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I have a Roland HP 1 and the pedal is noisy when pressed. Is there anything that can be done?

Rolad HP 1 digital piano

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Is it a scratchy noise? sounds like a dirty Pot. common issue, easy fix. go to radio shack or wherever and get some of there electronic component spray lubrication. its in a small metal can.


Its best to take the pedal apart if you can so you can get the pot really good and work it in, but sometimes you can just stick the nozzle right in between the pedal itself and the housing and get the pot just fine.

Posted on Dec 10, 2012

  • Jill Williams Dec 10, 2012

    Thanks! It's more of a creaky noise. But I'll definitely try that.

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This wish an after market pedal, or the original 3's connector? If the keyboard is on when you plug and unplug that, it is likely due to a voltage reference getting confused. Usually when you get constant sustain then most likely a switch is stuck closed, or open, down there in the pedal. How these things work normally is that a pliable switch is opened, for sustain, or closed. It depends on the keyboard. Some keyboards have a setting inside them to accommodate both types of pedals, and some pedals have a switch to choose either. Your keyboard does not have a setting that I can tell, other than adjustments for a resonance option (nice feature). I am not sure the newer RPU-3 pedal is compatible, it seems to be for the newer models. If you are handy with a volt meter, then can check the cable's pins for a common, then a pin that changes with each pedal (use continuity mode, beeps when circuit is closed). Could be a piece of dust is in there, or hair or carpet stuff, and a good cleaning would fix that from blocking the normal function. Manual Link: http://media.rolandus.com/manuals/HP-237_OM.pdf

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Yep... Roland pedals are reversed, that is, normally closed contacts. Unlike some Yamaha keyboards, the Casio doesn't have an inversion function available. You have two choices to solve this: 1. Buy a pedal with the corect sense 2. Open the Roland pedal and MAYBE with a soldering iron you can move a wire to select a contact with the opposite sense.

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I you mean the sustain type pedals, FIRST check the connector(s) as they often come loose or unseated. Next check for a broken pin in the connectors. It is UNLIKELY you could troubleshoot anything inside with just a meter. It appears that some of the Roland pedals receive 5 volts in the connector, and upon contact closure the voltage is sent back to the piano where it drives C4570 buffers with 680K to ground and an RF bypass cap and series 330 ohm to the + of the C4570's. The circuit I have is for a different piano but if yours uses the 8 pin connector it is likely the same.
The contact is actually optical interrupter modules with a driver transistor. There are threshold setting pots in the pedal assembly as well. The farthest I would suggest you go is to make sure the optical interrupter modules are free of dust if this is the type you have,.

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The Roland synths now monitor the pedal as the power is turned on and supposedly decides which contact type is used.

Remember that for MANY voices, such as piano, notes are held longer BUT they do not continue indefinitely just like the sustain on a real piano works. On a real piano the dampers are lifted, but the strings eventually stop ringing due to the losses of energy in the strings.

Some voices will be held,such as organ tones.

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1.Make sure you are plugged in to DAMPER (not FC1 or FC2) 2. Check to see if the notes STOP sustaining when you PRESS the pedal. If that is the case, first try turning off the Roland with the pedal plugged in and restarting with the pedal pressed down. 3. Press the EDIT button and scroll to Damper Polarity. See if it's set to Standard or Reverse. 4. If problem persists after all that, try holding the pedal jack into the Roland at different angles and then try the same with where the cable connects to the pedal. At that point, you can either attempt to repair the pedal or get another one.
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Use 99% isoprophyl alcohol.

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1 Answer

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1 Answer

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You may need to clean the contacts which are usually conductive rubber. I explained stuff for another Roland problem with two keys that were intermittent. I have an EP-7 that I had to do the cleaning of the key contacts. Use 91 or 99 % Isoprophyl alcohol to clean BOTH the conductive "pill" (Black under silicone rubber domes) AND the traces on the board where they press. Clean gently as the traces have a hard black coating.

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There are two types of damper pedal switches, on that is closed until you press it, and one that closes when your press it. It sounds like your Casio is expecting one type and your Roland pedal is the other type. A quick way to test this is to plug a guitar cable into the Casio pedal input and see if the keyboard sustains. If it does, then your Casio requires an "normally closed" switch.

Some pedals have a small switch near the cord or even on the bottom of the pedal that will reverse the switching operation (BOSS pedals, a division of Roland, have this feature). If you can find that, then change the switch position and you should be OK.

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