Sharp LC-55LB481U User Guide LC 55LB481U - Page 78

LC-55LB481U 55" Full HD LED 1080p Sharp Roku TV Symptom Possible cause Try this... Broadcast TV may be experiencing problems or may not be set up • Try another channel. The station may be experiencing problems. • If you are using an antenna and the signal strength is low, adjust the antenna or use a highly directional outdoor antenna or set-top antenna with a built-in amplifier. Dark, poor, or no picture (screen is lit), but sound is good Cables may not be connected correctly • Make sure that the antenna or cable TV is connected correctly and securely. See Connecting a cable or satellite box on page 16 or Connecting an antenna or cable TV (no box) on page 19. • Make sure that the video cables are connected correctly and securely to your TV. • The video cable(s) you are using may be bad. Try a new set. Picture settings may be incorrect • Adjust the brightness. See the TV brightness option in Settings menu on page 50 or Options menu on page 50. • Change to a different picture mode. See the Picture mode option in Options menu settings on page 51 or Advanced picture settings menu options on page 53. Picture settings may be incorrect • Adjust the contrast, color, and brightness settings. See the TV brightness option in Settings menu on page 50 or Options menu on page 50. Broadcast TV may be experiencing problems No color, dark picture, or color is not correct Cables are not be connected correctly • Try another channel. The station may be experiencing problems. • If you are using an antenna and the signal strength is low, adjust the antenna or use a highly directional outdoor antenna or set-top antenna with a built-in amplifier. • Make sure that the antenna or cable TV is connected correctly and securely. See Connecting a cable or satellite box on page 16 or Connecting an antenna or cable TV (no box) on page 19. • Make sure that the video cables are connected correctly and securely to your TV. • The video cable(s) you are using may be bad. Try a new set. Broadcast TV may be experiencing problems or may not be set up Only snow (noise) appears on the screen Cables may not be connected correctly • Try another channel. The station may be experiencing problems. • If you are trying to watch broadcast TV, make sure that Antenna TV is set up. See Setting up Antenna TV on page 42. • If you are using an antenna and the signal strength is low, adjust the antenna or use a highly directional outdoor antenna or set-top antenna with a built-in amplifier. • Make sure that the antenna or cable TV is connected correctly and securely. See Connecting a cable or satellite box on page 16 or Connecting an antenna or cable TV (no box) on page 19. Picture quality is Broadcast signal may be good on some weak channels and poor on others. Sound is good • If you connect to cable without a set-top box and experience poor picture quality, you may need to install a set-top box to improve signal reception and picture quality. Contact your cable TV provider about upgrading to a set-top box. 73