Xbox 360's that had a red ring of death problem could sometimes be solved by baking them or at least applying some heat via a heat gun (in the right place).
I got an extra 2 years out of mine before it died doing this
And it didn't actually work, because you can't get it to heat up to soldering temperatures that way (if you did get it that hot, the CPU cooler pressure would instantly crush all the BGA solder balls and render it a massive short circuit).
That only kind of worked temporarily because putting the system through thermal stress made things shift around due to thermal expansion, and possibly make contact again.