Your TV turns on but no picture or sound? Sometimes, all you need to do in order to get picture on your TV is to restart it, i.e. turn it off and back on after a few minutes.
If you didn't get picture after restarting the TV, check out the other solutions.
Note: You can also do a "power reset" of the TV, which involves unplugging it from power socket and presssing and holding the power button for at least 10 seconds. Afterwards, plug the TV back in the power outlet and turn it on.
Maybe a software-related issue on behalf of the mobile device is the reason for you being unable to get picture on the TV. Try restarting the mobile device and then reconnecting it to the TV.
Maybe the connection between the mobile device and the TV wasn't established properly. Try disconnecting the mobile device from and reconnecting it to the TV after a few seconds.
Maybe your mobile device and the TV are not compatible. To test this, try connecting the mobile device to another TV. If the other TV recognizes the mobile device, that means that your device is working properly.
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