iFixit

After heating the back of the motherboard for one minute, flip the motherboard over and lay it on the chassis as shown.

If you have installed the RROD fix kit already, keep the two small black heat sinks included in the kit stuck to their respective chips. The tape that is used to attach them to the chips on the board is extremely strong and attempting to remove them may damage the chips underneath. The heating process will not damage the heat sinks in any way.

With your heat gun set to HIGH, evenly heat the area boxed in red for four minutes.

When using the heat gun on high, it is extremely important to continually move the heat gun so the stream of hot air evenly heats up the desired area.

Avoid directly heating the many cylindrical electrolytic capacitors located near the area boxed in red.

After heating the area boxed in red for four minutes, turn off your heat gun and allow the motherboard to cool down to room temperature without moving or disturbing it in any way.

At this point, we strongly recommend installing our Red Ring of Death Fix Kit to safeguard against future failure.