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 Home | First message in thread | Previous messageHi Guy, I have been using a Nutone 406 for about 30 years, and several times, it had had the same problem. To fix it, try re-seating the control circuit board. This is the board mounted towards the left side of the radio assembly, and it has a relay on it that has a clear plastic cover. If that doesn't work, you may need to replace or rebuild the control board. regards, John 
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 I pulled the 406 unit out of the wall but do not see a clear plastic cover and anything loose to reseat. Can you help me figure out where it is, maybe a picture or something. Thanks Steve | 
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