Receintly purchased 'tube' RCA TV to be used ONLY with a DVD player. No antenna - no cable - no TV signal. Hace attached a 3 plug cord to the component video input on the back of the TV to the corresponding (y - pr - pg) video output on the dvd player. The set turns on and separete earphones receive sound when DVD is plated - but screen in blank except for message "noi signal", Have tried everything - input button on remote - attemptto change channels etc. Would you tell me the correcrt step by step procedure to get the DVD player to work on the TV.