Error code 0102

do the eraser trick http://uk.youtube.com/watch?v=3lldDG4SnAc then let it flash the rrod for 15-20 mins let it cool for a further 20 mins. the only thing different i did was to take the x clamp off the gpu, scrape the thermal putty off not all of it, just enough to cover the chips with then spread it evenly on the top of them with my finger put the x clamp back on put it back together with the erasers in and hey presto works like a dream. i had error code 0102

mine had this error code 0102. after a little research i tried using a blow dryer on it it fixed it in like 2 or 3 minutes i'm guessing it has something to do with moisture

If you're comfortable enough opening your 360, you can try this tutorial, which has worked for many people.