The (probably) failing PSU was a dirt cheap one via AliExpress a couple of years ago that has worked perfectly until quite recently. I think it was C$7 delivered, so really not bad value. It’s a shame that it seems to have failed, but that’s life. I think maybe I just ended up overstretching it it with a Pi 4, SSD, and fan.
The replacement unit is indeed a bit more expensive but
- it is a bit easier to get stuff from amazon right now
- it’s a bit more powerful.
Why use one of these instead of an “official RPF” one? Because I wanted to fit the entire stack in a nice box and have a normal mains lead instead of yet another wall wart. I used a dead PC power supply case (a rather nice flashy one) because it seems a nice option, had a nice mains socket/switch, mounting for an 80mm fan, cute slots in the ‘front’ for the air, and plenty of room to fit a Pi, SSD and so on. I have a USB 3 socket and Ethernet next to the mains lead socket, a pair of USB 2 sockets on the front, one HDMI out to the front although I virtually always use VNC, and the audio on the front.
I like how it looks as a finished device and it has functioned just fine until this issue. And with the new PSU al seems well and performance is as expected.