Replacing the bad flyback transformer in Apple's Studio Display 17"

Post by ddingus » Sun, Aug 06, 2023, 8:53 PM UTC

bombcar wrote: post #43

serf wrote: post #37

Everyone in the comments keeps saying "if you don't know what you're doing, go find someone that does, skip the work, dont touch it", etc etc. i'm here to say that that kind of behavior doesn't foster self improvement and learning. here's what I suggest : learn about the job, learn about the hazards, take the precautions, get the equipment, don't let your guard down, and then do the work by-the-book. you'll learn som…

The hazards have to be knowable (they all are) and you have to take the precautions. The trick is, that professionals often need to know how to do something just barely safely so that they can do it fast and efficiently. But a hobbyist doesn't need to do it fast, so you can do it very safely. In this example, learn how to ground out the equipment, do so, and then leave it for weeks, etc.

Post by Dylan16807 » Sun, Aug 06, 2023, 9:09 PM UTC

kens wrote: post #29

Dylan16807 wrote: post #22

Earlier quoted context omitted.

Not big enough in what way? A normal probe should be able to handle the distancing and the small current fine. Maybe it would lack insulation but I wouldn't use the word "big" for level of insulation.

Typical probes are rated for 600 volts (CAT III), so you'd have insulation rated for 600 volts between your fingers and 30,000 volts, which is kind of hazardous. Here's a recent Twitter video showing what happens when you combine a flyback transformer and faulty insulation: https://twitter.com/zh1nu/status/1673487720780529664