Hi
Just logged on to be updated with all the posts here after a week or so.
Hopefully this has changed a lot since 1981 or so but SSL used Lambda power supply modules for their main console PSU's before they built their own 661 5u version inhouse. The Lambda modules were ALWAYS breaking down and had to be replaced. I remember having a steel 3u 19" grey box, machining it for the different power supply modules, wiring them in, only to replace some of them later.
Hopefully, the newer Lambda power supply modules are more reliable than those older ones from 40 years ago?
I didn't know that SSL still used Lambda PSU's for J or K consoles. The 19 way Bicc (Trident?) connectors are probably the same but with some different pinouts it seems (less pins I think but in the same place?).
Hope this helps or, at least is an interesting read. Regards from Jim Lassen in the UK (need to do more wiring posts with SSL patchbay wiring at some point soon...sorry for the delay!)