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Dell Latitude C840 and C800 LCD swap??

post #1 of 3
4/21/06 at 7:26pm
Thread Starter 
Hi,

I'm hoping to get some information about a possible LCD swap.

The problem:

My Latitude C840 has several vertical lines of blue (dead?) pixels depending on the angle of the screen. I can sometimes make them disappear and appear by angling the screen farther back and then back up again. The C840 has the following LCD according to my invoice: 15" UXGA 1600x1200 LCD, Dell p/n 3M904, IBM, V2.

The question:

I also have a Latitude C800 that also has a 15" UXGA screen. The invoice says: MALAYSIA DIRECT SHIP, C800, ULTRA EXTENDED GRAPHICS ARRAY, IBM, WORLD WIDE, dell p/n 9E985. My question is can I swap the LCD from the C800 into the C840? And if yes, can I just swap the entire panel assembly or do I have to actually remove the LCD from the C800, but keep the inverter and flex cable from the C840? I'm a bit confused on what is compatible with what...

Thanks in advance for any help you can provide!
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post #2 of 3
4/22/06 at 12:15am
You can try it and it shouldn't hurt anything if you do. Just remove the keyboard bezel, undo three screws (two near the hinges, one on the LCD flex cable) and pull it straight up from the base of the Laptop. I shouldn't need remind you to first disconnect the LCD flex cable . Just plug in the C800 cable to the 840's video card to see if it works.

Also, judging by the nature of your problem, I'd suggest eBaying for a new LCD Flex cable for your C840's panel. The LCD cable has seemed to be a weakness on this particular model. The cables go for under $10 on eBay so it's worth a shot to try and fix it.
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post #3 of 3
4/22/06 at 3:03am
I concur ont he flex cable as its a really delicate and cheap part thats usually the cause of the problem.
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