Testing the Lab Volt 8341-00 Transformer

Note: This transformer is rated for 120 VAC maximum voltage input.
To prevent over-voltage failure; hook jack 1, to the power supply white neutral and jack 2, to the power supply red, black or blue.

Resistance values of a known good transformer.

Jacks Expected Value
1-2 8.6 Ohms
3-4 25 Ohms
3-7 12 Ohms
7-8 9.3 Ohms
8-4 3.5 Ohms
5-6 7.7 Ohms
5-9 3.7 Ohms
9-6 4.1 Ohms

Voltage values of a known good transformer with 100 VAC input to jacks 1 and 2. 

Jacks Expected Value
1-2 100 VAC
3-4 173 VAC
3-7 87 VAC
7-8 63 VAC
8-4 23 VAC
5-6 100 VAC
5-9 50 VAC
9-6 50 VAC