My grand has been fine for years, but Tuesday I placed a disc and it didn't play and is now stuck. Is there any way I can get it out? Later that day I tried to get the disc out, but didn't have any luck. I was still able to play the piano. Now I have a new problem. It won't power on or off! I have tried rebooting it, but it won't turn on or off. Any suggestions? I haven't ever had any problems with it until now.