@pandora oh dang I'm gonna have to go find the webcam I removed the IR cut filter from so I can take a look at mine

@pandora can you get a close-up of the control board at the front? that looks like some serious power electronics porn. I think I count at least 24 power stages.

@gsuberland @pandora here's the one from mine which blew up (+some unsuccessful attempted repairs)

@russss @pandora surprisingly simple design! those IGBTs or FETs on the heatsink?

@gsuberland @pandora ah and here's the before-attempted-repairs picture (I think it fried a good portion of the driver...)

@russss @pandora toasty!

interesting topology. pass capacitor reminds me of isolated Ćuk.

@russss @pandora wait, I read it backwards. probably just a normal boost converter.

@gsuberland yeah this one is ~15 years old now, and died several years ago. I still haven't got a new one because it's flush-mounted in my granite worksurface and the surprisingly modular design meant that half of it still works.

They are FETs, if I remember correctly...