I HAVE THE DIRECTV HR10-250 . I LOST MY DIGITAL 1080i OUTPUT FROM THE HDNI CONNECTION. NO PICTURE NO SOUND. WHEN I SWITCH TO 480, I GET PICTURE AND SOUND WHEN I HAVE MY DVD PLAYER ON. WHEN I SWITCH BACK TO 1080, NO PICTURE/SOUND. I'VE TRIED TO REBOOT 3 TIMES AND NOTHING HAPPENS. ALL CONNECTIONS ARE TIGHT AND CORRECT. ANY SOLUTIONS?? WAX8