Internet Connection Not Available / DLNA Mode Not Operating
If the MAC address (a unique identifier number) of your PC or modem has been permanently registered, it is possible that your TV might not connect to the internet. In such a case, the MAC address is authenticated each time when you connect to the internet. This is a precaution against unauthorized access. Since your TV has its own MAC address, your internet service provider cannot validate the MAC address of your TV. For this reason, your TV cannot connect to the internet. Contact your internet service provider and request information on how to connect a different device, such as your TV, to the internet.
It is also possible that the connection may not be available due to a firewall problem. If you think this causes your problem, contact your internet service provider. A firewall might be the reason of a connectivity and discovery problem while using the TV in DLNA mode or while browsing via DLNA.
Invalid Domain
Check if the ethernet cable is connected properly.
Check if the Network settings are correct.
Ensure that you have already logged on to your PC with an authorized username/password and also ensure that your domain is active, prior to sharing any files in your DLNA server program on your PC. If the domain is invalid, this might cause problems while browsing files in DLNA mode.
The TV sometimes makes a cracking sound.
This is not a malfunction. This happens when the cabinet slightly expands or contracts according to the changes in the ambient temperature. This does not affect the TV’s performance.
Miracast image/audio cannot be output to the TV.
Check if the pairing is made properly.
