32" Vizio LCD, 1080p. In the audio setup, I find the audio mode shows only "Flat" available. When I select audio mode to attempt to change it, at the bottom of the setup screen is a note "not available". I am unable to change to any of the other modes such as Rock, Jazz, etc. as listed in the manual. This is hooked up to our cable box via the 5-wire component cables. Thank you.
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