Question about Audio Players & Recorders

1 Answer

Keys on Casio keyboard are inoperative

There are 8 keys in sequence that sound only once when my Casio keyboard is powered up, then they won't sound again until the unit is powered down and then powered back up. When it is powered up again, the same keys become inoperative after they are struck once. I have two WK-3000s that developed the same problem about 30 days apart. The second keyboard's malfunctioning keys are at a different octave than keyboard #1 above.

Posted by on

  • ginocumbe Mar 08, 2009

    I have a Casio WK-3500. I have a similar problem. When i turn on the keyboard, there is a particular block of keys that when struck, they only play once... then maybe after 30seconds to sometimes 5mins, they will become operational again.

×

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Just wanted to "chime" in. I just recieved a Casio keyboard from a customer with this same problem to work on. I initially found 4 corroded solder joints. Repaired them, same problem. Ginocumbe's description leans me towards capacitors. Will let you know what I find or even if I cant figure it out. Though 2 years ago, you probably added your synth to the land fill.

Posted on Nov 27, 2010

  • coral_bay_co Nov 30, 2010

    Update: Done with synth repair. Not completely sure wich thing I did got it working. I took it apart

    down to where the key button contacts are. They are similar to what they use in remote controlls,

    where the black pad is pushed down onto black "painted on" traces to complete the circuit. I used a

    tooth brush to move away some light corrosion around the ribbon cable solder points. Did not seem to

    be enough corrosion to cause the problem. I also pulled up the rubber side of the buttons. At first

    they seem to be glued down then after gently pulling one up I found it was only a tight fitting

    rubber push thourgh foot type of thing. Easily pulled out and replaced, I used a jewlers flat

    screwdriver to push it back in. While the button pad was up I lightly brushed the "painted on" black

    traces with a tooth brush. They also did not seem to be corrded enough to cause any problems. Giving

    up I reassembled and was surprized to find the 8 keys in question worked fine and repeatedly as they

    were supose to. Though the key just left to those 8, that used to work, stoppe working. Well it

    would work randomly, though it always sounded as if I hit the key hard even if I pushed it down

    softly. So I dissasembled it again, this time finding that the painted on black traces has lifted

    off, seemingly due to the lubracant used on the mechanical part of the key weaights. As I do not

    have the bottle of paint on stuff, I attempted to repair by soldering two thin wires to make the

    contact - this was extreamely difficult. Re asembled and the key that was working randomly now works

    great, though the 8 keys from before stopped working. I dont think soldering wires for all 8 keys is

    a good solution, I will tell my customer that I may be able to find a bottle of the paint on stuff

    and can try that to fix them, though my observations make it seem to be another issue causing it.

    This is inconclusive but more info for the next guy to go on.

×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Kenwood integrated amplifier ka 895. Why no sound output?


How do you get to know that the unit turns on .After power up what are sequences happening i can help you

May 26, 2015 | Kenwood Audio Players & Recorders

1 Answer

Yamaha ax470 amplifier, power amp works but nothing else


This unit has main in, preout jacks. When you say the amp works, are you referring to the amp turning on? There will be no sound out of the amps, if there is no preout. Are you aware that there needs to be jumpers between the main in and preout jacks? If you don't have the jumpers, no problem; just use a stereo patch cable between the jacks above.

May 08, 2014 | Yamaha Audio Players & Recorders

1 Answer

The amp won't power up. The cord is is, the power is on, but when I press the Standby/On button, the MP3 LED blinks a few times, then it goes off and all the LEDs, from the protection, speaker A, B and so...


Hi... If all the speakers are connected properly then I would say, there is a failure in either the power supply filtering caps or one output has failed and it's going into Protect mode to keep from frying the speakers
It will require service at that point.

Aug 21, 2010 | Cambridge Audio Azur 650a 2Channel...

1 Answer

My Casio WK-3000 works perfectly except I have a dead octave (8 notes) on the keyboard. I've initialized the system but the 8 notes remain dead.


You will have to have someone open up the keyboard and check that the flex-cables from the keys are all connected to the main circuit board

Aug 16, 2010 | Audio Players & Recorders

1 Answer

Im trying to control my sony receiver with my coolsat control but i dont know the code


Hello

The only 3 programmable keys on the remote control are the TV, VCR, and DVD keys. The STB functions are hard coded in the remote control processor chip and cannot be modified. You can however assign any device to the 3 programmable keys as desired. For example if you do not have a VCR, you can assign that key to your Stereo, TIVO, or any other device. Since those codes are not listed in the "Brand List" of the remote control booklet you can use the "AUTO CODE SEARCHING" method shown below to locate the code for those devices.

>> MANUAL CODE ENTRY PROGRAMMING

- Use this method to program your TV, VCR, or DVD device using the readily provided codes in the "Brand List" contained in the User's Manual.

