On my sx-KN5000 I have a key that is not playing a sound although strangely enough if I press the key right at the back end )nearest to the black cover it does sound. This points I think to a faulty key action. I therefore for want to open up the unit and have a look but I think it contains two capacitors which of course can hold a charge even when the mains is disconnected. I want therefore to discharge them for safety’s sake. But I do not know what they look like, what voltage they are, and therefore whether I can simply discharge them with a screwdriver or I need to use a resistor. Can anyone give me any information or point me in the right direction.
I have tried to get this done locally (wirral) but there is no-one who seems to be able or wants to do it. there is an engineer in Surrey but sending the keyboard there is very expensive and difficult.
I,ve had mine open a few times—-these capacitors only hold about 25-30 volts—and discharge quickly—–not even enough to kill a mouse!!!!—-unplug from mains first—–don,t try to discharge them with a screwdriver—you could cause a great deal of damage to sensitive, unobtainable integrated circuits—as you say, the fault is more likely due to key action or key contacts—————-Good Luck—–Tubby Latham—Oldham—Lancs