I live in thailand so communication is a problem. i recently installed sattelite to my old style 28 inch jvc tv and the pictures were good and inspired me to update to a 42 inch lcd expecting the pictures to be very good. the pictures from the dvd player are great but the pictures from the sattelite are much poorer. the movies etc are better than the sport which is disapointing as this is what i watch most. the picture improves if i set the picture size to 4.3. we tried a more powerfull lead from the box to the tv but this made no difference.
First, did the satellite company install an HD receiver? Second, are you using either component or HDMI cables from receiver to TV? Still there are two factors that would produce your problem.
1. Color calibration
2. Signal strength
Proper color calibration is what makes SD actually GOOD on HDTVs. Low signal strength will create a slow data situation. Slow data will not provide enough information per second for the TV to display a complete, error free picture so your TV has to interpolate or "guess" what colors should go in the pixels that it didn't get the data for.
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Feb 25, 2015 - Uploaded by Awesome Things
JVC LT-46AM73 LCD TV won't turn on after power outage. ...LCD & LED TV Repair - No Image & Blank Black ScreenFlashlight Test - How to ...
Does the Genie box have screen settings in in? Sometimes hd will show in smaller screens. Makes the picture nicer. If you adjust the screen size with your remote the high definition "niceness" will not be there.
Are you just using an antenna? All TV's today operate on a digital signal. If the signal is somewhat weak, no picture and sound will occur at all. On the old style TV's, you would get at least some picture and sound. That is because it ran on an analog signal. If you are using an antenna, either you need a much better antenna installed at a higher height, or you live in a rural mountainous area where there is few TV stations or the signal is being blocked by large buildings or hills.
If this is a brand new TV, that is connected to a cable TV provider, you have to do a channel scan search. This finds the channels and locks them into the memory of the TV. You only have to do this once, unless you have a power failure or accidentally unplug the TV.
I am deeply sorry but you will need to replace the backlight bulbs. These are not available.
Look on Ebay for a 32" JVC with a broken LCD Screen. Buy it and use these bulbs to fix your TV. I am sure there will be a few good ones in the broken TV. It's that or list it on Ebay for $50 and expect to get about 200-300.
LCD Panel repair for this problem is $500 for parts so you are stick with repair yourself or sell.