***NOTICE***
Once the programming process starts, if you remain idle for 10 seconds or more, the current function gets instantly canceled, and is confirmed by the selected device LED blinking once.

1). Locate your DEVICE code number from the “Brand List” in the User's Manual.

2). Turn on the DEVICE you desire to control.

3). Press and hold both the OK key and the desired DEVICE key at the same time for 2 seconds. Release both keys when the device LED indicator blinks twice.

4). Enter the 3-digit code number that pertains to your device from the list. The LED indicator will blink twice if the code was entered correctly.

5). Now press the power button on the remote control to power OFF the programmed device. If the device does not respond repeat steps 1-5 again this time using the next code from the device list. If no more codes are listed then use the "AUTO CODE SEARCHING" method listed below.

>> AUTO CODE SEARCHING

- Use this method if your DEVICE does not respond to the listed 3-digit code or if your device manufacturer is not listed in the "Brand List" tables.

***NOTICE***
Once the programming process starts, if you remain idle for 10 seconds or more, the current function gets instantly canceled, and is confirmed by the selected device LED blinking once.

1). Turn on the DEVICE you desire to control.

2). Press and hold both the OK key and the desired DEVICE key at the same time for 2 seconds. Release both keys when the DEVICE LED indicator blinks twice.

3). Pointing the remote control at the target DEVICE you desire to control, press and release using a slow sequence the CH+ key until the chosen DEVICE turns off. The LED indicator will blink once each time the CH+ key is pressed. When the target DEVICE turns OFF, press the OK key once to save the code. The DEVICE LED on the remote will then blink twice to confirm the save operation.


>> CODE NUMBER IDENTIFICATION

- Use this procedure to identify the 3-digit code that was programmed with the Auto Search method to control a selected DEVICE.

***NOTICE***
Once the programming process starts, if you remain idle for 10 seconds or more, the current function gets instantly canceled, and is confirmed by the selected device LED blinking once.

1). Press and hold both the OK key and the DEVICE key at the same time for 2 seconds. Release both keys when the DEVICE LED indicator blinks twice.

2). Press and release the "PAUSE" key. After 2 seconds the LED will blink twice then followed by the codes for the FIRST, SECOND, and THIRD digit for the current DEVICE setup code. The LED will blink 10 times if the code is a "0" zero.

NOTE:
All programmed DEVICE codes default back to "000" when the remote control batteries become depleted or are removed.

Hope this can help you.

Best regards

Oct 13, 2009 | Sony Audio Players & Recorders

1 Answer

Kc550 keyboard amp stopped working


Hi....

I just opened one of those a couple weeks ago.

If I were checking it out I would test the speaker ( 4 ohms or 8 ohms)or find out if there's a speaker fuse from the power amp part.

It's worth getting fixed.

Let me know.

Apr 06, 2009 | Audio Players & Recorders

1 Answer

No audio output


HI...

Check it with headphones and mess around with the volume control.
If it has items you can "edit" someone may have turned down the digital volume control in the user edits.

Mar 23, 2009 | Audio Players & Recorders

1 Answer

Yamaha psr-270 keyboard almost all keys are not functioning


Most if not all Yamaha PSR series have a silcon pad sandwiched between each octave and a continuous printed circuit card that runs the length of the keyboard. What I have experienced is the raised **** (2 per note) weaken and split near the larger portion of the 12 note silicon section. Depending on which one splits..you can have a note that plays full volume or no volume at all. Basically the processor timer measures the difference in contact time between the first *** touching the printed circuit point and the second *** touching it's contact point...it calculates the time difference and assigns it a "speed of impact" to derive a volume level for that specific note.
New silicon pads are somewhat difficult to find (they cannot be repaired) and the task to replace them is tedious but not impossible. Exercise great care in popping the printed circuit board out as it is thin and fragile. Pull the old silicon pad out and slip the new ones in place..make absolutely sure everything is in its place (including the keys) and gradually snap the printed circuit board back in place... keep in mind that the board is a one piece full length component. Patience is req'd
Each pad costs about 10-12$$ ...a 5-octave kybd has 5 pads....so it'll cost about 50-60 bucks to replace them

Nov 14, 2008 | Audio Players & Recorders

1 Answer

RE: Casio wk 3000 musical Keyboard only reads Ples Wait


I am not shure but it sound like a hard drive problem, does it have a hard dribe that keep's it's memmory.

Regards

bob

Feb 07, 2008 | Audio Players & Recorders

Not finding what you are looking for?
Audio Players & Recorders Logo

Related Topics:

157 people viewed this question

Ask a Question

Usually answered in minutes!

Top Audio Players & Recorders Experts

kakima

Level 3 Expert

98608 Answers

 Grubhead
Grubhead

Level 3 Expert

4678 Answers

The Knight
The Knight

Level 3 Expert

69570 Answers

Are you an Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...