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Yamaha CVP 105 pedals don't work

Originally, the problem was that the pedals would not work unless the plug was duct taped into the unit...and then only sporadically. We opened it up and discovered a crack in the circuit board....probably from continually contorting the plug to make the thing work. So, we repaired the circuit board and tested it with a voltage meter....checked out. Now, this piano sustains continually as if the damper was held down. I like to put the soft pedal in break/fill mode.....and it too, continually breaks/fills as if it was held down too.

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Posted on Jan 02, 2017

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SOURCE: Sustain pedal not working on my Yamaha P-90

What I figured out is that when i turn on the keyboard, if i hold down the pedal by accident, it will work in reverse. I dont know if this is what you mean. If it is, just dont touch the pedal when you turn it on. If it isn't, try to return the pedal. I dropped one, it had this problem, and they gave me a new one. Your cord for it might have been bent (?). Also, turn the keyboard on with the pedal already plugged in. It's not made to be plugged in while it's on. Hope this helps. - Matthew

Posted on May 15, 2009

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SOURCE: hi, i purchased yamaha fc15 sustain

The answer is NO... Roland uses the opposite sense switches on foot pedals... They use NIRMALLY CLOSED and your Yamaha is a NORMALLY OPEN switch.

SOMETIMES you can open these pedals and find that the pedal has the opposite sense switch available and you only have to unsolder and move one wire to make it a NORMALLY CLOSED pedal.

Posted on Dec 24, 2010

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SOURCE: Can I replace the pedal unit to the Yamaha Clavinova CVP-75?

I can't solve the problem, but just wanted to sympathize because I have the same problem. My pedal is broken on my Yamaha Clavinova cvp85a. It worked wonderfully for years but finally it broke.
I'd be in the market for buying a new pedal or fixing the old one. But I've not found any suggestions in any of these forums for either solution.

Posted on Feb 27, 2011

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SOURCE: Problem with Yamaha YDP223 Digital

First thing is to check the connector is fully seated... sometimes most of the contacts make but one might not. Beyond that, contacts in the pedal are next suspect.

Posted on May 20, 2011

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SOURCE: Hi, I hope can help me with this problem because

It sounds like the inputs from the pedal switches are "floating", that is, not pulled up or down and they are drifting across the logic threshold. If I could find a schematic I could direct you right to the problem. For now, check the voltage across the switch contacts with a high impedance meter. Also check the resistance to ground of the common of the contacts. Without a schematic I am afraid to have you try things lest I direct you to do something that would cause damage.

Posted on Jun 08, 2011

Testimonial: "fredy2 is simply a "wizard". A patient, reactive and efficient one: only 2 tries, and my gear has been fixed! When no one could help me, he did. thx!!"

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1 Answer

I need to replace the ped unit on a Yamaha Clavinova cvp 96. It's noisy.


You could try the following which was issued as a service note by Yamaha


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26007186-25qnjy3ifepwofogsdsgnkd0-3-2.jpg

Dec 14, 2015 | Yamaha Music

1 Answer

My clavanova cvp-96 sustains all the time, pedal up or down. Pedals have normal mechanical action. It started intermitant but now all the time.


You could try this ( some pianos determine polarity when turned on if pedal is plugged in )

1.Remove the pedal from the keyboard. Turn on without inserting pedal. Plug in pedal whilst turned on. If it works you're done.

If it is still backwards go to step 2.

2. Remove the pedal. Plug in the pedal. Turn on. Try it. If it works you're done.

If not go to step 3.

3. Buy a genuine Yamaha product or a switchable pedal.

Nov 14, 2014 | Music

1 Answer

Wiring diagram yamaha cvp 303 clavinova


i have a broken cvp-85a but the pedals are ok so?

Jan 14, 2013 | Music

1 Answer

Need manual for CVP-700 english version


how opening yamaha cvp-700

Jun 30, 2012 | Music

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

1 Answer

Hi, I hope can help me with this problem because I start to get desperate. I have a Clavinova CVP-85A. The sustain effect is always activated, whether the pedals are plugged in or not. I read that to...


It sounds like the inputs from the pedal switches are "floating", that is, not pulled up or down and they are drifting across the logic threshold. If I could find a schematic I could direct you right to the problem. For now, check the voltage across the switch contacts with a high impedance meter. Also check the resistance to ground of the common of the contacts. Without a schematic I am afraid to have you try things lest I direct you to do something that would cause damage.

Jun 07, 2011 | Yamaha Music

1 Answer

I obtained a Yamaha cvp-7 keyboard in Mexico and it does not turn on - I know the switch is bad - is there a repair technician in Puebla Mexico?


If the switch is bad, and you cannot get a replacement, I would open up the unit (if it were mine) and solder wires across the switch. The completion of the solution would be either putting a switch into the power line going into the unit, or plug it into a power strip that has a switch on it.
Problem solved, and $0 cost for most do-it-yourselfers.

Feb 27, 2011 | Yamaha Music

2 Answers

The disk drive on my Yamaha Clavinova CVP-105 acts like it has a disk in it when it doesn't and won't always play pre-formated disks like it used to. Is the drive dieing? Where can I go to get it fixed? ...


Often these drives are continuosly selected by the controller and rotate even without a disk.

These USUALLY use the old 720K disks which are almost impossible to find. The common 3.5 1.44Mb floppies often will not work in these units.

You can SOMETIMES use the 1.44Mb disks by covering the second corner hole AND degaussing the disk with a tape eraser and then reformating the disk in the Clavinova.

The pre-formatted 1.44Mb disks without degaussing SOMETIMES leaves artifacts between the tracks used by the 720K disks that causes problems.

Nov 27, 2010 | Yamaha Music

2 Answers

I have a clavinova CVP 409. If I try to record using an external memory device (external Hard drive or memory stick, a message appears; DISC ERROR. Can you please help me solve the problem or direct me...


I SUSPECT that the CVP 409 will ONLY talk to the Yamaha USB floppy drive, not a hard drive or memory stick.

The internal drivers for these musical instruments do not have the "smarts" to talk to the wide variety of peripherals that PC's are able to.

Sep 10, 2009 | Yamaha Full-Size Keyboard

1 Answer

Can I replace the pedal unit to the Yamaha Clavinova CVP-75?


I can't solve the problem, but just wanted to sympathize because I have the same problem. My pedal is broken on my Yamaha Clavinova cvp85a. It worked wonderfully for years but finally it broke.
I'd be in the market for buying a new pedal or fixing the old one. But I've not found any suggestions in any of these forums for either solution.

Jul 21, 2009 | Yamaha Music

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