MTH Z-4000 problems

Check this post for some info and photos of interior. Make sure your wires are connected to the the proper posts. They may be backwards. Also check the breaker button on the backside of the transformer.

First off the bell/whistle issue sounds like swapped leads.  Double check red output to center rail and black output to outside rail(s).

As far as the dead side, check that one of the breakers has tripped.

Ron

Yes, the Z4K does look like a simple transformer. Well, it's far from it. The Z4K has many functions built in. It is more computer than transformer internally. Your best bet would be to find a qualified MTH Service Tech. If that's not possible let the folks at MTH's Service Department take over. That may be your best option. It's cheaper than buying another.

I own one of the earlier Z4K. More than likely the same as yours. I've had a few problems since new. You will not regret searching out a good service tech.

Apparently, according to the folks at MTH, very little has changed in the Z4000 over it's lifetime.