Just hooked up the new Samsung OTA receiver, and I think it is defective. I get neon yellow polka dots through the entire picture. It is most noticeable on SD programs and with blue backgrounds, but is also visible with HD programs. I double-checked all connections and settings and all was fine. Even hooked up my old SIR-T151 again, and picture is fine with the old box. What would cause this neon yellow polka dot effect ??? Has anyone had a similar experience with a digital receiver ?