This link contains much of relevance to the thread.
http://www.repairfaq.org/sam/flytest.htm
You can construct a simple tester for shorted turns from a Colpits oscillator. Adjust the oscillator for stable operation and then connect the unknown transformer coil across it. A shorted turn stops or significantly reduces oscillation.
http://www.repairfaq.org/sam/flytest.htm
You can construct a simple tester for shorted turns from a Colpits oscillator. Adjust the oscillator for stable operation and then connect the unknown transformer coil across it. A shorted turn stops or significantly reduces oscillation.