Not my Tutorial. Got it from 27

[size=2:730d800886]
[size=5][color="#FF0000"]MY 200TH POST WOOPItems Needed:

- Arctic Silver 5 thermal paste
- 24 5mm flat washers
- 8 M5 x .8 x 10mm machine screws

Tools:
- T10 and T8 Torx
- Pliers
- Phillips screwdriver
- 1/4 inch socket

Tutorials for openeing the case:
[ame="http://www.youtube.com/watch?v=LXwXC1IE_ck"]YouTube - How To Open An [url="http://www.se7ensins.com/forums/topic/41458-how-to-permanently-fix-the-3-red-lights-rrod-by-sca
r/#"]Xbox 360 [ Register or Signin to view external links. ] [/url][/ame]
Or
[url="http://www.llamma.com/xbox360/repair/Xbox-360-Disassembly.htm"]How to open/dissassemble a 360 case[/url]


Remove the dvd drive, air duct, Ring of light board, and all of the [url="http://www.se7ensins.com/forums/topic/41458-how-to-permanently-fix-the-3-red-lights-rrod-by-sca
r/#"]motherboard [ Register or Signin to view external links. ] [/url] screws on the bottom. Pull the motherboard out of the metal case and you should be left with this:

[size=2:730d800886]Resized to 94% (was 640 x 480) - Click image to enlarge [ Register or Signin to view external links. ]


Flip the motherboard over and you will see Microsofts cheap x clamps. These are the main cause of the 3 red lights. We need to pry these off, I use pliers but you can use a small flathead screwdriver. either way, be VERY careful not to damage the motherboard in the process.

[size=2:730d800886]Resized to 94% (was 640 x 480) - Click image to enlarge [ Register or Signin to view external links. ]

After removing both of them it should look like this:

[size=2:730d800886]Resized to 94% (was 640 x 480) - Click image to enlarge [ Register or Signin to view external links. ]

Flip the motherboard over again and pull off the heatsinks.

[size=2:730d800886]Resized to 94% (was 640 x 480) - Click image to enlarge [ Register or Signin to view external links. ]

Clean off the excess of the old thermal paste on both the CPU/GPU and heatsinks. I use a razor blade.

[size=2:730d800886]Resized to 94% (was 640 x 480) - Click image to enlarge [ Register or Signin to view external links. ]
[size=2:730d800886]Resized to 94% (was 640 x 480) - Click image to enlarge [ Register or Signin to view external links. ]


Use a 1/4" socket to remove the feet from both heatsinks.

[size=2:730d800886]Resized to 94% (was 640 x 480) - Click image to enlarge [ Register or Signin to view external links. ]
[ Register or Signin to view external links. ]

Take your screws and washers...
[size=2:730d800886]Resized to 94% (was 640 x 480) - Click image to enlarge [ Register or Signin to view external links. ]

...And put 1 washer on each screw.

[size=2:730d800886]Resized to 94% (was 640 x 480) - Click image to enlarge [ Register or Signin to view external links. ]


Take your thermal paste and put a SMALL amount of paste on each chip. Dont apply too much or it will ooze off of the chip when you clamp the heatsink down.

[size=2:730d800886]Resized to 94% (was 640 x 480) - Click image to enlarge [ Register or Signin to view external links. ]


Flip the motherboard over, take 4 screws and put them through the same holes the heatsink feet used to go through.

[size=2:730d800886]Resized to 94% (was 640 x 480) - Click image to enlarge [ Register or Signin to view external links. ]


Flip the motherboard over again with your hand under the screws holding them in place. Put 2 washers on each screw.

[size=2:730d800886]Resized to 94% (was 640 x 480) - Click image to enlarge [ Register or Signin to view external links. ]

Heres the tricky part, you have to hold the screws in place while threading them into the heatsinks. I flip the motherboard on its side then thread the screws into the heatsink.

[size=2:730d800886]Resized to 94% (was 640 x 480) - Click image to enlarge [ Register or Signin to view external links. ]
[size=2:730d800886]Resized to 94% (was 640 x 480) - Click image to enlarge [ Register or Signin to view external links. ]

Flip the motherboard over and screw them in as tight as you can.

[size=2:730d800886]Resized to 94% (was 640 x 480) - Click image to enlarge [ Register or Signin to view external links. ]


Repeat with the other side.

[size=2:730d800886]Resized to 94% (was 640 x 480) - Click image to enlarge [ Register or Signin to view external links. ]
[size=2:730d800886]Resized to 94% (was 640 x 480) - Click image to enlarge [ Register or Signin to view external links. ]


Put the motherboard back in the metal casing and plug in the ring of light, AV and power cables.

[size=2:730d800886]Resized to 94% (was 640 x 480) - Click image to enlarge [ Register or Signin to view external links. ]

Turn it on, you will most likely still have the 3 red lights.

[size=2:730d800886]Resized to 94% (was 640 x 480) - Click image to enlarge [ Register or Signin to view external links. ]


If you do, leave the fan unplugged and let it run until it overheats (2 red lights). Wait a few more minutes then turn it off.

[size=2:730d800886]Resized to 94% (was 640 x 480) - Click image to enlarge [ Register or Signin to view external links. ]

Let it cool for a minute then turn it on and see if it worked.

[size=2:730d800886]Resized to 94% (was 640 x 480) - Click image to enlarge [ Register or Signin to view external links. ]

If its green lights put everything back together and your good to go.[/size][/color]
[size=2:730d800886]
[size="3"][color="#1C2837"][size=2:730d800886]Credit to scar from s7[/color][/size]