Biamp amp-a460 Pascal T-PSU repair

[Halide]

Hello all,
I have biamp amp-a460. Unfortunately the PSU is probably damage - I can't measure any voltage.
The fuse in power supply is fine but the small power converter do not generate 3V3. I try to push 3V3 from other supply but it do not change nothing.
Maybe someone repair that type of amp and have some schematics, power supply connector pin out description or something like that?
Best regards,
Bartosz