A microphone suddenly came from the projector in the hotel.

There may be something wrong with the color wheel.

1, it is likely that the small stereo of the projector is overheated and the alternating current produces crying. 2. Although the projector comes with stereo, it is not recommended. First, the sound is too low. Second, long-term use will accelerate the life of the projector. 3. Check the cable of the HD player, then turn on the projector and set the factory settings and sound format in the menu. 4. Connect the notebook to the projector and test it for several hours to see if it is a problem with the projector.