It's spread all over the place so I will consolidate it all. Three notes:
1. There's a RIFA hiding in it. Usually across the output terminals. This is not the end of the world scenario but it needs removing on principle.
2. Also there is no reverse protection diode across the output or across the pass transistor so if you're using it to drive something which can shove current back into the supply (capacitors, batteries) it'll blow the shit out of the pass transistors if the line supply fails or is switched off by someone using the vacuum cleaner
![Laughing :-DD](https://www.eevblog.com/forum/Smileys/default/smiley_laughing.gif)
. Stuff a fat diode across the output and the pass transistors.
3. The push switches get a bit dicky. They are unobtainium so you will have to get creative with mounting a toggle switch or something alternative. Plus there is mains on the main board so be careful.
Action shot:
![](https://imgur.com/9wemgY4.jpg)
Inside. Whole thing breaks in half in the middle with an edge connector.
![](https://imgur.com/nhTNKaK.jpg)
Front panel with new RIFA replacement, new output cap and additional diode:
![](https://imgur.com/Ha2wgtr.jpg)
Pass transistor diode (on rear heatsink)
![](https://imgur.com/oQvRc3M.jpg)
I rather like 'em when they're working.
Yours might be a later one with some of the issues fixed. There were about 5-6 revisions.
Edit: oh watch out for the voltage reference diode and resistor. They run hot! Burned myself on the bugger.