"Is there a way to fix a faulty Mac Pro (early 2008)PSU?"に関する回答I disagree with the notion that board repair is not a DIY job. Almost everything can be a DIY job if you're willing to invest the time and money in buying the equipment and learning the trade. I am now competent in microsoldering after watching hours of youtube videos and purchasing some entry-level equipment. Yes, you will have to fumble through it to get good, but I hate it when people discourage others from trying, and dismissing it as professional only. At this time, I have this exact PSU torn apart on my bench, energized with an isolation transformer, and I'm tracing down a missing 5V signal on pin 3 of connector C. This can be done if you educate yourself and are safe. I came here looking for clues and all I got was a bunch of people saying that "you can't". I don't believe in that. Just be safe and learn about the danger, and take your time.