I suppose that you could fix this by yourself, it is very easy to get such components at electronic shops. Or you sell the chips and make BTC right away

I agree you can better fix this yourself, just replace it and see if it burns out, if it does something is drawing to much power.

"the power supply is antec 650W, there's no problem with PSU."

You need a higher wattage supply. When you run one that close to the limit, you highly increase the amount noise on the power rails. The component failure on this board is probably related to that.