Good News your Ps3 is not Bricked it is
GLOD
This Happened to my Fat Ps3 it usally happens at random times not suppose to happen to ps3 its because 3 reasons
1. The Ps3 was overheatings thats what makes that problem
2. Your Ps3 Needs to be Reballed
3. Try this get 4 Pennys put it on to of your Ps3 RSX ship and it will work fine

should turn on if it doses not turn on then your
ps3 got way to overheated :L
This happened to my old fat still waiting for my copper shims see if i can fix it