Been doing tons of work this week trying to fix this 360. Initially it was an error with the overheating, fixed that 23 times.
Now, I am getting overheating IMMEDIATELY on start up. I haven't taken my gauge to the chips yet, but all are cool enough to touch (even the CPU without a heatsink).
The unit powers briefly, but never makes it to the point to initialize video. The fans will power on full for a brief second then shut off. The power supply starts off green but goes amber, yet the red lights continue to stay on on the unit. Cannot obtain any error code either.
Because the power brick goes amber, no power appears to be going to the CPU or the GPU, as they remain at room temperature with no fans. The RAM is cool on the underbody as well.
Any ideas? Let me know if you need any more info. Thanks in advance for the help!