The TV replacement led lcd tv screens suddenly lost its image, but there was sound. What’s the matter?
When the TV suddenly has no image but has sound, there are three possible causes of this phenomenon, which may be video cable failure; It may be the fault of the imaging component; It may be screen power failure.
The TV replacement led lcd tv screens suddenly lost its image, but there was sound. What’s the matter?
The reasons and solutions for the sudden absence of image but sound on the TV are as follows:
1. Video cable failure: If the LCD TV is equipped with an external set-top box, it is necessary to use two additional data cables to connect with the LCD TV. When there is a problem with the transmission line of video signal, the TV will have sound and no image. Generally, there are two reasons for this situation. One is that the data cable is loose, and the other is that there is a problem with the data cable itself. However, regardless of the reason, after replacing the video data cable, the TV will return to normal.
2. Imaging component failure: The structure inside a LCD TV is relatively complex, and damage to many components can lead to images and no sound on the LCD TV. Generally, it is caused by a malfunction of a display component, such as a burned display tube or a short circuit in the display circuit. “This type of problem requires disassembly and testing, and individual users cannot repair it themselves. They can either find after-sales testing or professional maintenance personnel to detect the specific fault location.”.
The TV replacement led lcd tv screens suddenly lost its image, but there was sound. What’s the matter?
3. Screen power failure: Although the external power supply of the LCD TV is unified, the power supply is actually used to supply power to two parts of the TV, one is the backlight module, and the other is the LCD panel. If the transformer, circuit board, and circuit that supply power to the LCD panel fail, the screen will have sound but no image.