PSU diagram wanted for HP 8904A XL51-5601

[TheDefpom]

I am in the process of repairing a HP 8904A, which I am doing a video for on my channel here:

The smoke is from the infamous IEC line filter blowing up whilst I was testing the PSU voltages!

I MAY have identified the cause of the dead power supply, Q4 which is shorted out, however I would like to try and find a circuit diagram for it just in case (I am waiting for a replacement part to arrive).

All other testing I have done of components in the power supply seem to be OK (as seen in video).


The various numbers on the assembly are:
XL51-5601
08904-61001
7000005-01
510005

I have searched around and downloaded the various manuals for the unit, but the PSU is not part of the service manual, and its diagram doesn't seem to be findable online, so I am hoping that someone else has a copy, or have reverse engineered it, switchmode supplies are not exactly my strong point.