Yes, a bad LVDS (Low-Voltage Differential Signaling) cable can cause the TV screen to go black.
Here’s how:
Signal Interruption
The LVDS cable is responsible for transmitting the video signals from the mainboard or the source device (like a TV tuner, media player inside the TV etc.) to the display panel. If the cable is damaged, for example, if there are broken wires inside due to physical stress, wear and tear over time, or if it has been pinched or bent in a way that disrupts the electrical connection, the video signals won’t be able to reach the display properly. As a result, the screen may go black as there is no valid video information being sent to it.
Poor Contact
Even if the cable isn’t physically damaged but has poor contact at either the connection point on the mainboard or on the display panel side (perhaps due to oxidation, loose fitting, or dirt interfering with the connection), it can lead to an intermittent or complete loss of the video signal. This can also make the TV screen turn black as the display isn’t receiving the necessary data to show an image.
Signal Degradation
In some cases where the cable is starting to malfunction, although it may still be carrying some signals, the quality of the signals can degrade. If the degradation is severe enough, the display panel may not be able to interpret the signals correctly and may default to showing a black screen instead of a proper image.
So, a faulty LVDS cable is definitely one of the possible causes when a TV screen goes black.
Post time: Dec-16-2024
