[RodB]

Continuation: So when you get this far and still no clicks then double check your connections. All you want to do is send pulses into the transformer primary and get clicks from the speaker. I noticed that the transformer is a push pull which means the primary has a center tap. You can send pulses across any pair of primary wires. When you test the primary with your multimeter be sure to test both halves. They should measure close to the same resistance.

If you don't get clicks then one or more of the coils is bad, including the transformer secondary or the speaker voice coil. Let us know how it goes.