Rittenhouse Service & Repair Forum

I have a Rittenhouse Home Intercom, Model No. M7010 that had no audio. A technician said the amplifier was bad and he replaced several transistors in it, but the volume is very weak. He does not know exactly what transistors to use to replace the old ones, and does not have a schematic. Can you provide a schematic, or tell me where I might get one? Thanks, Tom Mitchell

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— Posted by Tom Mitchell on 2005-11-30

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Recent 315 Comments

#Rittenhouse by lausanne walter on 2008-08-03 14:55
I have about a 1984 model, 16.5 inches by 9 inch am/fm intercom unit........unit does not work anymore. Cannot pick up radio stations by dialing the knob......do you have a replacement unit that would fit this spot? Or is it repairable?Lausanne

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#Rittenhouse by Michael Donnelly on 2012-06-05 13:26
HiI have the above chime box and wish to re assemble it. I took it down for decorating purposes.There is a black/dark blue wire, a yellow wire and a red wire. There is trans, front and rear. My question is what wire goes with what?Many thanks Michael Donnelly

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#Rittenhouse by ellen wright on 2019-03-18 14:12
who repairs or work on the old Rittenhouse intercom systems.I would like to do an upgrade. Since I already have holes in the wall from the old Rittenhouse. I would like to upgrade to something along this same size.

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#Rittenhouse by mike boccio on 2015-08-28 16:39
hi I have a m7034 intercome system.The out door speak into box was flooded by our sandy storm.Needs to be replaced.The wiring is good and it would be easy to replace if I had original replacement kit. thank you mike

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#Rittenhouse by Bob Murley on 2014-10-31 04:57
Is the volume of the chime adjustable?

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#Rittenhouse by vero cho on 2007-06-19 19:49
sheetrocking my house after it was flooded by katrina, the contractor stupidly threw away the master station to my doorbell/radio/intercom system which rendered the system inoperable. i have asked an electrician friend to look at it and he cannot find a suitable retrofit. we will have to replace the…Purchase or Repair: Ticket Image...
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#Rittenhouse by Anthony Butts on 2011-10-02 19:14
The unit works, but possibly in need of some service. The AM radio works , but no FM. There is a bit of background noise in the system.

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#Rittenhouse by mccammond99@att.net on 2016-03-19 17:03
is there anyway i could get another one of these door bells?

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#Rittenhouse by karen varel on 2011-09-07 00:53
Do you sell parts for rittenhouse dooor chimes specifically Model #C8550 or do you know where I can get them?

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#Rittenhouse by Kenneth Jackson on 2009-06-25 01:00
I have had this for almost 50 years and the clock does not work, for some unknown reason, and the chimes are weak sounding and miss at times. I need help. Can this be repaired?

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#Rittenhouse by william j paveletz on 2018-03-09 19:10
i need a part model c8633 volts 16 need the main eletric gear

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#Rittenhouse by Richard Gilbert on 2014-03-13 02:02
Looking to replace the outside door bell speaker Mod. No.M9305

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#Rittenhouse by Christopher Cruz on 2011-03-09 13:15
Hellohave a 520 Beverly and it is working but I took it apart and found the rubber grommets and the felt strike pads are bad i am looking for replacements.ThanksChris

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#Rittenhouse by Withgott on 2012-04-13 00:00
Having issues with my Rittenhouse RCM-4 intercom with radio - the radio feature is not working. Need repair assistance

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#Rittenhouse by Mark Malan on 2017-05-17 14:32
My manual says 4-8 Note Chime Models (534, 535, 552, 577, 618, 633). I don't know which one I have. It has long chime tubes and a clock on top. The door bell works great, but the clock doesn't.

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#Rittenhouse by Paul Winchock on 2018-10-15 21:41
I have a Rittenhouse 550, 551 doorbell chime.The unit itself works fine. What I am missing (which someone was supposed to nor trash) is the transformer that sequences the chimes. Do you have a transformer for this that will work? And if so, obviously, what would one cost?Thank you for taking the tim…Purchase or Repair: Ticket Image...
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#Rittenhouse by Donna Dodson on 2007-03-02 16:22
I would like to see if I can get this to work. But I don\'t know where to start.

