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Troubleshooting
FAQ
For the latest answers to Frequently Asked Questions, visit Common Questions section of the
http://www.sharpusa.com/manuals/hd.aspx
Video and audio
Symptom
Picture does not
fill the screen or
there are black
bars around the
picture
I don't see a
picture when I
select an input
TV channel
does not appear
66
Warning
Do not try to repair your Sharp Roku TV yourself. Contact authorized service
personnel.
Note
If the problem is not solved by using these troubleshooting instructions,
turn off your Sharp Roku TV, then turn it on again.
and the Support section of the Roku website (www.roku.com).
Possible cause
The picture size may
need to be adjusted
Sharp Roku TV is not on
Cables are not
connected correctly
Picture settings may be
incorrect
Incorrect input may be
selected
Input source not
detected
TV input may be bad
Broadcast TV may be
experiencing problems
or may not be set up
LC-43LB371U/LC-50LB371U 43"/50" 1080p, 60Hz, LED Sharp Roku TV
Try this...
• Adjust the picture size (aspect ratio). See the Picture Size
option in
Advanced picture settings menu options
• Make sure that your Sharp Roku TV is plugged into a working
power outlet, and that your Sharp Roku TV is turned on. (Your
Sharp Roku TV had a light on the front that indicates if your
Sharp Roku TV is turned off. See
• Make sure that the video cables are connected correctly and
securely to your Sharp Roku TV.
• 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.
• Adjust the contrast and brightness. See the TV brightness
option in
Settings menu
page 47.
• Adjust the TV picture. See
page 48.
• Make sure that the correct input is selected for the device you
want to view. See
Switching TV inputs
• Make sure that the device connected to the input is turned on.
• Make sure that the cord to and from the device is connected
firmly and correctly to the device and your Sharp Roku TV.
• Connect a different device to the same input and check to see
if it works correctly.
• Try another channel. The station may be experiencing
problems.
• Make sure that the incoming signal is compatible.
• If you are trying to watch broadcast TV, make sure that
Antenna TV is set up. See
Status indicator
on page 9.)
on page
47
or
Options menu
Advanced picture settings
on page 46.
Setting up Antenna TV
on page 41.
on page 49.
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