Sharp LC-55LB481U User Guide LC 55LB481U - Page 77

Troubleshooting, FAQ, Video and audio

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Troubleshooting LC-55LB481U 55" Full HD LED 1080p Sharp Roku TV Warning Do not try to repair your TV yourself. Contact authorized service personnel. Note If the problem is not solved by using these troubleshooting instructions, turn off your TV, then turn it on again. Note If you have any other questions about how to use your TV that are not covered in this User Guide, go to http://support.roku.com and select your TV brand and model. FAQ For the latest answers to Frequently Asked Questions, visit the Common Questions section at https://www.sharptvusa.com/support and the Support section of the Roku website (www.roku.com). Video and audio Symptom Possible cause Picture does not fill the screen or The picture size may need to be adjusted there are black bars around the picture TV is not on Cables are not connected correctly I don't see a Picture settings may be picture when I incorrect select an input Incorrect input may be selected Input source not detected TV input may be bad Broadcast TV may be experiencing problems TV channel or may not be set up does not appear Try this... • Adjust the picture size (aspect ratio). See the Picture Size option in Options menu settings on page 51. • Make sure that your TV is plugged into a working power outlet, and that your TV is turned on. (Your TV had a light on the front that indicates if your TV is turned off. See Status light on page 45.) • Make sure that the video cables are connected correctly and securely to your TV. • 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. • Adjust the contrast and brightness. See the TV brightness option in Settings menu on page 50 or Options menu on page 50. • Adjust the TV picture. See Advanced picture settings on page 53. • Make sure that the correct input is selected for the device you want to view. See Switching TV inputs on page 47. • 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 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 Setting up Antenna TV on page 42. 72

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72
LC-55LB481U 55" Full HD LED 1080p Sharp Roku TV
Troubleshooting
FAQ
For the latest answers to Frequently Asked Questions, visit the Common Questions section at
and the Support section of the Roku website (
www.roku.com
).
Video and audio
Warning
Do not try to repair your TV yourself. Contact authorized service personnel.
Note
If the problem is not solved by using these troubleshooting instructions,
turn off your TV, then turn it on again.
Note
If you have any other questions about how to use your TV that are not
covered in this User Guide, go to
and select your
TV brand and model.
Symptom
Possible cause
Try this...
Picture does not
fill the screen or
there are black
bars around the
picture
The picture size may
need to be adjusted
•
Adjust the picture size (aspect ratio). See the
Picture Size
option in
Options menu settings
on page
51
.
I don’t see a
picture when I
select an input
TV is not on
•
Make sure that your TV is plugged into a working power
outlet, and that your TV is turned on. (Your TV had a light on
the front that indicates if your TV is turned off. See
Status light
on page
45
.)
Cables are not
connected correctly
•
Make sure that the video cables are connected
correctly and
securely
to your TV.
•
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 settings may be
incorrect
•
Adjust the contrast and brightness. See the
TV brightness
option in
Settings menu
on page
50
or
Options menu
on
page
50
.
•
Adjust the TV picture. See
Advanced picture settings
on
page
53
.
Incorrect input may be
selected
•
Make sure that the correct input is selected for the device you
want to view. See
Switching TV inputs
on page
47
.
Input source not
detected
•
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 TV.
TV input may be bad
•
Connect a different device to the same input and check to see
if it works correctly.
TV channel
does not appear
Broadcast TV may be
experiencing problems
or may not be set up
•
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
Setting up Antenna TV
on page
42
.