Same thing happened to mine. Basically, if you have your warranty, send it back to claim. If it's in Sg, it will take quite a bit of effort and time. Your dealer may be able to send it for you but if not, you may have to drive there yourself. Your hard disk should still be useable so if you can salvage that and all your files.

I'm on the way to pick up a 2nd hand PS3 in a moment actually!

One day, I'll drive up to Sg to get mine sorted. If you haven't fixed your problem, I'm happy to help you bring yours up too. I don't know when I'll be going up yet though!