Cambridge Audio amplifier Model A1 Mk1

[Turnip]

Hi folks,

Had one of these in this morning with a blown mains fuse - Turned out to be the toroidal mains transformer short circuit primary - I isolated the secondaries to make sure.

Note this trannie has two secondaries - voltages unknown, can't find any info.

Note that YouTube has a video showing how 'CA' toroidal mains transformers give crisper Hi-Fi sound - The only observation seemed to indicate doubts.

Any thoughts ? - Thanks - Chris.