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#Rittenhouse by Hans Otto Mertens on 2008-01-01 23:36
The main unit needs repair!H.O.Mertens

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#Rittenhouse by Jim on 2010-05-01 22:41
I have the above model doorbell and really like the sound vs. the new \"electronic sound\" doorbells. Problem is the mechanism inside the doorbell (the part with the two knockers that the wires attach that hit the bells to make the sound) no longer works. Can I still get this part replaced and if so…Purchase or Repair: Ticket Image...
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#Rittenhouse by Corinne Censulla on 2012-02-29 17:56
I have a very old doorbell/ clock combination. The Model # is 450. The chimes work but not the clock. Since it is installed into the wall is there one the will replace using the same insert?

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#Rittenhouse by Colleen Wilkowski on 2011-04-28 15:24
I am searching for a User Manual for the Rittenhouse M9041 AM/FM Radio-Intercom system. The unit is original to the house built in 1982. I have found a tech manual with schematics but now need to locate a User Manual. Any suggestions would be appreciated. Thanks.

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#Rittenhouse by Eddie Ellis, Jr. on 2012-04-02 22:38
I have a Rittenhouse / Emerson intercom system with individual stations for each room. Two of the intercom speakers nolonger work. When I opened them they have one red, one yellow and one black wire leading from the unit. Is it possible to get them worked on or replaced. They measure 8 3/4\" long X …Purchase or Repair: Ticket Image...
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#Rittenhouse by Bernard Zeifang on 2014-02-18 15:19
Please provide information needed to ship my unit to you for repair estimateand possible repair.I am assuming you need only the radio(master unit).Thank you!

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#Rittenhouse by George Pond on 2019-07-27 20:32
Can you repair the solo kids on this 1950s era doorbell?It’s generally ok except that some of the parts that slide in the tubes to ring the chimes are lost. I could send it in or you could sell me the parts to fix it myself. Thanks,George Pond

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#Rittenhouse by Jolene Gross on 2015-08-16 14:22
I have a Rittenhouse model c8229 door bell in my home that is not working. I would like to have it repaired.Thank you,Jolene Gross717-781-3692

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#Rittenhouse by Frank Spramelli on 2015-02-10 19:04
needs repaired tuning dial is broken.

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#Rittenhouse by curtis gast on 2015-03-16 02:25
new home to me. system not working. any help would be great. thanks

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#Rittenhouse by Robert King on 2010-08-02 01:52
I know this chime assembly is very old but is there a replacement kit for the hammers. they are sticking and perhaps the springs are just too soft. I\'d appreciate any help you can give me.

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#Rittenhouse by James Short on 2013-02-24 20:40
A plunger on my 50 year old door chime is not returning to the rest position when the door chime is not activated. The consequence is a continuous buzz and erratic operation when the button is pressed.Have I provided sufficient information to diagnose the ease of repair?Thank you.Jim—> …Purchase or Repair: Ticket Image...
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#Rittenhouse by Mike on 2025-06-05 15:12
Trying to hook up ring with the rittenhouse 531 model. Not sure how the wiring should be set up? 4 white and red wires with 0-4 posts?

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#Rittenhouse by Franklin D Bamsey on 2011-08-22 12:52
Push the outside button and the bell does not work. It has been in the house since it was build in 1988. Any suggestions?

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#Rittenhouse by patrick stark on 2013-12-05 15:48
need wiring, replacement parts and pic of the model noted above. front door pushbutton lights, but no response from chime unit. the backdoor is working normal one chime. What may be wrong? the unit has a selector switch to scroll thru various chimes.

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#Rittenhouse by Barb C on 2009-03-27 12:35
Same as James Mann note - have 1970\'s Rittenhouse intercom---can we replace old system - can we purchase new units but use same wiring??

