How to Fix Dead Keys on a Casio Keyboard
- 1). Remove the plastic back enclosure of the keyboard. Several small Phillips-head screws mount it to the top.
- 2). Detach the circuit board from the plastic mountings in order to access the keyboard assembly and circuit board. This requires removing a few more small screws. At this point, it's a great idea to take digital pictures of your keyboard's innards so you have a visual record of how the keyboard was assembled. Gently lay the circuit board aside.
- 3). Remove the main key assembly from the keyboard's body enclosure. Again, take pictures with a digital camera so you can see how things are assembled. Be very gentle when removing the keyboard assembly because it will probably be connected to various circuit boards by delicate wire.
- 4). Locate the "buttons" that are attached to the circuit board directly underneath the keyboard's keys. You're usually looking for a strip of round buttons made of gray or black rubber that are punched into the circuit board.
- 5). Remove the rubber strip of buttons from the circuit board. The strip is not glued down but simply pressed into the circuit board via a few rubber nubs and holes in the circuit board. It will take minimal effort to remove the rubber strip of buttons from the circuit board, which should reveal a long strip of black contacts underneath.
- 6). Clean the contacts with a cotton swab and 90 percent isopropyl alcohol.
- 7). Reassemble your keyboard. If necessary, use your pictures as a reference. Test it to make sure that your keys are now functioning.
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