1, check whether there is no signal due to poor line contact of signal source, such as the antenna signal input to the receiver and the connecting line between the receiver and the TV set, so as to ensure smooth and firm lines.

2. Secondly, check whether the alignment direction of the satellite antenna has changed. You can readjust the satellite to ensure stable signal quality and signal strength, and then try to search the channel again.

3. Then check whether the signal source mode of the TV has been switched correctly. For example, when the TV is connected to the receiver through an AV cable, the signal source must be switched to AV mode to display the picture of the receiver, otherwise there will be no signal.

4. If there is still no video signal after the above methods are checked, it may be caused by satellite antenna failure, receiver failure or TV failure. It is recommended to contact the corresponding after-sales service to eliminate the failure.