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You can configure the Digital Sound Out settings in the LG 55 Inch Class 4K HDR Smart LED TV (54.6'' Diag), Model # 55UM6910PUC. When your input signal is a PCM signal, the Digital Sound Output will be PCM. If the input signal is an MPEG and the Digital Sound Out settings are set to Auto, the Digital Sound Output will be PCM. The remote itself does not have a button to press to change to PCM, you have to use the remote control to access the Sound Out settings...^IFV
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