I had 0020 and what i did was just re-apply the thermal paste. then put the screws in snug but not tight, then left to overheat for 2 mins without fans, then tightened the screws snug and left it to cool. then turned it on and it worked. only thing is you might have to fiddle with the screws alot. if the overheat method doesn't work the first time, don't keep doing it, it may wreck your 360! (IMG:
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