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the signal resolution and output type of the
connected device, and
press (Home) > Settings > All settings >
Picture > Picture Format > Original.
Computer picture is not stable
Make sure that your PC uses the supported resolution
and refresh rate.
(Home) > Settings > All settings > Picture >
21.6
Sound
No sound or poor sound quality
• Check if the sound settings of the TV are OK, press
the volume or mute key.
• If you use a digital receiver (set-top box), check if
the volume on this receiver is not set to zero or mute.
• Check if the TV - the audio signal - is properly
connected with the Home Theater System, if you use
such a system for the TV sound. Check if you
connected the HDMI cable to an HDMI1
ARC connection on the Home Theater System.
• Make sure that the TV audio output is connected to
the audio input on the Home Theater System.
Sound should be heard from the HTS (Home Theater
System) speakers.
Sound with loud noise
If you watch a video from a plugged in USB flash drive
or connected computer, the sound from your Home
Theater System might be distorted. This noise is heard
when the audio or video file has DTS sound but the
Home Theater System has no DTS sound processing.
You can fix this by setting the Digital out format of
the TV to Stereo.
Press (Home) > Settings > All
settings > Sound > Advanced > Digital out format
21.7
HDMI - UHD
HDMI
• Note that HDCP (High-bandwidth Digital Content
Protection) support can delay the time taken for a TV
to display content from an HDMI device.
• If the TV does not recognize the HDMI device and
no picture is displayed, switch the source from one
device to another and back again.
• This is an Ultra HD TV. Some older devices -
connected with HDMI - do not recognize an Ultra HD
TV electronically and might not work correctly or
show distorted picture or sound. To avoid the
malfunctioning of such a device, you can set the
signal quality to a level the device can handle. If the
device is not using Ultra HD signals, you can switch
off Ultra HD for this HDMI connection.
If the picture and sound of a device connected with
HDMI is distorted, check if a different HDMI Ultra
HD setting can solve this problem. In Help > User
manual, press the color key
up HDMI Ultra HD.
• If there are intermittent sound disruptions, make
sure that output settings from the HDMI device are
correct.
HDMI EasyLink does not work
• Check if your HDMI devices are HDMI-CEC
compatible. EasyLink features only work with devices
that are HDMI-CEC compatible.
No volume icon shown
• When an HDMI-CEC audio device is connected and
you use the TV Remote Control to adjust the volume
level from the device, this behavior is normal.
21.8
USB
Photos, videos and music from a USB device do not
show
• Check if the USB storage device is set to Mass
Storage Class compliant, as described in the storage
device's documentation.
• Check if the USB storage device is compatible with
the TV.
• Check if the audio and picture file formats are
supported by the TV. For more information, in Help,
press the color key
up Multimedia.
Choppy playback of USB files
• The transfer performance of the USB storage device
may limit the data transfer rate to the TV which
causes poor playback.
21.9
Wi-Fi and Internet
Wi-Fi network not found or distorted
• Check if the firewalls in your network allow access
to the TV's wireless connection.
• If the wireless network does not work properly in
your home, try the wired network installation.
Internet does not work
• If the connection to the router is OK, check the
router connection to the Internet.
The PC and Internet connection are slow
• Look in your wireless router's user manual for
information on indoor range, transfer rate and other
factors of signal quality.
• Use a high-speed (broadband) Internet connection
for your router.
DHCP
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