My poor Xbox 360 hath gone to the RROD gods...
I told you that would happen.
We junk out two or three of those per day. (of course, we sell as many as we can possibly get our hands on.

)
(we offer an anti-lemon policy, free of charge. If a high ticket item comes back for repairs three times, we replace it and junk the returned ones, but they often end up on Ebay

)
My mantra:
Junk them all! Let God sort them out!