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#Rittenhouse by Galen Beaupre on 2019-06-10 14:27
I have a Rittenhouse Model 526.What would cost to test it?

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#Rittenhouse by Alex Gracia on 2009-11-13 05:30
I\'M A ROOFING CONTRACTOR IN HOUSTON. WHILE WORKING ON A PROJECT WE BROKE SOME INTERCOM SPEAKER BOXES AND I RPLACE THEM. I WOULD LIKE TO IF SELL THESE INTERCOM SPEAKERS.

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#Rittenhouse by k. chang on 2009-06-17 02:34
how do we get this old door chime to work again?we\'re already replacing the batteries, what else should we do?thanks

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#Rittenhouse by FLORENCE LUM on 2010-01-22 03:42
Is there someone in Honolulu, HI whom I can contact to test and repair my intercom, and replace my ON/Off switch @ the MASTER SPEAKER?We have enjoyed our unit for many years, since 1968.

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#Rittenhouse by Kathryn Fenich on 2007-12-18 20:21
Rittenhouse Solid State AM/FM radio intercom system for house and outdoors

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#Rittenhouse by Melvin Chrisman on 2007-02-24 22:05
I have a radio intercom unit that needs to be updated.

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#Rittenhouse by william hogan on 2006-09-05 18:05
I have a rittenhouse am radio intercome that works well. It has 7 receivers + the base unit. can it be changed to fm ? I believe it is a late 60s mdel. thanks

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#Rittenhouse by Kathie Hiers on 2009-03-11 03:19
I bought a house built in 1950 with an old Rittenhouse door chime, Model #365. I have no idea if it can be repaired. I don\'t have the front door button. The inner workings are very dirty. Do you think it\'s worth sending to you? Thanks, Kathie

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#Rittenhouse by Hal Hester on 2016-07-09 23:01
Similiar issue, my doorbell kept sticking. So I replaced the sticky button but now my springs inside the bell housing seem to be sprung and unable to move the plunger the full range to ring or retract.

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#Rittenhouse by Chuck Duncan on 2013-03-20 00:35
Was working well until I sanded and painted the kitchen. I took the chimes down to paint, put them back and nothing works. I get voltage coming in but it doesn\'t move anything.

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#Rittenhouse by Jay Sturm on 2007-02-24 18:35
Dear Sir: I\'m looking for a electric schamitic for an Emerson Rittenhouse intercom Model rm20/rm22. Any help in this matter would be appropriated. Thank You, JAY

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#Rittenhouse by Tom Mitchell on 2005-11-30 17:54
I have a Rittenhouse Home Intercom, Model No. M7010 that had no audio. A technician said the amplifier was bad and he replaced several transistors in it, but the volume is very weak. He does not know exactly what transistors to use to replace the old ones, and does not have a schematic. Can you prov…Purchase or Repair: Ticket Image...
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#Rittenhouse by Jeffrey on 2008-11-22 22:27
This problem may be caused by a lighted doorbell. After the bell is wrung, the light will re-illuminate. When that happens it may be drawing just enough power to make the door chimes think that the button was pressed once again. This is a repeating pattern.If a lighted door button is used, the solut…Purchase or Repair: Ticket Image...
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#Rittenhouse by Sharon on 2016-11-27 00:16
we have an old rittenhouse intercom system. the units look old but still works fairly well. need information on how to update system. we're remodeling in some areas and would like to check out updating units. don't have specs on the system. not sure of specs but Name on the system is Ritte…Purchase or Repair: Ticket Image...
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#Rittenhouse by stan j korzinski on 2011-10-14 21:39
model c8550 8 note melody needs motor

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#Rittenhouse by Starla Irvin on 2022-03-20 00:17
Moved in 3 years ago the AM/FM worked but nothing else. Wondering if I could get an estimate

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#Rittenhouse by DeLane Smith on 2008-09-16 13:35
I need a address to send this unit to get it repaired

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Industrial Electronic Repair
145 Rockwell Place Ct
Tobaccoville, NC 27050
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