I AM WORKING ON A WESTINGHOUSE MODEL LTV-32W3 THAT HAS NO SIGNAL FROM BASIC DIGITAL CABLE BUT WILL RECIEVE A SIGNAL ON YPbPr1 and YPbPr2 and AV . WOULD THIS BE A MAINBOARD ISSUE ???.ITS ALSO WORKS ON HDMI BUT ACTS AS IF THE TCONN IS NOT WORKING PROPERLY WITH WEIRD DOTS AND COLORS BUT WORKS GREAT ON ypbpr2. THE CUSTOMER DOES NOT HAVE A CABLE BOX SO THEY CAN ONLY USE THE RF INPUT.