NuTone IM3003 Master Station - Common Failure Mode #1 - Low Volume

One of the most common and easiest to recognize problems with a NuTone IM3003 Intercom Master Station is extremely low volume on both the Radio and Intercom.

This can be caused by either a failure in the Power Supply Circuit or a failure in the Amplifier Circuit or both.  An amplifier failure is more likely to follow a failed power supply that has been left unrepaired for a long period of time.

Here's aN early (1986) IM3003 that was sent in for repair with extremely low volume.  This Master Station is completely original without any signs of previous repairs.

Here's a short Video showing its working condition as I received it and the after I had rebuilt it.

This was a very straight forward rebuild without any surprises.

After all of the circuit boards were cleaned and rebuilt, the pushbutton switches and the sliding volume controls were cleaned and lubed for easy operation.  The face plate was washed and all of the wall paint was removed.  Final assembly and testing with 3 remote stations and a door speaker showed that this IM3003 is ready for another decade of use.

If your IM3003 is experience this or other problems use this link to contact us.

Use this link to our Intercom Repair Request Form

How To Remove Your NuTone IM3003 Master Station - Video -

The NuTone IM3003 Radio Intercom Master Station is the most common model we have sent to us for repair.

I have learned that owners find it somewhat daunting to open up their Master Stations and disconnect all of the cables and wires so it can be removed and sent to us.  They find it equally difficult to reinstall after they have received the rebuilt IM3003 Master back.

After I have spoken with each customer about their repair, I send them a copy of the original Installation Instructions which gives the step-by-step instructions and diagrams to install their IM3003.  This works for many owners, but I think a video showing how to remove their IM3003 may be better.

Here is a short video showing the removal of a typically installed NuTone IM3003 Master Station.

After this IM3003 was removed from the Installation Mock-up I moved it over to the repair bench (yes, it really belongs to a customer!).

Here are some pictures of the faceplate after all of the paint was removed and it has been cleaned.

Here's a picture after all of the circuit boards have been cleaned and rebuilt, the face place has been washed and it's all ready to be reassembled.

Final testing took place after it was put back together, everything worked great.

Contact by email us about having your NuTone IM3003 Master Station Repaired

Submit an Intercom Repair Request Form

NuTone IM3003 Master Station - Common Failure Mode #2 - Loud Hum on Master Station

This IM3003 was sent in for repair due to its very loud hum and almost total lack of any function working.

After a complete rebuilt and a thorough cleaning, it's ready for another decade of use.