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powering off set-top or TV causes format setting to change

by EW1965 / January 27, 2009 5:03 AM PST

tv = Panasonic Viera - 720p
HD box = Scientific Atlanta Explorer (PVR)
connection type = HDMI
format settings = 720p (only), 16:9

I have been using above for six months. Usually, box displays 720p for all channels (SD and HD). Occasionally I noticed that the setting got changed to 480i. I figured my kids caused this to happen somehow randomly pushing the remote. The past few days however, it's happening several times a day! I then noticed the setting changes from 720p to 480i whenever powering off the TV or the box (regardless of what is shut off first). I also noticed the setting change from 720p to 480i when I pulled out the hdmi cable from the box.

Tonight I will either try component cables or another hdmi cable.

Does anyone know what the problem is?

Thanks.

EW

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