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Usually, with this problem, it's due to low signal strength. Digital TV needs a good quality DTV antenna. GOOD QUALITY cables and connectors are also a good idea. If you live in a low signal strength area, u may also need an amplified antenna.
Try connecting any other device to the TV and check to confirm whether the issue is with the TV. Then, try resetting the TV to the factory settings. If the issue persists, try Power resetting the TV and check. If the issue still persists, the TV may require service.
I'd stay away from them personally because of the following reasons: 1. No video on demand (VOD) or electronic program guide (EPG) 2. No PVR function - would require a PVR to record 3. CableCARD units cost more 4. CableCARD may not get the latest channel releases 5. Customer support is lacking as not many people are using CableCard
there are 2 types of flicker, one is the lamps that drive the display and the second is the sync signal of the video. I assume the video sync is the flicker you see, I would try connecting a different way to make sure it is not the tv, connect using the aux /rca connectors to cable box. and or connect using the cable direct bypassing the cable box. I have seen several complaints about the hdmi cable signal being incorrect in some way, this is the same issue that the svideo connector had in its early adoption signal was too hot or too low. another thing to watch out for is the low light sensor on the front of tv if it gets an incorrect reading it can flicker the back light though it should be slow in doing so. some times the flicker you see is not flicker but ac running through the sides of the picture from an ungrounded cable source. how does it perform if you play a dvd player , with and without the cable box connected.
You need to either connect to the TV the cord that your computer monitor would connect to or have a video card that supports S-Video and the appropriate cables S-Video and RCA audio out cables for either.
Then you must select the appropriate input on your TV, such as VGA or S-Video (and audio in.) .
Hi Sarah, You may want to try lowering the resolution of your computer down first before connecting the 42PX5D. Since everything seems to be working except when you get to the desktop then your PC might be set to a resultion that's too high for the LG (am not 100% sure, but I think that LG's max res is 1024 X 768). Try to adjust your PC's resolution while still connected to a regular monitor, right click on any free/clear part of your desktop and click properties. Display Properties window will pop-up, click on Settings tab, adjust Screen resolution towards the left,trym lowest posiible, color quality, again lowest possible. Then hook it up to the LG. If desktop now displays in LG, do the same again but this time going up. Do it by increment and stop when LG screen goes blank. Press escape to go to setting prior to blank. Adjust color quality best setting acceptable to the LG. Good luck and hopes this work out for you. Regards.