There is a 'Lip Sync' or 'Audio Sync' issue on some or all programs. DVR+ (CM-7500)

CM7500 DVR+

If you experience Audio sync issues, one or more of the following suggestions may correct the ‘Audio Sync’ ‘Lip Sync’ symptoms.

· Change the Audio setting in the DVR+ to stereo only.

o To check or change your HDMI Audio settings;
Press Menu on your remote control. Select Settings>TV and Audio Setup>Digital Audio Setup>HDMI> Choose Stereo Only or Auto Stereo/Surround, and exit.

o To check or change the Optical Digital Audio setting;
Press Menu on your remote control. Select Settings>TV and Audio Setup>Digital Audio Setup> Optical Digital Audio> Choose Stereo Only or Multi-Channel.

o To check or change "Midnight Mode";
Press Menu on your remote control. Select Settings>TV and Audio Setup>Digital Audio Setup> Midnight Mode> choose On or Off.

http://support.channelmaster.com/hc/en-us/sections/203897218-Adjusting-Audio-Video-Settings

· Change the audio setting in the TV to disable Dolby surround, Dolby Vision, Dolby Atmos, etc.

· Some TV’s have an ‘audio sync’ ‘Lip Sync’ adjustment in the Audio Menu.

· If audio is processed through an AV Receiver, there are additional audio settings in the AV Receivers menu system to test.

You can find the Quick Start Guide and complete User Guide here

 

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