What is the reason why there is no signal on TV?

The reason and solution of TV no signal: \x0d\ 1. There is a problem with the signal source input of the TV, resulting in no signal; For example, if the TV is connected with cable TV signal, set-top box and DVD player, check whether the connecting wire between them is loose, resulting in poor contact, and then reconnect and fix it to solve the problem. \x0d\2。 The signal source mode of the TV set is not switched correctly, resulting in no signal. If a cable TV signal is connected, you should switch to TV mode, and the set-top box or DVD player should switch to AV or HDMI mode. Generally, you can switch signal source modes one by one to see if there are any pictures. \x0d\3。 If there is a problem with the transmission line of cable TV signal or digital TV signal, it is generally necessary to contact the signal service provider for handling. Keep the signal supply normal and the lines unblocked, and the problem can be solved. \x0d\4。 If the signal detection fails due to the hardware failure of the TV, such as the short circuit between the interface and the motherboard, or the failure of other components, the TV motherboard will not detect the input signal. At this time, it is recommended to contact TV after-sales service for comprehensive inspection and warranty.