Question about Compaq Presario CQ50-215NR Notebook

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I have a compaq presario cq50 215-nr. the lcd screen constantly flickers with colored lines going top to bottom. I can work if I press the screen down. I called HP they say that this comes under accidental damage and we will charge you $400 + tax bucks for lcd crack to repair this? Is their a work around because I never dropped it or anything?

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I am sorry to tell you that the screen has been damaged and will need to be replaced. There is no work around/solution for a bad screen. Replacement is the only way to go. Sorry.

Posted on Sep 07, 2009

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If you wish to get some details; visit the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ Line faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.

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I haveMy compaq presario CQ40 and my monitor screen got flicker always for past few days and more red horizantal lines @bottom of the screen, where i couldn't see the data,time,date... Plz help me...


This is usually a sign of either a bad LCD screen cable, a bad LCD screen, or a bad display adapter.
If you connect an external monitor & you get a picture without these red horizontal lines, then your display adapter is OK.
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My screen has a vertical line red-yellow-green from (top to bottom) that stays there. How to fix it?


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If you can find a monitor to connect to and know how to tell the PC to send a signal to it (ie, on a Dell it is Function F8) you can determine if it is your Video card or your screen that has failed. The Video card is part of the Motherboard and very challenging to replace. The LCD screen however is not as expensive and relitively easy to replace. You can watch YouTube videos on how to. A screen can be found at sites like Amazon and EBay.

http://www.amazon.com/Compaq-Presario-CQ70-120US-SUBSTITUTE-REPLACEMENT/dp/B005788D22

http://www.ebay.com/itm/NEW-COMPAQ-PRESARIO-CQ70-120US-LAPTOP-LCD-SCREEN-17-/200514204266

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Hi..i am using compaq presario cq 40 and screen is flickering.i had it checked and they told me lcd is the problem but they didnt even bother to check.they just turned it on and they told me that i have to...


When it flickers, can you still see the text when the screen goes dark?
May have to use a bright flashlight set right on the display to see
the text on the screen beside where the light sits.
That will tell you if it's the backlight.

You can also look at a grazing angle into one of the edges to see if the
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When it's cold, does it start with a slight pinkish color? That can be
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Anything interesting happen when you flex the cable by moving the screen?

I'm not saying it's impossible, but I've never seen software cause
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even less likely the problem.

If you bet the odds, you'd bet on a bad display cable.
Won't hurt to try replugging it.

If that doesn't help, then your monitor may be dying....

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Compaq presario cq40 lcd monitor is flickering/has colored lines appearing 1" thick at the bottom and at the top.


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Since the problem you describe is intermittent I would first suspect a loose or shorted electrical connection. To check this you will need to take the computer apart. Step by step photos of this procedure are at http://www.insidemylaptop.com/disassemble-compaq-presario-f700-notebook/ .
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The screen on my laptop flickers colors and there are lines running through through middle red blue green ect.. it does work on an external monitor tho could this be the lcd inverter


Lines on the screen means the LCD is bad and needs to be replaced. The inverter just makes sure the lcd turns on. That wouldn't cause lines on the screen.


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1 Answer

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Try reseating the LCD cable to the video card. If no change, then you will most likely need a replacement LCD (Roughly $150 on EBay)

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