My kid roasted his Xbox 360 during a 14 hour gaming marathon, so I Googled "RROD" and found the ifixit website.
I used the step-by-step instructions on their website and the repair kit (worth EVERY penny!) and got the 360 up and running in about 1 hour! It has been working perfectly ever since!!!
BUY THE REPAIR KIT! FOLLOW THE INSTRUCTIONS WORD-FOR-WORD! (I used my laptop to follow the instructions while I did the repair) The repair kit & procedure worked PERFECTLY! I could not be happier!! THANKS IFIXIT!!!!!