CTK 5000

[Spr Ford 510]

My Casio CTK5000 keyboard will no longer sustain notes when using the sustain pedal. This is a sudden occupancy. I have checked the pedal with a meter and it is ok. Does anybody have any input?

[- T -]

Plug in the pedal.  Stand behind the keyboard.  Step on the pedal to keep it depressed.  Slowly rotate the plug back and forth in the jack as you reach across the keyboard and press keys.  If sustain comes and goes intermittently, as you rotate the plug, then you have a dirty contact leaf inside the jack.  Clean it with some electrical contact cleaner or rubbing alcohol on a cotton swab.  DO NOT USE ANY OTHER TYPE OF CLEANER OR SOLVENT.  Also clean the inside of the ring where the jack protrudes from the keyboard case - where the sleeve of the plug contacts the jack.  If the cotton swab is not long enough, try daubing some contact cleaner or alcohol on the tip of the plug and run it in and out of the jack several times - rotating the plug as you do so.  If sustain does not come and go intermittently in your initial test, then you most likely have a broken contact leaf inside the jack, or a lead has come unsoldered from the jack, or the sustain circuitry has failed.  Any of these would require opening the keyboard case for testing and repair.  If you are not experienced with this, the keyboard should go to a service center, but you would want to consider the cost of repair against the cost of replacing the keyboard.  The CTK-5000 originally sold for about $200 USD.

[Spr Ford 510]

many thanks for the suggestions.  I will try everything that you have noted and keep my fingers crossed.  I do realise that a technical repair to the circuitry could cost more than the unit is worth, but heres hoping.