.... this group exists to teach people the hard way of doing things - rather than the correct, effective or efficient way.

Anon.

a) Verify the flyback as correct. This can be done cold with simple resistance readings.
b) Verify the power-transformer. This can also be done cold with simple resistance readings.
c) Build a new power-supply - looks like about US$10 worth, including the heat-sink. Less transformers, of course, if needed.
d) Even both transformers should be able to be had for less than US$20.

If you start screwing around with the borrowed unit, you may have two dead devices on your hands. By your own admission, you are not a highly experienced expert in these things, so I am suggesting you err on the side of caution.

Peter Wieck
Melrose Park, PA