Thank you very much for quick reply. In my two desktops I have Enermax and Corsair PSUs; this one (from photos) is from and old PC (Socket A) which I want to bring to life again. I started to check every single component for any problems, because this PC is really old and I come to this "picture" when opened the PSU. Now when I am 100% sure that this PSU is faulty (thanks to all posts :-) ) I will buy a second hand PSU like Fortron 350W PNF series. Thank you again for really quick reply and have a good day.