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Latitude d420 screen cuts out

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#1 Darkknight2k3


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Posted 28 May 2010 - 01:48 AM

Okay i got a laptop from work its a latitude d420. The only problem with it is the screen intermittenly cuts out to way faded you can barely see it. I was told maybe a cable needs to be reseated but who knows. I look inside and everything looks alright except on the left of the monitor that black cable going up into the monitor from the motherboard is slightly scrapped and i can see copper. Wiggling it doesn't have any effect but i can get a great picture out of it if i change the screen resolution or when i first boot up. It seems like anytime i do a major change to the resolution or screen it'll work for 3 seconds then fades. Is this because the system will surge the power for a good connection then it drops? It almost sounds like a power issue and the exposed wire isn't the main culprit. Thanks for any help you may be able to provide!!

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#2 Sneakycyber


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Posted 28 May 2010 - 10:07 PM

The black wire running up the side is likely the 802.11 wireless antennae. It sounds like the back light on the screen is going out, could be a LCD driver board also. I am assuming the video out to another monitor works fine?
Chad Mockensturm 
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Certified CompTia Network +, A +

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