Volume will not adjust on projector

Here are a few actions that may help to correct the issue: 

• Disconnect and reconnect the audio source.
• Connect the audio source to a different speaker system, such as headphones or a different TV and verify if the audio source is the cause of the problem.
• Try using a different audio cable to verify that the current one you are using is not faulty.
• Connect a different audio source to the monitor/projector and verify if the problem persists.
• Change the batteries in the remote control. 

Note: We recommend you only use the ViewSonic remote controls for ViewSonic products, we cannot guarantee that other manufacturer remotes will work or have full functionality on our products.