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I can see couple of vertical lines on screen - HP Computers & Internet

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  • dougc5472 Jul 06, 2010

    this more then likely means the screen or the lcd inverter is going out. If you grab the upper corners and lets say pull the left side and push the right side a little bit to kind of twist the lcd screen do they go away or get worse.

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Your computer has Cracked it Screen replace with new one

Posted on Jul 06, 2010

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I have a Bravia KDL 40BX421 that suddenly has green vertical lines on the bottom 1/4 of the screen. These lines are in a background bar that is mostly a reddish shade.


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Screen went black with a couple vertical colored lines


Check the tcons connections ( both flex cables and also the LVDS cable) if that doesnt solve it would suspect the Tcon as being defective. For further assistance please respond to this same post.

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Vertical multicolored lines appear. Sometimes there are couple of vertical white stips and vertical lines


Connect an external monitor to your laptop. If the problem appears only on the display of the laptop and not on the external monitor in the same time that means the video card is ok and the problem could be : the screen of the laptop or the invertor or the cable that attaches the screen to the mainboard. Have it checked by a professional.

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try removing the bios battery for couple of mins and then replacing it :)

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1 Answer

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Hello bdedrick708,

If what you are trying to say is that you have a 1/4 inch horizontal line across your screen, this means that something in your vertical deflection circuit has failed. This could be the vertical oscillator, the vertical output processor, the vertical coupling capacitor, or the vertical section of the yoke transformer.

If what you are talking about is a vertical line from top to bottom then you are possibly talking about a failed horizontal section of the yoke transformer.

Why so little about the horizontal section of the yoke? That is because if the horizontal section fails completely then you would lose high voltage and no line would be present because you would not have raster (screen light).

In any even check the yoke transformer first. Then work back from there.

I hope this helps,

Thank you,

Shuttle83

llc.com/">http://www.electron-age-technologies-llc.com

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Screen Smaller on Orion1934" TV


Hello Falken94,

Your TV is losing what is called vertical deflection. This might be caused by the vertical coupling capacitor going bad, or by the vertical deflection coil on the yoke transformer going bad. In any case there is not enough vertical deflection signal getting for the vertical output section of your TV to the vertical coils on the yoke transformer. I would suggest that you get this looked at by a qualified TV technician, due to the nature of this problem.

I hope this helps,
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Shuttle83

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1 Answer

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Hello e26pitts,

If the line is horizontal then it could be a problem in your vertical deflection section, if the line is vertical then the problem is in your horizontal deflection section. Now for a little more detail.

If Horizontal line is present the vertical section of the yoke transformer is nit responding to current flowing through it due to being open, or the vertical coupling capacitor is open, or even the vertical drive transistor might be defective.

If Vertical line is present the horizontal section of the yoke transformer might be bad. Now this gets kind is easy in a way, because the yoke would be the sole cause of your problem here (maybe there is some circuitry doing some horizontal coupling check that to) because the horizontal section controls other functions that would also respond if this were a horizontal drive issue. In any event these problems should be checked by a qualified TV technician, I would suggest that you take the TV to a repair shop to have it worked on.

I hope this helps
Thank you,
Shuttle83

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1 Answer

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you have done said it vertical lines then you will have to take your tv to a tech for repairs.good luck.

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