iFixit - Answers With Device "Casio keyboard"

Casio keyboard: CDP S160 a few keys mysteriously triggering or stopping other keys

Sat, 30 May 2026 12:41:18 -0700

This repair is for a poor customer who's 15 year old lad is so desperate to get it fixed! Yes he confessed to spilling some gooey drink over it! - cleaned carefully first four octaves contacts and PCB board. re graphited the board in places. Cured a dozen keys, BUT C1 + F1# + E2 + C3 + G3# giving very mysterious triggers! ( and these notes well away from where the spillage occured). These five sometimes no sound, then sometimes they all work, BUT when they are all working , holding down C1 + F1# + E2 together - The C1 delays - then double triggered several times sometimes ( whilst all three are continuously held down!) When these 5 x keys decide to work, they all work fine when pressed individually !! How mad is that ??

I know rubber contacts must be okay, swapped them to working parts of keyboard - and the working parts still no problem. Examined all connectors - very few anyway,

motherboard no visual signs of damage or corrosion etc.

Can only think the channels from some keys are interfering with others (short circuit?).

Not knowing how the send signals from each note are clustered together - so hard to prove any short or crossover going on.

. I see some questions here others have had similar problems, - and as yet unresolved?

Casio keyboard: wk1600 casio keyboard BND RESET problum

Mon, 12 Jan 2026 10:07:55 -0700

my wk1600 casio keyboard when i turn it on,showing only blank display.but after few minutes BND RESET massage display on it.please help me to solving the problum

Casio keyboard: Power doesn't turn on

Fri, 22 Aug 2025 09:02:24 -0700

My CT-X9000IN won't turn on. What could be the issue?

⟐ Commented August 22, 2025 at 9:02 MST

Casio CGP-700: I just got a used Casio CGP-700 and when I attempt to turn on the 40w

Wed, 01 Jan 2025 20:11:46 -0700

I just got a used Casio CGP-700 and when I attempt to turn on the 40w Stand speakers with the grand piano tone selected, the output is a whimpy soft harpsichord sound. It does appear that the wire that plugs into the bottom of the keyboard is frayed where it enters the horizontal speaker box that is part of the stand. Is there a way to separate the 4 wires at that juncture to insure that they are connected and not shorting out?

⟐ Commented January 01, 2025 at 20:11 MST

Casio keyboard: works with batteries, just not on AC

Tue, 05 Nov 2024 00:57:58 -0700

works with batteries, just not on AC

⟐ Commented November 05, 2024 at 0:57 MST

Casio keyboard: Why will my casio wk-210 not power on?

Mon, 04 Nov 2024 08:27:30 -0700

The AC adapter was working yesterday, but it is not longer working. I also tried batteries with no luck. When I press the power button, nothing happens.

The day before the failure, the screen started flashing and the unit became unresponsive. after reseating the ac adapter in the wall, it started working again. Unfortunately, it did not work at all the next day.

⟐ Commented November 04, 2024 at 8:27 MST

Casio CTK-3000: Display not working after cleaning keys

Sun, 28 Jul 2024 20:03:14 -0700

Hi Folks, recently I cleaned my ctk-3000 because some keys were not working, now all the keys are working fine but after that i noticed that the display is not coming on the screen, what could be the reason?

Casio WK-220: 5 keys in the lower octave are not working

Fri, 12 Jan 2024 05:07:08 -0700

Some of my keys especially the lower octave are not working (Left from middle C).

I tried to open and clean the board, cleaned the rubber but all in vain. he dead keys are not actually in one place but are scattered. I love this keyboard, what should I do?

Casio keyboard: Volume control knob action

Mon, 16 Oct 2023 18:09:18 -0700

There is no change by using the volume knob on a CTK-900.

Casio LK-170: Certain keys are not working.

Tue, 12 Sep 2023 03:16:23 -0700

random keys along the keyboard have suddenly stopped working

Casio keyboard: C5# Key not working

Sat, 09 Sep 2023 10:52:41 -0700

Hello iFixit! I have a CTK5200 model, and the C5 sharp key no longer registers on the screen and no sound plays. Is this a common problem, and how can I fix it? Thanks.

Casio WK-220: Casio WK220: Certain keys still not working after cleaning.

Thu, 01 Jun 2023 16:58:33 -0700

I have cleaned the rubber contacts and the keys still not working. Checked all the soldering joints and all seem intact. What else can I do?

⟐ Edited by author June 01, 2023 at 16:58 MST

Casio keyboard: Why are some of the keys not sounding?

Mon, 24 Apr 2023 22:53:00 -0700

I have an old Casio CA-100 keyboard and some of the keys stoped working. I took it apart and made sure everything was clean, some keys were broken but not in a way for there to be no connection to the circuit board underneath. After looking at the circuit board, and testing out each individual direct connection to the membrane. I still can’t figure out why some of the sounds aren’t working. When you touch some of the connections the speaker will cackle confirming they are receiving power but no sound, others aren’t receiving power at all.

Casio CTK-3000: How I repair incoming supply pin

Wed, 08 Mar 2023 20:06:03 -0700

How would I repair keyboard supply pin

⟐ Commented March 08, 2023 at 20:06 MST

Casio WK-220: Keyboard not starting when power button pressed

Sat, 10 Dec 2022 02:28:56 -0700

Was working fine until a few days ago. Always had a loose connection problem near the dc input but that used to be fine and it used to work after moving the power supply a little bit here and there.

Verified that the power supply is not the problem by connect the 9v dc input from the battery end.

Now whenever I try to switch it on the lcd backlight comes on but the keyboard itself doesn’t start. As long a the power button is held down the backlight is on but on releasing it switches off immediately.

For a few days the backlight would stay on even when the power button would be released and sometimes the keyboard would actually start and then go back to a COD backlight only mode. Now even that doesn’t happen

Any help would be appreciated

Casio WK-220: One key not working

Thu, 25 Aug 2022 15:44:34 -0700

All other keys work fine apart from one.

Can we fix this myself?

CASIO CDP-230R: How do I replace the LCD

Mon, 01 Aug 2022 09:46:55 -0700

How do I replace the LCD and where do I find the part for Casio piano

⟐ Commented August 01, 2022 at 9:46 MST

Casio keyboard: will not power up0

Wed, 29 Dec 2021 20:12:11 -0700

Will not power up on batteries or AC adapter what would this be

⟐ Commented December 29, 2021 at 20:12 MST

Casio WK-220: The Rhythm button is lite. It will not switch to Tone.

Fri, 29 Oct 2021 06:16:53 -0700

I have a Casio wk-200. The Rhythm button is lite. It will Not switch to Tone. The Piano Settings feature appears to be stuck

Casio keyboard: G above middle C periodically playing loud and shrill

Thu, 09 Sep 2021 10:09:31 -0700

Out of the blue, the G above Middle C will everyone once in a while sound the same note at the loudest setting. I could be holding down the key and hear what I expect, a G note at the volume set. Within a few seconds of holding the note, another note will play much much louder. Sometimes that “overtone” will be one sustained note, sometimes a staccato like pattern, and other times just a one note. Always the same G and always much much louder. Disrupts playing and often very startling! Thanks for any help.