My xbox 360 died out of warranty with the 3-Flashing Red Lights. So, I took it apart and figured out how to fix it (retired systems analyst).
That was about 5 mos. ago and it's still running.
I tried to document what I found below.....
Open Box
http://www.llamma.co...Disassembly.htmNotes : Only need T10 on (6) black screws to get the top of the case off.
Do not remove (

black screws in center of box by X;s
For good measure
..
Clean all connectors.
Remove fan and clean.
Remove front circuit board and clean connector.
Clean & reseat DVD power and data connector.
Boot with DVD unplugged to check for green lights.
Tap ball bearing if not booting.
If that works replace DVD and test booting.
Check Top Cover for Melted Screw Post
.File to reshape (making outside of post as small or smaller than original size)
Place top cover on box (no screws) and test booting.
Use palm to push down on cover near center and over back right corner of DVD while testing booting.
Turn upside down and replace black screws (one at a time) testing boot with each.
Only tighten screws snuggly. Over tightening will cause case to flex and create boot/3-Red Light problem.
Notes
Box will boot with DVD unplugged
Ball bearing near corner by memory slots.
Tap ball bearing if not booting.
Leave the box running for 20-30 minutes with flashing lights to cool it down.
When the red lights are flashing the processor is turned off. The effectively cools the system down because the fans are still running
.
Problem
The xbox-360 is sensitive/delicate. Appears to have grounding issues.
The white cover must be connected with just the right torq on the screws or it will flex
causing boot issues.
Box may boot itself or shutdown while placing cover on with power connected.
BobT
Play & Win
http://www.netwinner...upCode=bobt1956Thanks for the tips. I will open my 360 today. But your link is broken. Is it the same article from Anandtech?