Autopsy: Part 1
Disclaimer: Power supplies can have dangerous voltages inside them even after being unplugged, DO NOT OPEN POWER SUPPLIES. It’s just not a good idea. Opening a power supply and poking around inside could very well kill you. Don’t try this at home. Don’t try this at work. Just don’t do it.
As usual a fan hub shot kicks things off. Please note that I did not so much as breath on the fan label before taking this picture.
I was peeling all by itself. No clue who made it.
The unit itself in all its glory! I checked the PFC coil to see if it was real:
Yup, real PFC coil.
It has a pretty decent looking transient filter
Four Y caps, three X caps, three 92 joule MOVs (nice!), and a (blown to hell) fuse. That’s quite good really. You can see the two 200V 1000µF primary capacitors, too. Here’s the rectifier.
8 amps and 600 volts at 100°C with a heatsink, 3.5 amps without one. Going with a theoretical efficiency number of 70% that’d be just barely enough at 500 W load when faced with 220V. At 240V matters are slightly better. No data is given on open air thermal transfer.
