John, Do you have a copy of the schematics for the IMA 406 ? Mine has gone on the blink and I would like to get it back up and running. Thanks Tim

Mu IM406 radio is erratic and comes and goes. Can you help?

My nutone 406 starts working on radio but then gets erratic, gets noisy, a relay begins to chatter and then it quits altogether. Any ideas? Thank You Guy

Hello, responding to your post. I have an Nutone IM 3303 intercom. Recently the radio and doorbell stopped working. I have checked the transformers which are still functioning. The panel still lights. Any ideas? Thanks !

I rec\'d a reply from, Nutone, finally with a copy of the manual. Hopefully it\'ll work.