What is the cause of no signal in projector? It turns out that this is no signal processing method

Friends who often use the projector can encounter some problems, such as the projector can not be turned on when it is powered on, or the laptop screen is on but the projector screen is not bright. Are these situations the projector failure or misoperation in use? Now for the projector no signal what is the reason for this problem, we put forward a solution, let's have a look.

Here's the solution

1. Check whether the projector is connected to the computer with VGA cable or HDMI cable.

2. If HDMI is selected, please check whether HDMI is connected to the projector.

3. If the connected device is a desktop computer, you need to adjust the resolution of the computer according to the resolution of the projector. Generally, the refresh rate can be adjusted to 60 Hz, some of which are higher. It is better to try it one by one, then turn it off, use VGA again to connect the projector, and then turn it on. If the projector is connected to a notebook, you need to press FN + FX (F1 -- F12, one of the buttons to switch the display) in the lower left corner of the keyboard. Generally, there are three modes for switching double display. You can press once, twice, and three times at the same time to try.

4. If the above operation is OK and the projector still shows no signal, you can try to change a connecting cable.