I've gutted several CRT's for parts, and "even" i haven't gathered two of the same kind of beefy transistors out of them.
... But i've got a whole box of ATX power supplies collected from various places
![Grin ;D](https://www.eevblog.com/forum/Smileys/default/grin.gif)
The two-NPN half-bridge is a reasonably "classic" design, and was pretty widespread up to 500W or so (until these higher-powered and higher-efficiency double-forward converters "took over").
I've had my own share of "fun" reviving an Antec SP500P that had allegedly "met" some lightning, a few years ago. If memory serves, it had a pair of 2SC3320. Still works fine to this day
![Smiley :)](https://www.eevblog.com/forum/Smileys/default/smiley.gif)
I've seen 2SC2656's in several other ATX's though.
Thank you all for the suggestions (and the interesting diversion..). I'm going to go through them and compare the data sheets. Will take a little while, but hopefully I'll be able to get something that'll do the job.
In answer to some speculation: I don't have any old CRTs lying around, nor do I have any other old SMPS to gut. This power supply is a cheapy China special and most people would throw it away, but I'd rather have a go at fixing it because I'll learn something (even if that something is "you needn't have bothered"). It is also a half-bridge design ![Smiley :)](https://www.eevblog.com/forum/Smileys/default/smiley.gif)