What can spark in the power supply?

Question

Iron

Recently I asked what is clapping and where. What can clap when you turn on the PC?
Today I can say with 99% certainty that this is a power supply. It turns out that when you turn it on, sheaves of sparks fly! However, this phenomenon has been observed for me for at least two years. I mean pops, sparks, I first saw today, when the system unit was pulled out.
Do I need to change the power supply, given that in two years I have not burned anything? Or maybe nothing else will burn? And what could spark there? Not every time though.

Answer 1

Today I can say with 99% certainty that this is a power supply. It turns out that when you turn it on, sheaves of sparks fly!

Are you kidding me?
Change urgently nafig ... Burn down and burn your neighbors ...
Because of such "maybe" - fires occur ...

Answer 2

Until the sparks reach the wallpaper, you can not change it.

Answer 3

99% - horseradish soldering somewhere in the high-voltage part. It is not difficult to fix, it is enough to solder the problem contact with lead-containing solder.

Answer 4

Cut to hell without waiting for peritonitis! (c) In the sense of changing him nafig until he burns everything around him.