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Thin whites lines at top of t.v. screen - Insignia IS 20" TV040919 TV

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If the lines are slightly diagonal at the top----bad filter cap in vertical circuit at the I.C. used for the vertical output--called feedback cap or the vertical output chip itself---if the cap and set used too long it will destroy the chip.

Posted on Oct 30, 2012

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Posted on Jan 02, 2017

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Lg tv model cf14j50k have many thin vertical white lines on screen and have sound what the problem?


These are retrace lines. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
Type in this key phrase " my service table today " in the search box at the top right of the display window of the home page, to get gathered some pages which has the details of practical experiences to the author of that site.

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IMO Seriously for $119 it's not worth it.
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If you are "Serious" about fixing I'd find a TV repair Forum.
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https://www.walmart.com/browse/electronics/32-inch-tvs/3944_1060825_2489948_7156390
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Apr 29, 2017 | LG 32LH30 32 in. LCD HDTV

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I have a LG 32LH30 TV. When I power on the TV I get a picture in the top half of the screen and vertical lines in the bottom half. Also I get a thin white dashed line across the middle of the screen....


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White thin line running across horizontal on my hp laptop


You got a bad LCD screen. no immediate resolution aside from getting the LCD replaced. if your system still has warranty call Dell for replacement.

Hope it helps!

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Thans!

Mar 10, 2009 | Televison & Video

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I have a 1985 Zenith Space Command Color TV. It has developed thin white lines at the top of the viewing screen. The rest of the screen is clear. Is it something small or am I looking at a new picture...


The picture tube is fine.
Those whites lines at the top of the screen are caused by a dry or leaky capacitor(s) nearby the vertical amplifier IC.
Let me know if you require further assistance.

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1 Answer

Thin horizonal line in middle on dark screen


The several thin white lines at the top of the screen is the warning that the vertical output IC is not getting the boost voltage it needs to run correctly. The IC cannot operate for long like that and shorts out inside, which is when the vertical collapses altogether and you get the thin white line through the center of the screen. The good news for your son is that he had nothing to do with that, and it has nothing to do with the cable F connector. The set needs to be serviced by an experienced tech who will restore the boost supply and replace the vertical output IC, and when I do that I charge $75 but techs in your area will vary, so be sure to ask around.

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