1. Check whether the signal source connection of the TV is normal and stable. For example, if the TV is connected to a cable TV signal, please check whether there is a problem with the cable. If there is nothing wrong with the cable, you can try to switch to other channels to solve it. If the TV is connected to a DVD player or a digital TV set-top box, be sure to check whether the connecting cable is in good contact and repair it if it is loose. In addition, you can also switch channels or pictures to eliminate the problem of program source.

2. The TV hardware fault causes this problem, mainly because the TV display system, such as circuit switch fault, high-voltage board fault, power shortage, display screen fault, motherboard circuit fault, capacitor fault and other component faults, may lead to the failure to display the picture. It is recommended to contact the TV after-sales service to conduct a comprehensive inspection and warranty of the TV.