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You don't do it on the TV, you do it on the HDMI source.
The TV will display only what it is fed. If you feed it 480p, that's what you get.
Similarly for 1080i or p.
How do you get TV? What HDMI source do you have?
A DVR and an HDMI wire
OK, somewhere on the DVR's menu will be a selection for output resolution. And I'm guessing that the program you're playing back is in either 1080i or 720p HD? If so and the TV's only reading 480p, it HAS to be a setting on the DVR.
I got it. Thank you very much!