I have a Korg O1/@W Pro X that died. I was playing another piano via midi through the O1/W and then suddenly the display faded and the keyboard died. I unplugged the midi cables and powered down and up on the O1/W . The display lit up momentarily and then turned off. No sound comes out, and it's as if it's off when the power is on. Any suggestions on a solution? Sounds like a leaky capacitor, perhaps? Don't know much.