If you can prize out the black plastic plate that the capsule is mounted to, the whole thing will come out. If I recall correctly, it's glued in place, but it's just a spot of glue and the seal is easily broken.
There's not much else in there - the capsule, its mounting plate, and a small circuit board with a resistor and a couple of capacitors. There's no transformer.
I'm guessing you need to re-wire it? The wires tend to fail where they go through the pivot.