Hello, my name is Rusty. There is a fuse on that model, it's located inside the piano, near the power switch. That is the part to check if you're not getting any lights or any function. Let me know what you find. You remove the cover by removing all of the screws from the bottom of the piano.
Let me know what you find. The piano has an internal power distribution unit. Be sure to unplug the piano and turn on the power switch while you work on it so you don't get shocked, or short out the piano.