How to repair or replace a power transformer?

It will likely be more expensive to repair a damaged transformer like that than it will be to replace it, even if the new part is custom-built to do the job. It will be handy to get some voltages from the amp that works, and its likely that you have something else wrong with the amp- its unusual for power transformers to fail on their own.

You might want to talk to Jack Elliano at Electra-Print http://www.electra-print.com/

Thank you for your reply. I will hold onto the electra-print web site information.

Yes, your probably correct that there is another issue. We thought of that but it's good to hear others confirm. We are running a VARIAC in line to test each power supply and monitor the current so we don't damage anything else. The original issue was blowing out the 3amp fuse. Now on the VARIAC we can supply 10volts and the current is already at 1amp. We are going to record all voltages from the good amp this coming weekend and proceed. I am going to open another post asking if anyone has a used transformer and or a Caztech that is being parted out. This amp is at least 20 years old and the company is no longer around. Maybe someone has some used parts that I can purchase. Thanks.

Hmm. Did you disconnect the transformer from the rectifier?

If not your test may not be conclusive.

Par-metal in New Jersey sells inexpensive power transformers. Bridgeport Magnetics in Connecticut also sells transformers.