Question about Yamaha Full-Size Keyboard
Make sure that the power comes into the board from the adapter unit. So check the voltage to the keyboard.
If not present check adapter for failure ;If SMPS type check this link:
If otherwise you must open to check the power to the incoming board, the regulator , the supply to the main switch and the power to the main board, the synthesizer section/processing board. remove and plug back all connections, if not there are errors in the PCB.
Posted on Sep 29, 2010
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Posted on Jan 02, 2017
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