A:
Hello Bill, we're sorry to hear that. To isolate the issue, please refer to the troubleshooting steps provided on the link below:
https://www.sony.com/electronics/support/home-video-dvd-players-recorders/dvp-sr510h/articles/00132795
https://www.sony.com/electronics/support/home-video-dvd-players-recorders/dvp-sr510h/articles/00009197
Regards, _Bob