Sharp Roku TV LC-43LB371U User Manual page 76

Symptom Possible cause
Broadcast TV may be
experiencing problems
or may not be set up
Cables may not be
connected correctly
Dark, poor, or
no picture
(screen is lit),
but sound is
good
Picture settings may be
incorrect
Picture settings may be
incorrect
Broadcast TV may be
experiencing problems
No color, dark
picture, or color
is not correct
Cables are not be
connected correctly
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
Picture quality is Broadcast signal may be
good on some weak
channels and
poor on others.
Sound is good
LC-43LB371U/LC-50LB371U 43"/50" 1080p, 60Hz, LED Sharp Roku TV
Try this...
• 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
page 15 or Connecting an antenna or cable TV (no box)
page 18.
• 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.
• Adjust the brightness. See the TV brightness option in
Settings menu on page
• Change to a different picture mode. See the Picture mode
option in Options menu settings
picture settings menu options
• Adjust the contrast, color, and brightness settings. See the TV
brightness option in
menu on page 50.
• 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
page 15 or Connecting an antenna or cable TV (no box)
page 18.
• 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.
• 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
• 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
page 15 or Connecting an antenna or cable TV (no box)
page 18.
• 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.
49 or Options menu on page 50.
on page 50 or
on page 51.
Settings menu on page 49
Setting up Antenna TV
on
on
Advanced
or Options
on
on
on page 41.
on
on
71