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Greg Stewart

I don't have the diagram handy, (hopefully someone else will supply the correct terminal numbers for the line wires) - however from what I've seen the permanent magnet in these ringers sometimes looses its strength to the point where the mechanism fails to operate properly. Assuming its wired properly, and the contacts in the internal switch are clean, success can sometimes be had to make these things work by carefully adjusting the bias springs. Another method to add new life to these things was to add an external magnet to the unit strapped to the existing magnet... (use a nylon tye wrap perhaps) - I would think that the poles should match - ie N to N and S to S, but I've never tried it myself.

Remember - never ever disassemble the "magnetic circuit" of a phone ringer though, or it will never ring again - many people have found this out the hard way. That is, don't remove either the magnet, armature, or frame from the assembly, as the magnet will very quickly loose its strength.

Bob Kish

I have repaired a few of these and they are quite delicate. There is a set of contacts that cane be CAREFULLY adjusted. The first thing is to gently clean the contacts either with a contact cleaner or a very fine orange stick. (a.k.a., wooden nail file that can be purchased anywhere.)

When the chime is chiming these contacts rock back and forth making contact to swing the bell stem back and forth. Now if the contacts are ok the bell stem or mechanical part of the bell may have a problem.

If this is the case you can try to adjust the bell which can take some time but can be done to get the unit to chime. If the bell's mechanical parts are damaged in any way it is much easier to replace the bell as the contacts are not a permanent part of the bell assembly.

Usually these chime units are damaged either in storage or while being roughly handled so if all else fails most members might have one for sale but make sure the chime unit works before you get it. Hope this helps. Also try the mechanical adjustments first such as adjusting the bias spring on the bell or the distance of the bell gongs from center as adjusting the contacts can be a little tricky.

Steve Goddard

I have several of these and they can be the most frustrating to get the chime to work. There is a set of points or what looks like a simple switch hook that pulls the clapper to the high gong when ringing begins and drops it back to the low gong when ringing stops. They seem to be sensitive to ringing voltage as well. I got one working fine on the simulator but hen it refused to work on the Tel line. It's a combination of adjusting the points as well as the 3 position bias spring. I wouldn't be able to write instructions to cover it all.

I have spent hours on some of them, one must have the patience of a monk. Perhaps that is one reason they were discontinued.