I had the iMac 2011 grey screen, to blank screen, to crazy demonic rainbow screen.
Ordered the Pro-Tech Toolkit a Magnetic Project Mat and the suction cups. Figured it would be cheaper to try to open and check for damaged cables or power assembly. I’ve never done anything THIS involved. Reluctantly and carefully opened the Mac (warranty already expired anyway and thought it for a gonner) and found nothing. Put it back together and it was was still not working. Browsing through YouTube I watch a detailed video about BAKING the graphics card. I’m like “ screw it let’s have fun “ and tore that entire motherboard up, got to the chip, baked it (accordingly, don’t try this without adult supervision), and put it all back together. My computer is alive and well!!!
Really. I wouldn’t have been able to fathom this repair of it wasn’t for all of ifixit videos of encouragement and your tools. I mean, when the repair failed, I at least knew the tools you provided worked and I was completely satisfied and surprised with their great quality. My advice is get the right tools and make up your mind that there’s no going back when you start tearing things down. That magnetic MAT??? LIFESAVER. Oh and I EASILY popped open my PS3 to pull out a disk my daughter jammed in there. I’m all “Mr. Fixit” in my house now ha!!!