So I recently started building a pc by buying new or second hand parts. The motherboard is second hand but in brilliant condition. I had all the parts and plugged everything in and it seemed to start up. 5 seconds later it completely shuts down and proceeds to restart. After some careful online research, I concluded that the psu was not providing power to the 8 pin conection on the motherboard and so I spent another week buying a cheap psu from my local Saturn. I get home and plug everything back in. The thing powers up but again goes into the 5sec boot loop. Frustrated, I flick a switch on the back of the psu which had 230/115 on it. A sudden pop, sparks and a broken fuse for all my room sockets. There was NO smoke. On closer inspection I find the motherboard is looking ok with nothing out of the ordinary e.g. melted solder, burn marks or popped fuses. I concluded that the 8 pin was faulty ON the motherboard and went about my day praying that the cpu and gpu are ok. Im thinking about getting a new motherboard but on close inspection of the current motherboard I found that it has a z87 chipset (best for the cpu line) and on amazon it is waaaay out of my price range. So now I'm thinking if it's possible to somehow repair the 8 pin conector? This would be so much better than getting the bottom of the barrel €50 motherboard and I want to keep this a's cheap as possible