Here is a quick post on how to replace the video cable on a Dell Inspiron 6400. I had the ‘red tint of death’ on this laptop, thought it was the cable but unfortunately replacing the cable didn’t resolve the issue.
Firstly, the Dell Inspiron 6400 with red screen.
Again, I purchased the replacement part from eBay, where else can you get a replacement LCD video cable for $6 including postage to Australia. For the Dell Inspiron 6400 search for “UF167” which is the Dell part number.
Disassembling the laptop to get to the LCD is a fairly straight forward process.
First, with a flat screwdriver pry the top laptop bezel off, you will need to twist the LCD screen flat to remove it completely.
Here is a photo of the bezel removed, already we can observe one end of the cable connected to the video card, reseat (unplug and plug) the cable, this maybe all that is needed to resolve your issue.
Next we need to remove the bezel surrounding the LCD screen, peel off the rubber domes to reveal the screw heads. Once the screws a revealed, with a small Philips screwdriver remove the screws, this will allow you to remove the bezel.
Finally, four screws on each of the left and right side of the LCD screen needs to be removed to dislodge the hinges from the LCD assembly.
Once the LCD is removed you have access to the LCD video cable or can replace the whole LCD if needed.
Assembly is the other way around.