Question about Casio Ctk 496 Electronic Keyboard with 61 Keys and Singalong Capability

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The last two keys on the right side do not work

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Probably something has come loose inside if everything else is normal.

Disassemble the device carefully. Look for cables or wires that may be partially or totally disconnected. If there are connectors, "reseat" the connectors. (Take them apart, put them back together firmly but not too firmly.)

If there is still a problem and you have a meter and are able to operate the keyboard with the unit open, you can compare voltage readings of those keys with nearby keys at any points you can find related to the keys. Compare with both keys up and keys down.

On some keyboards, you can bridge the switch contacts with an unbent paper clip to make a connection as though a key had been pressed. If you are comfortable with this and if doing that makes those keys play, then you have a mechanical problem related to the keys. Check for snapped plastic, etc.

Posted on Jul 02, 2009

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You need to check your manual for instructions on key transpose. The right side has been transposed one key higher. If you don't have the manual, try resetting the instrument by removing the internal battery and reinstalling it. Good luck!

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Reset Instructions:
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1 Answer

Enter button not working


If this is a traditional keyboard (not laptop) or extremely fancy keyboard.

Try unplugging the keyboard. Then.
  1. Take a butter knife and slide it into the crevice next to the "enter key".
  2. Apply a small amount of pressure to pry the key upward.
  3. With little effort the key should pop off or slide off.
  4. Check the spot the key was for dirt, dust, food, etc. Clean it if you must. Make sure the actual key does not have anything stuck to the bottom of it.
  5. Push the key back onto it's place on the keyboard.
  6. Plug back in and see if that worked.
If this did not work, you may need to replace the keyboard OR you may want to make sure no viruses are playing an aweful trick on you.

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MY WIFE WAS PLAYING THE ORGAN THIS MORNING, SHE HEARD A SNAPPING SOUND AND THE KEY BOARD WENT DEAD UNTIL YOU GET TO THE NEXT TO THE LAST C ON THE LEFT SIDE OF THE KEY BOARD. ALSO THE VOLUME LOWERS ITSELF...


Servicing is obviously required. By the symptoms, I think a bad electrolytic capacitor is the likely culprit. One other possibility is contamination, including an insect has gotten into the works and causing a short at some point.

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My Roland Juno d has contact issues. I need to have the contacts cleaned once a year because I keep losing sound on some keys and some sound too softly. I am tired of shelling out $135 every year for a...


Answer:
Before i give you the right solution, i have to say that i have posted the answer to FIX the problem of all of the contact problems, people writing in how many of their keys are not working. And the post that they are showing is one that says to clean the contacts. That will not work.
Ok,
the answer.....
You can purchase a kit called Rubber contact kit here: http://www.mcmelectronics.com/product/20-3890&cid=prodCrossSell
or
Key contact Kit:
http://www.oaktreeent.com/Roland_Keyboard_Parts_Units.htm

These kit are made to re-coat the contacts on the keys. It will bring your board back to brand new condition and last as long if not longer than the original coating.
Also can be used for any rubber contacts like remotes or game controllers. etc.
This will work and i did mine after numerous times of taking the keys off and cleaning them.
I hope this gets out to all of you that are having the same problem.
Good luck

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2 Answers

Roland hp550g digital piano has a couple of dropped keys


Power off the unit. Disconnect all cables that plug into the speaker base if you have one - It may be wise to document the individual wires to make their reinstallation easier. Remove the unit from the speaker stand and lay it on the floor on something like an old towel - you may get some dark colored grease on the rug. Remove the screws only for the bottom rear, not the front - you don't need to remove them. Do this by gently turning the unit upside down. Only remove the screws from the sides/rear bottom, and note which screw types you removed from where. Once all bottom rear screws are removed gently return the unit right side up. now pivot the top rear cover - the sides of the cover are attached to the rear - pivot it toward the back. No need to remove the ribbon cables - just let the top lay there or prop it up with something if the ribbon cables don't have enough slack for the top cover to lay flat on its back. You should now be looking at all of the keys uncovered. notice the rear of each key is where it hinges. You'll notice the grease at the hinge point. The keys are thin plastic so you must take care not to damage them. The way to remove a key is to spread the ears at the hinge point of the key you want to remove. I use a screwdriver sharpened to a point, but a large pair of needle nose pliers work good too. You insert the tapered point of the tool between the ears gently to spread them far enough to just clear the pins. Once they are spread wide enough you'll feel them disengage. Each key also has two hooks located side by side towards the front of the key on the bottom side - they are not visable until the hinge is released, but you must realise they are there or you'll either snap the key back onto the hinge or not be able to pull the key out once you've got it off the hinge. Pivot the key towards you to remove it. What you now have in your hand is not the defective part. You have the top that is touched when playing the keyboard. The defective part is still setting in the mechanism. What's actually happened is the keys are made of very thin plastic where they are glued around the weight and this plastic breaks leaving the weighted end down there somewhere. Examine where the key top came from and how it works. The key top is the part you took off of the hinge. You can see how the keys on each side work and you'll also see what is missing from the mechanism for the key you're working on. To make things easier I always remove one additional key top on each side of a key that I repair to make access easier. Just place the other keys you remove right behind the key area in the order you took them off so it'll be obvious how they go back on. Now the broken weighted mechanism you can lift right out. Actually you can lift it out easier with the weighted end broken off, but once you glue it back together you can still get it in there without to much trouble. You only need to remove the damaged weighted mechanism for the key you're repairing. I remove the key tops on each side of the damaged key for visability only. Take your pair of needle nose pliers and pick out the broken end. Now fit it onto the end of the weighted mechanism in preparation for glueing - just so you can see how it's going to go on there. I use a high quality modeling super glue. Before I came across this glue I used JB Weld, but it takes a few hours to dry. The high quality super glue allows you to put everything back together immediately. Installation is reverse of removal: Snake the weighted mechanism back in once you've repaired it - you can always examine those on each side if you get confused. Hook the key top front first then smoothly snap in place the hinge ears over the pins. Make sure to check the movement of the repaired key, and check also to see if anymore keys are setting lower as they may be in process of breaking off. Once all keys are repaired, carefull lower the top rear cover onto the key assembly. While holding the cover onto the key assembly/base, gently turn the unit over onto its back and reinstall the screws. Should be all washer headed screws - do not over tighten. Check the keys again. Set the keyboard onto its base (if it came with one) and you're done. A little practice and it'll take you less than a half hour to fix the key and get it back together

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1 Answer

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Try the reset procedure on page 5 ( last page ) of this pdf document:http://www.dgaudiorepair.com/PDF%20Files/HARD%20RESET%20for%20Current%20KURZWEIL%20.pdf Hope this helps. Note the first procedure says highest white key. I'd do the second procedure.

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