laptop lcd has lines, not cracked

gateway 200arc
September 12, 2006 at 10:04:17
Specs: xp sp2, p4m/512

One day I turned the laptop on and the screen had a horizontal white line at the top and black fading horizontal lines. Little to know graphics of xp booting can be seen. This is repeatable every time. The screen is not cracked and if I plug in an external monitor, it works fine. I'm wondering what I should replace? The lcd, the inverter board, graphics card or maybe it's just a loose connection inside?

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September 12, 2006 at 18:52:45

If you're lucky, it's a loose connection to the screen, doubtful though. The first thing most people do is push on the sides of the bezel to see if it is a connection.
What it really is are dead pixels and requires a new lcd screen.
There is a program for fixing dead pixels that would be worth a shot.
Undead Pixel or Undead Pixel Home Page

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September 13, 2006 at 07:34:05

Since your external monitor works fine, then there is nothing wrong with your video and the majority of the laptop pieces.
Problems of not being able to get enough brightness or an always black screen on a laptop display are usually due to a defective or dead backlight (CCFL) or voltage invertor that supplies high voltage to it, but according to info I found on the Samsung site, lines of white or of one color across the screen or always black lines or patches of black or a lot more black pixels than you may have had before indicate the LCD assembly or the wiring to it is damaged. If fixing damaged wiring, if there is any, between the laptop base and the LCD assembly in the lid does not cure the problem, the whole LCD assembly in the lid needs to be replaced.
If the assembly needs to be replaced, sometimes you can find a refurbished assembly especially if your laptop model is a little older (e.g. for $150) or you may only be able to find a new assembly (e.g. for $250). You can replace it yourself if you're handy and have or can get a Maintenace manual for your model, but if you're not you'll also have to fork out the labour charges to have someone repair it for you.

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September 13, 2006 at 11:06:34

Thanks guys. It's definitely not dead pixels and more likely bad wiring. I found the inverter on ebay for $50 and a whole new LCD assembly for $149. I will take it apart this weekend, check the connections and if that doesnt work I guess I will buy the assembly as its not too expensive.

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Related Solutions

September 13, 2006 at 16:21:52

Replacing the inverter will NOT fix the problem with the lines or black areas - neither will replacing the backlight (CCFL). Check out the wiring first.

If you want to know what the symptoms or a bad inverter or baclight are, and what your options are,
see response 5 in this:

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September 13, 2006 at 17:25:52

what about replacing the entire LCD? I found one on ebay for $149.

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