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Yamaha PSR-240. Mechanical sound

Mechanical sound when i press on the key

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Deformed metal contact will also add a slight resistance to it. You may have some dirt or grit in there, or a plastic pivot may have broken.

Vaccuum it first while pressing key or affected keys, and then apply something like LPS1 (which makes an excellent contact cleaner) If that does not clear it up, go the opposite direction with compressed air while moving the key or affected keys.

If that does not clear it up, you may need to diassemble the key to find the source of the noise and address it that way.

Posted on Oct 28, 2012

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Posted on Jan 02, 2017

  • 1137 Answers

SOURCE: yamaha Psr-340

I don't have Cubase myself but there must be a track setting that allows you to monitor what you are playing live. Also make sure your keyboard shows up as the midi controller on the software. Your receive channel has to match the send channel of the keyboard. Make sure that synthA or synthB shows up as the sound source (audio out). XFi Midiport is your midi in but since Cubase already sees your keyboard your problem is an audio one not a midi one. Hope this helps.

Posted on Jul 24, 2009

  • 1121 Answers

SOURCE: 3 keys don't work on my Yamaha PSR-150 keyboard.

yes. you must change keyboard pad, below the keys, and check for dirt and deteriorated board.

Posted on Oct 30, 2009

  • 88 Answers

SOURCE: 3 keys non function on Yamaha PSR 3000 sometimes

rubber contact strip requires replacement

Posted on Feb 05, 2010

  • 5603 Answers

SOURCE: some of the keys do not play on our Yamaha

The key contacts have gotten dirty. The contacts are CONDUCTIVE rubber pills that are pressed onto circuit traces on the circuit board under the keys. Onehas to dis-assemble the keyboard very carefully noting the size and location of all the screws and using great care of the cables that connect the top and bottom of the case.
when you remove the keys, you will find silicone rubber strips with the black pills underneath, two pills per key.
Clean these with ONLY 99% isoprophyl alcohol and Qtips as well as cleaning the circuit board traces they contact.
Carefully re-assemble the keyboard.

Posted on Jan 09, 2011

  • 5603 Answers

SOURCE: I have a yamaha PSR 240 and one of the keys (E)

Yep, a key contact has got contaminated... You have to disassemble the unit to expose the keys.

You have to remove the offending key which is OFTEN tied to a bunch of keys. Under the keys you will find strips of silicon rubber with little domes sticking up. Under the domes are two contacts, either two black conductive rubber or sometimes a ring with a pill in the middle. These contact circuit traces with a black coating on the board under the keys. Clean the pills AND the circuit traces GENTLY with ONLY 99% isoprophyl alcohol. Reassemble the keys and the unit.

Be very careful handling, especially the ribbon cables between teh upper and lower halves of the unit.

Note there are TWO contacts per key which one closes before the other and that is how the key velocity is measured by the processor.

Posted on Feb 12, 2011

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Hi, This is probably due to worn rubber contacts. The sound is switched by pressing a key which in turns press a carbon contact on the PCB under the key. In time these wear out and need to be replaced.

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