does anyone know how to fix a ps3

Their are reasons game console's may not work.

1. If you left it on too long while doing something else then you caused it to overheat.

2. If it's been tampered with then there's something wrong with the wiring from the inside.

3. If you or you're friends have smashed it or tried to then the entire thing is screwed up.

You might have to buy a new one if it's any of these problems, sorry.