What should I do if the sound suddenly disappears when the LCD advertising player is in use?
1. First, open the settings of the ad player and check the volume settings to see if there are any changes? If it is not the reason here, it is estimated that the video playback itself has some defects, we can copy the content that is played into the sound, and then play it on the computer to see if it is the problem.
2. Restart the machine and equipment, and then play again. If it no longer exists, then we must check whether it is a wiring problem or an unstable voltage that caused the speaker to burn out. At this time, we must measure it with a multimeter and check it out one by one;
3. If none of these methods can be used to solve the cause, then we can contact the production supplier, which is safer. Manufacturers must be more professional, these problems can be fed back and can be resolved.

