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Horizontal Lines slowly moving up my Bravia- OOOH!

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Old 02-25-2006, 11:19 PM   #1
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Default Horizontal Lines slowly moving up my Bravia- OOOH!

We've thoroughly enjoyed our 32in Sony Bravia HDT LCD for the approx month now that we've had it. But for the first time tonight I noticed horizontal lines (2 or 3 at the same time, spaced about 7 inches apart, maybe 0.1 in wide) that slowly start from the bottom and move slowly upward. They take about 12 sec to travel up the screen. Once noticed, they catch your eye and are very visible. Another TV (smaller LCD) that we have did not show the effect. The Bravia had been on for a few hours. I turned off the set for about 15 minutes and just now checked again and now they're not there!
Can anybody splain the problem?
Thanks.
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Old 02-25-2006, 11:43 PM   #2
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The problem might be the source content. What were you watching when this happened?
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Old 02-26-2006, 01:52 AM   #3
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Sounds like 60 cycle hum. Is your TV hooked up via component wires? And if it is, is the power cord or any other power source near them?
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Old 02-26-2006, 03:34 AM   #4
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Source content ... not sure (1) our other TV didn't show the lines (2) when it was happening they appeared on all the channels and (3) also, (not sure if this would apply to source) when I froze the frame they still kept on comin.

I am using component cables.

I have several things hooked up around/into the unit. Like a two channel DVD cable box (on), an amp (on), and DVD player (off).
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Old 02-26-2006, 03:45 AM   #5
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All the wires are in fairly neat order - but sort of close to the power strip - I'll fix that. But what I don't understand is that the lines disappeared all by themselves for no apparent reason - do hope they don't come back.
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Old 02-26-2006, 05:31 AM   #6
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AC power runs at 60 Hz and video runs at 59.94 Hz. This slight difference in timing may cause interference in the analog signal if it is near an AC source. The inference will be two slight lines that slowly roll up the screen. If you properly ground all of the components in your system and make sure you have enough shielding on you analog cables this should not be a problem ever again. Or if you use a digital signal then this wouldn’t be a problem either. If you pause your source and the lines continue to move then the hum is somewhere between your source and your TV but if they stop when you pause the source then the hum is recorded in.
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Old 02-26-2006, 03:45 PM   #7
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Thanks 1080PsF and Max2000.
Max, we were watching the Olympics last night... especially noticeable over the white ice and any red background. BTW, I wrote above that I had a DVD cable box. I meant to say DVR box. When I replayed the same programs this AM I didn't see any lines... so not the source.
1080PsF, I have a digital source, so could the interference that you mention above possibly happen with a digital signal?
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Old 02-26-2006, 04:10 PM   #8
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But you have this hooked up with component cables correct? And that's an analog signal. If you hooked it up with a HDMI cable you wouldn't have this problem.
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Old 02-26-2006, 04:20 PM   #9
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Sometimes if I have too many Bong hits, I get paranoid and think I see things in my 45 AQUOS that arent there. This does not seem to be your case! A/C power in your house is causing the lines, maybe your microwave was on, maybe a hair dryer or the coffee pot. I bought a monster 3500MKII to get rid of A/C interfering with my system. (mostly humming in my speakers) I had to plug the surge protecter (Monster) into another surge protector (Belkin pure A/V) and plug the Belkin into my wall. Do you smell what I'm stepping in ? A/C power in your home has a devistating effect on your sensitive electronic equipment. You may have to go to extreme measures to protect yourself from it. Maybe just try a different outlet or move high in the mountains off the grid and use generators for clean power.
I am confident you will be rid of these lines once and for all in the very near future. Look at the bright side. At least your not hearing voices.GOOD LUCK.
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Old 02-26-2006, 04:52 PM   #10
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1080PsF, Oh... sorry for not being that HD savvy yet no ...so with my component cables, even if I have "digital cable", I am sending an analog signal from my box to my set.

mykal82 and 1080PsF, I hope it's AC interference and not a problem with the set. There was an ever-so-slight hint of the effect this morning when I really closely scrutinize things... I have moved the component cables around (laying them on top of other wires and stuff) to see if I can make this effect very noticeable... no dice. But how about this... wife and I just moved into a rental which has some pretty heavy-duty-looking power lines hovering very close by....

I think (hope) that you guys are helping me find an explanation. Thanks much.
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Old 02-27-2006, 10:25 AM   #11
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I have had this problem before and it turned out to be interference from other devices within the home. I.E. Once it came from an electric heater and also the heating element of our coffee pot. I isolated everything from the power wires at least 3 or 4 inches and this solved it for me.
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Old 06-05-2010, 10:07 PM   #12
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Hey i have bought a brand new KLV-32NX500. But i have some concern. on the first day After watching TV when i stoped it i saw white mark (like fog) on the screen which is created from inside. and after a while it disappeared. can some one please give me a solution why it happened?…. is it a problem??… please please do reply…
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