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Toshiba 46HM84 46-Inch TheaterWide HD-Ready Rear-Projection DLP

2/8/200615-19-32… Toshiba 46HM84 46-Inch TheaterWide HD-Ready Rear-Projection DLP TV

I have a Samsung LCD TV that is 3 years old and a cable/DVR box through Cox Cable. The cable box has an HDMI port on it. I'm trying to hook my cable box to my TV with an HDMI cable. I can get a picture but no sound. I've tried 2 different cable boxes thinking maybe I had a faulty box but no luck. I've also hooked up a PS3 and a blue ray player to same HDMI port on my TV to ...

I noticed that Plasma tvs tend to be so much cheaper than LCD tvs. Does anyone know why? Is there some problem with Plasma that makes it so? Suggestion: Plasma is following Beta's example.

i have this problem with my tv, like every 30mins to 1 hour it randomly switches from normal tv to a channel called "dtv" then "hdmi" then a clock in the middle, then like 3seconds after it switches back to what i was watching. its not sky, because it happens with my dvds and freeview… how do i stop this? it gets really annoying!