how to fix the power transformer of CAL Tempest II

The link below is for a former CAL authorized repair shop. They repaired my CAL Alpha a few months back. They phoned or emailed me every step of the way.
Great people!

www.approvedaudioservice.com/

This thread is old, but I got same transformer problem now.
Do you found any solution on yours?
THANK YOU

I know a guy on the Diy audio forums who owns a service manual. You can ask there if you have good skills.