why does my keyboard power up only when I wiggle the power chord?
I have a problem with my Yamaha psr-E413. My key board won't stay on, I have watched it gradually lose power time after time. I have been able to regain power, only when I wiggle the power chord for a while right at the adapter insert on the key board. Now it's at the point to where it won't power up at all.What could the problem be?????