The Casio keyboard LK-110 should have 9volt input power from a Power Adapter but my family did not no and put a 18volt power Adapter and Smoke came from the keyboard i check all the parts on the power board which there are not alot of parts and could not fine the fault I try Battery and a 9volt power Adapter and the light will not come On this is the first time I can not fine the fault the power board is straight forward check Diodes,transistor,and the PC900v,resistor this where i need help may be I miss something
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