Question about Sharp Aquos LC-42D62U 42 in. LCD HDTV

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Horizontal scan lines from bottom to top of my HDTV.

I have a Samsung 40" LCD Full 1080p HDMI TV and as of Friday morning started to notice very faint horizontal lines pulsing from the bottom to the top of the tv. they are continuous as well. I've been to many forums and most of the people claiming the problem to be is my cable box not grounded, or it being a "ground loop" problem that would do this. Now I'm not a very tech savvy person when it comes to HDTV's considering this is my very first. But the first time I noticed these faint lines was while playing my Xbox 360with HDMI cables. I switched to component and they were still there. It's noticeable on the Dashboard and games when it's dark enough to see the the lines. I've talked to several people who claim the firmware updates for my TV would fix this but I am cautious as to whether this will void my 4-year warranty or not. I don't want a run around from Samsung or BestBuy. Any help guys? Oh, and btw, my TV model is the LN40A530 series.

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Hi There,

I stumbled across this when i was searching for a fix for the same problem, you're top hit on google for "LCD Horiztonal scan lines" :-)

Anyways, i had the exact same issue, didn't turn up any solutions on the web so i started troubleshooting, and i've fixed it!

My signal cable was running for approx 1metre right along side the 240v / 50hz (Scotland) power cable for the screen. When i moved the signal cable away from the power cable, the lines faded a lot.

Now i've routed the two cables seperately, and i have no more issues! Hope this helps you!

-c

Posted on Nov 24, 2008

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