THe sound on my Casio WK 1200 cuts out when it warms up , like on a hot day. The LCD backlight cuts out, (although you can still read it), and the sound cuts out, although you can still hear the sound, very faint and distorted. This can sometimes be remedied by a sharp tap on the left side of the keyboard, so it might be some loose/dry joint which is temperature sensitive, or a duff capacitor?However, before I fix this, I have to work out how to open it up! I think I've taken out all the screws, but something seems to be preventing top and bottom of the case from opening. Any ideas, please?
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