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Re: TV signal problem?
Look on the lcd website and see if there is an update for the lcd bios. if you play a dvd is the issue the same. try using a different connection to the cable box sometimes thats the issue. try channel 3 /4 then composite video then component 3 color then DVI or svideo with one of these you may see and improvement in video and sound
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Test the backlight first.
1. Play something that should have a bright fast moving picture.
2. Put you face really close to the screen to see if you "sort of" see the picture.
If you see movement, that means the backlight is out. $$$
If this is an LCD television take the set into a dimly lit room. Tune to a channel with sound and hold a bright flashlight next to the set shining it into the screen at all different angles. Check for any movement inside the picture. This is easiest in the center where thee is usually the most action. If you see movement in the screen you have a bad backlight or your inverter is not working. This may be a bad power supply. If not then the whole panel may be bad, you may have a bad digital board or main board, your LVDS cable may be bad (unlikely), or your whole panel may be bad. Of course it could be something else... Good luck.
I recommend doing an automatic channel scan to ensure you are receiving reception, the second thing to check is that are you using a digital set top box and do you have the tv on the correct input setting, eg, av input, etc.
You can also test this theory by getting another tv that you know has channels and works and pug it into the antenna of the unit you are having problem with. I hope this helps.
This is probably a combination of 2 things. In both causes 1 and 2 below, I would suggest checking the TV with a BluRay Player with BluRay disc connected using an HDMI Cable. If you complain about this, then the TV is probably not that great. Expect a $200 jump to a better model at the least (but this depends on what you have now). Honestly, this is fairly normal and wont change much with the next TV.
CAUSE 1: Motion BLUR
Motion blur occurs when fast moving objects are displayed on LCD TVs. Basically, it takes time for the LED lights that make up the picture to turn ON and OFF, when and object shown on the TV is moving faster than the LCD TV can turn these lights ON and OFF, you see the trail left behind as the lights dim to OFF. This look like blur because you see the current image and the trail of the old images. 120HZ and 240HZ LCD TV are supposed to improve this but honestly, they are at times 300+ dollars more and not really worth it. Very little difference except in some few cases.
CAUSE 2: Digital TV
Digital signals are hit or miss. Good or BAD. If you are watching Cable, Satelite or Antenna; it is likely you are seeing some BLOCK NOISE. This block noise is caused by missing information or Noise in the video signal. This will cause the picture to Pixilate (you see blocks and things start looking blurry too). This happens with poor signals. This also happens with the HD channels when they have more information than bandwidth (more data than that have space to send it...image shoving an elephant into a VolksWagon Beetle)