What if the projector in the hotel has no signal?

If the projector in the hotel has no signal, you can take the following measures:

1. Check the connection of the projector: First, check whether the power cable, video cable and audio cable of the projector are plugged in, so as to ensure stable and reliable connection. If it's a computer or mobile phone, make sure the connection mode is correct, such as USB, HDMI, VGA, etc.

2. Check the settings of the projector: Open the settings menu of the projector, and check whether the settings such as resolution and signal source are correct, so as to ensure matching with the access equipment.

3. Check the input devices: If there is no signal from the projector, there may be something wrong with the input devices, such as computers, mobile phones and DVDs. Try restarting the input device or replacing another device.

4. Check the light bulb and filter screen of the projector: If the light bulb and filter screen of the projector are out of date or damaged, it may affect the signal output of the projector and need to be replaced.

5. Contact the hotel technician: If the above methods can't solve the problem, you need to contact the hotel technician to repair or replace the equipment in time.

In a word, the lack of projector signal may be caused by many reasons, which need to be checked and eliminated one by one. If you can't solve the problem yourself, you can seek professional help.