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How to reconnect the TV when it is disconnected?
The main reasons and solutions of TV disconnection;

1. If there is something wrong with the TV's network settings, you can enter the network settings interface and try to reset the WiFi signal connected at home.

2. If there is a problem with the router settings or the router fails, you can restart the router to solve it. Or restore the router to factory settings and reset various network parameters to solve the problem; If it is a router hardware fault, you need to contact after-sales maintenance or replace the router to solve it.

3. Whether the network line and server of the network service provider are interrupted or damaged, so that the router cannot connect to the network. In this case, the TV will be disconnected from the network, so it is necessary to contact the network service provider to solve the network transmission problem first.

4. It is also possible that the network is abnormal due to the problem of TV system. You can restart the TV to solve it. If necessary, you can enter the system setting interface to restore the TV system to the factory setting state or upgrade to the latest version.

5. After the above problems are investigated, the TV still can't surf the Internet normally, which may be caused by the failure of network module, antenna, internal circuit or motherboard, etc. It is necessary to contact the TV after-sales service for comprehensive inspection and maintenance.

Television is mainly composed of tuner, audio head, audio channel, common channel, synchronous scanning channel, color control display and power supply. It works as follows.

The signal received from the antenna passes through the tuner, selects the high-frequency TV signal, amplifies it, and then sends the fixed intermediate-frequency TV signal.

The common channel consists of an IF amplifier, a video detector, a video amplifier and a picture tube. The IF amplifier amplifies the IF signal from the tuner to a sufficient amplitude, which is detected by the video detector, removes the IF carrier, recovers the image signal, and converts the second audio IF signal. After the video is amplified, the image signal is sent to the cathode emitting electrons in the picture tube to control the aggravation of the electron beam emitted by the picture tube, and the image can be displayed on the screen.