PSU II, Phono II problem

[nw3226]

I've been using a PSU II and Phono II for years and trying to fix a low 50Hz hum last night I managed to blow it up. The "magic smoke smell' seems to be coming from the PSU.

I'm keen to have a look to see if it is recoverable, but don't have a circuit diagram any more, or any info about what the test voltages should be. If anyone can share this info it would be much appreciated.

Thanks!

Nick