Question about Casio LK30 Note Lighted Keyboard

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Casio WK 1600 : Sustained keys

I have one octave of keys whereby the tone remains sustained after pressing them once and I am not able to play on these keys after that. The problem remains despite following the manual to switch off the power. Please advise. thanks in advance.

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  • Anonymous Feb 08, 2008

    casio wk 1600 some of the keys once pushed stay lighted and then have no sound

  • Anonymous Aug 01, 2008

    Same problem with a wk-3500. I have two sections of seven keys in a row that do this. At first it was just one section and one day it 'magically' cleared up. Now two sections are doing it.

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Hi,
The "sustained notes" means that those keys are not sending the "off" message that is sent upon the keys being released. Now it maybe that if you are filling up the memory with lots of notes at one time or a program is particularly heavy on sounds and settings, yes, this couuld prevent the message getting to the processor.
If this is a regular occurance, my feeling would be that the microswitches under the keys are wearingand require replacing (could be pricey compared to a new unit......but god bless ebay, someone will want it)

Posted on Nov 05, 2011

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Remove all power sources for at least 2 minutes. That means removing the batteries and power cord completely from the K board. Then try again. If that doesn't do it, it'll be time for a service visit...accordianman

Posted on Nov 19, 2007

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Posted on Jan 02, 2017

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You don't need to reset factory.
You just need to change the setting of LOCAL CONTROL.
Lets start :::
While holding TONE / SETTING button,press key D#7 at 7th octave (highest octave on the right hand). Then release. That's all.
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You don't need to reset factory.
You just need to change the setting of LOCAL CONTROL.
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Then the sound must be heard..


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Hi, i have a problem with my casio wk 210 keyboard. when i push a key then the note keeps playing and doesn't stop. i have tried turning off the power and turning off reverb and none of them fix the...


It sounds like the sustain is stuck on as if a sustain pedal is active. You don't mention if you have one, however if you MIGHT have one and you have used a Roland pedal, that brand is reverse sensed and would cause note to remain on.

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One of my keyboard black keys is playing louder than usual what can i do?


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Verify that one of the automatic chord modes is not active. If you find other combinations triggering other notes, download this scvhematic showing TYPICAL Casio key matrix scanning:

http://elektrotanya.com/casio_wk-1200.pdf/download.html

The matrix is shown on page 5. It could be one of the disconnect diodes has failed. These diodes shown below the matrix on page 5 prevent crossing between multiple notes held during scanning so each can be individually scanned. Not there are TWO contacts per key and this is used to sense key velocity as one closes before the other.

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My WK- 3700 Casio keyboard is malfunctioning.


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This would be on the "STROBE" line for either the first or second contact for THE OCTAVE you have problem with. There are disconnect diodes that prevent sneak paths.

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Sustain pedal on Yamaha DGX not working


I had the same problem, its to do with the polarity of the pedal. My pedal had a polarity switch on the bottom just flick this over and this should fix the problem. Otherwise another solution was to hold the pedal down and turn the keyboard on.

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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

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Casio 1600 sustain pedal problem


Not if its like mine, its a completecircuit vs.incomplete circuit problems.

I had the exact same problem with my Casio keyboard and a Yamaha sustain pedal I bought.

I'm not an electrical genius, but I was able to get it to work by opening it up and doing a little modification. Of course I first just tried switching the white wire with the black one but that didn't change anything at all when I tried it. It turns out the Casio wants the circuit completed to sustain, and broken for no sustain, which is the opposite of what the Yamaha pedal does.

I opened it up and mine had three three flat metal strips let's call them Top, Middle and Bottom. The Middle and Bottom ones were joined together on the right side, and the Middle and Top ones were touching on the left side when the pedal was not pressed. These seperated when the pedal was pressed, thereby breaking the circuit because the wires were on the top plate and on the joined Middle/Bottom plate.

So to flip it I:
1. Unsoldered the Bottom wire
2. Cut apart the Bottom and Middle plates on the right.
3. Bent the Middle plate on the right to touch the Top plate instead and soldered those together.
4. Soldered the Bottom wire back on.

That's it! Once I figured it out, it took only a few minutes to fix.
Good luck!
Paul

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