lamp was replaced. HD channels aren't clear.Viviteck sent me the following lamp a Rptv4240 lamp module, item part # 1000043-A. The pictures in hd aren't clear/sharp like it was before the lamp blew.The hd channels are the seam as the regular ones. What happen to my hd and what can the problem be ? The lamp cost me $ 196.00 The tv is 2 years old . Thanks