Turning an old PS3 into a George Foreman grill is silly. Those things get hot! You’re far better off turning it into something useful.
http://lastchance.cc/215919/the-ps3-grill-for-reals%3C/a%3E%3C/p%3E
https://gizmodo.com/the-ps3-can-be-used-as-a-bed-for-your-pet-5665531