TRYING TO GET PIP TO WORK. HAVE CABLE WIRED INTO DIGITAL CABLE BOX AND HDM1 FROM BOX TO TV. THAT IS WORKING. HAVE CABLE WIRED INTO DVD AND USING S-VIDEO TO CONNECT TO TV AND AUDIO CONNECTORS. THAT IS WORKING. WHEN I SELECT PIP A BOX OPENS, BUT NO PICTURE. THEY WORK SEPERATELY BUT ONLY ONE PICTURE AND NO PICTURE IN THE SMALL BOX UNLESS I SWAP. THEN NO PICTURE IN THE LARGE SPACE. ANY SUGGESTIONS?