I have 52"hdtv, before when i put on HDchannels it would change format from 480i to 1080i/720p now it wontHELP

cableguy replaced my cablebox because old one wasnt working correctly with ONdemand, but now when i switch to hd channels it stays in 1 format i asked him if he could make it switch formats like 1080i and 720p and he said he didnt know how to do it and just told me to make the picture strectch and zoom in. the cableguy a year ago made it work, anyone know how to do it?
I have 52%26quot;hdtv, before when i put on HDchannels it would change format from 480i to 1080i/720p now it wontHELP
Streching and zooming has nothing to do with 720p or 1080i.



Some HD programs transmit in 720p and some in 1080i.

It is quite possible that the new box outputs in a single format (although it should give you the option). Go to the set-top box menu or setup and see if you can select the output option.

It should make very little difference on your TV whether you send 720p or 1080i.

pc or mac

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