WarrenWhite
New member
Once the TV has no signal source, you can't enjoy the fun of TV, so you must want to know what's wrong behind it. Here are the possible reasons for why TV has no signal source.
1. When the TV has no signal source, the first thing we need to do is to check the video line of the TV, and the video line of the TV is prone to two problems: one is that the video line is not inserted in the right position, and the other is that the video line is not inserted at all. If we find these two problems, we can deal with them accordingly, so that the TV has a signal source.
2. Sometimes the reason why TV has no signal source is that the video input source of TV is wrong. At this time, we should re select the correct video input source according to the connection mode. For example, if it is cable TV, we need to choose cable TV to have signal source, while if it is set-top box, we need to choose HDMI. Only by selecting the right input source, the problem of TV without signal can be solved.
3. Sometimes the TV suddenly has no signal, it may also be because the hardware of the TV has failed. This problem is more complex because there are many hardware in the TV. No matter the power module fails, or the high-voltage board or other hardware fails, the TV will have no signal. Therefore, if we suspect that it is the hardware problem of the TV, we'd better ask the TV repairman to deal with it.
Of course, in most cases, the TV has no signal, not because there is a problem with the hardware of the TV, but some other small problems, so don't panic. You can find out the reason carefully by yourself. It's not too late to turn to the repairman when you really have no way to solve it.
1. When the TV has no signal source, the first thing we need to do is to check the video line of the TV, and the video line of the TV is prone to two problems: one is that the video line is not inserted in the right position, and the other is that the video line is not inserted at all. If we find these two problems, we can deal with them accordingly, so that the TV has a signal source.
2. Sometimes the reason why TV has no signal source is that the video input source of TV is wrong. At this time, we should re select the correct video input source according to the connection mode. For example, if it is cable TV, we need to choose cable TV to have signal source, while if it is set-top box, we need to choose HDMI. Only by selecting the right input source, the problem of TV without signal can be solved.
3. Sometimes the TV suddenly has no signal, it may also be because the hardware of the TV has failed. This problem is more complex because there are many hardware in the TV. No matter the power module fails, or the high-voltage board or other hardware fails, the TV will have no signal. Therefore, if we suspect that it is the hardware problem of the TV, we'd better ask the TV repairman to deal with it.
Of course, in most cases, the TV has no signal, not because there is a problem with the hardware of the TV, but some other small problems, so don't panic. You can find out the reason carefully by yourself. It's not too late to turn to the repairman when you really have no way to solve it.
