My PS3 Super Slim is bricked. When I turn it on, it's fan works for 3 seconds then it's completely turned down, and there is no light.
I tried to change the power cable put its still not working. Can any one help me with this?
Though this is late, I am going to answer anyway.
Take it to a computer repair store
We can't know what is wrong really, since computers and consoles are such complex machines we can't single the cause down without looking and inspecting the machine in person. As I recommended in my comment, take it to a computer repair store or GameStop and see if they can fix it or replace it.