When the LCD screen is connected to the computer host via an HDMI cable, if no sound is played, it may be because the audio signal is parsed on the monitor side. To solve this problem, you can take the following methods:
Check the monitor interface: Check if the monitor has a 3.5mm headphone interface (usually black and the same size as the green audio output interface on the computer). If you find such an interface, just connect the audio device here to play the computer sound through the monitor.
Adjust the computer sound settings: Find the speaker icon in the computer taskbar, right-click it, and then select the "Sound Settings" option. In the sound settings page, find and click the "Speakers" option. In this way, you can also output the sound through the audio interface of the computer host.
Make sure the connection is correct: If you are using an HDMI cable to connect, make sure the HDMI cable is plugged in and the TV's audio output has been selected as HDMI. If you are using a VGA cable to connect, make sure the VGA cable is plugged in and the TV's audio output has been selected as the TV speaker.
Check the computer audio settings: In Windows, find the audio settings through the Control Panel, and then select the "Playback Devices" tab, and make sure the TV is selected as the default device. If there is still no sound, you can try uninstalling and reinstalling the computer's audio driver.
Use an external audio device: Consider purchasing an external audio device, such as speakers or headphones. These devices can be connected to the TV via a 3.5mm audio cable, thus solving the problem of sound output.
Through the above methods, you can effectively solve the problem of no sound when the LCD screen is connected to the computer host.
