Here is my entertaining Xbox 360 repair adventure..
I recently fixed a friends Xbox 360. It was a Xenon machine. Symptoms were not the 3rrod as usual.. It was 2 red lights.. Overheating
immediately when turned on. Upon investigating, it turns out that the heatsinks were barely touching both the CPU and GPU. After taking off the heatsinks, you could see how the thermal paste had been bubbling on top of the chips. Cooking it up..

Not knowing if it was broken for good, I did a high quality Xclamp fix on both CPU and GPU, using new AS5 paste. After that it booted up fine, and I stressed it for an hour playing GTA4 (is there a better way to stress an XB360?). All was well during that hour, so I figured it was fine and dandy, and I put the machine together..
How wrong was I..
Right after I put it together, I started up GTA4 again. Already at the menus, the fans started to speed up and go crazy. Then it bombed out with overheating. Hmm.. I let it cool for 10-15 minutes, and started it up again, and let it sit in the dashboard for a while. Fans sounded fine, no sign of overheating. I tried to play a bit of Portal (from The Orange Box). Played for 15-20 mins, and no problems at all. I then tried Crackdown, and here the fans were mostly okay, but they eventually speeded up. When they did, I paused the game, and the fans quieted down again. Hmm.. I then tried GTA4 again. Same as before - fans went nuts at the very beginning. I shut it down, and let it cool again. I booted up again, and now it started to overheat in the friggin' DASHBOARD..!! wth..?!
I then got the bright idea to check the error code. It was
0013. I then found this very thread, and saw it could be RAM overheat. I then spent a few hours going through this whole thread. I didn't see anybody had the 0013 error (but maybe I overlooked it?). I then figured maybe some soldering was screwed up in one of the RAM chips or something. I decided to try the heat gun on it. Took it apart, and took off the GPU heatsink (since two of the RAM's are under this thing..). I preheated the board, and then gave it 600° celcius on all the RAM chips, southbridge, scaler chip and GPU. I let it cool down for an hour, and then I did it one more time, and let it cool again. I gave the GPU some fresh AS5 and put the heatsink back on.
Then it ran beautifully! This was on the 30th September. Since then I have been playing GTA4 a few hours at a time, regularly, every day. I hope it stays well, but time will tell (wow, that rhymed..)..
Thanks a lot to this whole thread. Helped me a lot!
-Brian
This post has been edited by Thrash667: Oct 6 2008, 04:36 PM