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HDMI cables connect me with Dish Satallite.
Not totally dead when first turned on. I had inadvertently had the input changed to air. Could see enough to know there was no signal; got out the instruction book to count how many lines I needed to go to get it back to HDMI. Sound came back.
When first turning on, there is an image, very dim, darker in center third of screen, that only lasted long enough for me to see the "no signal" message. Right now I'm "listening" to FOX news, screen appears totally dark. It's been on for about 1/2 hr. No images visible with a flashlight. When looking down inside from the top there are no lights on. Aren't there supposed to be "backlights" (is that the right term) visible?
I hope this makes sense.