TECHNICAL DESCRIPTION (COMMENT)
If the audio sound is not output, the multivision display may have a problem. In addition, if any of the speakers or tweeters is short-circuited, the protection circuit inside the multivision display disables all the speakers or tweeters to sound. Therefore, if all the speakers do not output sound, the speaker or tweeter circuit may be shorted or the speaker or tweeter may be defective.