I think I found the problem in my broken power supply

One blown circuit :)

Guessing from this picture, it is a TNY278 "Off-Line switcher"

And here is the other side :)

I was looking close to where the smoke on the inside of the chassis was, and there was the blown circuit. I wonder if this is the only broken component. All the capacitors looks fine. I wonder if maybe 600W was too weak for my computer. Also, it is summer now and a little bit more warm in the air.