Samsung 450 Series - Troubleshooting Network Connection Failures; Resolving Wireless Network Connection Issues

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English
Issues Solutions and Explanations
The video is OK but
there is no audio.
●
If you are using an HDMI connection, check the audio
output setting on your PC.
Network Connection
for LCD 550 series
The wireless network
connection failed.
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The Samsung Wireless USB dongle is required to use a
wireless network.
●
Make sure the network connection is set to Wireless
(General).
●
Make sure the TV is connected to a wireless IP sharer
(router).