be wrong.

Jan 14, 2011 | Yamaha Fc5 Sustain Footswitch

4 Answers

Sustain is in reverse yamaha p-85


I have the same problem, But I have been using the same pedal since new. Infact it came with this pedal. Then suddenly it started doing this. Could I have changed soem setting by accident?

Jul 08, 2009 | Music

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