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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β€” Posted by Tom Mitchell on 2005-11-30

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Industrial Electronic Repair
145 Rockwell Place Ct
Tobaccoville, NC 27050
Phone: 1-336-969-0110


Recent 312 Comments

#Rittenhouse by vandewater on 2025-05-14 19:14
just a heads up that the Rittenhouse RM20/RM22 intercom with radio unit went down mid-shift. Can you please check it out and follow up during the day? Thanks!

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#Rittenhouse by Tom Bell on 2019-04-10 01:02
I have a Rittenhouse 631/632 doorbell that works ok but the clock motor is noisy. Can I buy a replacement motor for it?

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#Rittenhouse by Yale Wolff on 2011-03-15 15:01
Have a Rittenhouse intercom system installed in 1956. There appears to be a dead short in the Master.Is there a NuTone Master AM/FM which will work with the satellite room units?

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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 isagani l. cua on 2015-03-13 18:40
Sir: Please help me diagnose the problem of my C8204 door chime, andthis morning I heard a noisy sound from the unit. And please give menearest service center here in Chino hills, CalifornialThanks

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#Rittenhouse by Cyndi Taylor Krier on 2010-11-17 22:19
Can I order a replacement transformer for this doorbell from you?

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#Rittenhouse by e. jureller on 2024-12-01 00:00
Urgent Follow-Up Rittenhouse RM Intercom DownDear Team,I am following up on the previous message regarding the non-functional Rittenhouse RM intercom unit. It is imperative that we address this issue

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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 Kathy Grant on 2018-09-24 16:43
I recently purchased an older home that has a Model # RC-475 - 16 volt door chime that works fine, but lacks the cover. Is it possible to purchase just a cover from you or is something like this no longer available. Amazon has one but the mfg. dimensions wouldn't fit. As close as I can measure …Purchase or Repair: Ticket Image...
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#Rittenhouse by Howard Hendricks on 2009-07-12 04:29
I have a Rittenhouse Chine door bell with four long poles. The model number is c8578-1, The unit will not work, I noticed two bad diodes, and removed them I am having problems locating the right ones. Is this something you can fix?

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#Rittenhouse by Theresa Perkins on 2008-12-16 16:21
I would like to install my RC633 which I removed from my old house. Can you send me instructions? Thank you.

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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 ElectraChime on 2017-01-22 03:43
I can make new bells for this chime. See my sites: doorbellmuseum.org and electrachime.comBestRobert

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#Rittenhouse by Sandra on 2015-02-13 19:13
Our old doorbell cover on our doors is broken, how and where can we find new or different( maybe clear plastic cover) for the doorbell Thank you

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#Rittenhouse by craig cipriani on 2011-11-03 15:22
I hav a door chime and clock rittenhouse model 631 and 632 i need a wiring diagram for. any help i can get is appriciated thank you

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#Rittenhouse by martin stacy on 2015-11-30 23:17
Hi, I just moved into house with Artolier Musician M7011 by Rittenhouse which doesn\'t work. I know you don\'t know why it doesn\'t work but any ballpark guesses at repair cost if I ship it to you? My zip is 516539 thx

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#Rittenhouse by Craig on 2018-12-27 00:39
I have a 620R, but your post was a long time ago. Did you get an answer?

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#Rittenhouse by Gregory Luchey on 2017-03-26 21:44
Door Bell repair motor needed

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#Rittenhouse by Martin on 2009-02-08 05:30
I have the exact same problem, but it\'s not caused by a lighted doorbell. Without the doorbell connect (and not crossing the wires) the chime mechanism keeps repeating. I\'m not sure whether it\'s because the contacts aren\'t lined up correctly or whether it\'s a wiring problem. I\'ve tinkered and …Purchase or Repair: Ticket Image...
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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 Bob Przybylski on 2018-11-28 01:06
I have a Rittenhouse door bell model c8355 and the transformer (that is what I think it is) has failed & does nothing but hum. Can I get a new transformer? or can I buy a replacement at the local home depot or Lowes?

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#Rittenhouse by Jim Drouillard on 2008-05-16 02:50
I have the above mentioned door chime (Rittenhouse door chime model C8536) that does not work correctly. There where some broken wires from the transformer coils that I soldered back on and now it does not work correctly. Do you have a schematic for this unit?

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#Rittenhouse by Mickey Loveria on 2007-08-30 14:53
Existing model was put in my home maybe late 60\'s, with ivory base unit and 4 ivory receivers plus brass door unit intercom. The radio reception is irregular, fades in and out and there is much static. Sometimes have to jiggle knobs on base unit to tune radio! Any suggestions on where to go for upg…Purchase or Repair: Ticket Image...
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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 Donald Brown on 2017-07-07 23:15
I need to have a bulb replacement performed on a 1980ties vintage bronze doorbell. The spring works fine but light nolonger stays on.Regards, Don

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#Rittenhouse by Tony Falco on 2012-04-17 19:38
Do you have available a manuel for the emerson ritterhouse RCM-4 intercom. I have to re- install mine

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#Rittenhouse by Jo Ann Redmond on 2011-10-18 23:20
Good Evening,We have a Rittenhouse Intercom System (solid state Am/FM Radio Intercome) it has got to be at least 30 years old. We are looking to replace the outside speaker box (Nu-tone). Please let us know if this item is still available. We would give you more info on the system, but cannot find s…Purchase or Repair: Ticket Image...
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#Rittenhouse by Emily Gladden on 2016-10-16 21:20
When you press our door bell button a chime is not coming out of the box in the outlet.

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#Rittenhouse by Candy Cicoria on 2011-07-14 01:45
I recently moved into a house that has the Rittenhouse All Transistor RCM-1 system in every room. It\'s obvious this system has not worked in a few years, but I want to repair it and keep it with the time of the home. A newer system would take away from it\'s appeal. Is there anyone in the Tulsa, OK…Purchase or Repair: Ticket Image...
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#Rittenhouse by Doug on 2011-10-01 20:21
I currently have this unit for sale on ebay. the wiring is simply two wires from the 16v transformer to the appropriate screw terminals on the printed circuit board and then the \"switch leg\" from each door bell button at the doors you are using attached to the corresponding terminal screw as label…Purchase or Repair: Ticket Image...
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#Rittenhouse by miriam spear on 2011-05-16 14:13
Only one of four chimes works, although we detect a faint electronic buzzing, in sequence, of the other three. For example, we hear Chime A, buzz, buzz, pause, buzz, buzz, Chime A. As cover has been lost, we suspect dust and grime is keeping the other hammers from working.Can the unit be cleaned and…Purchase or Repair: Ticket Image...
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#Rittenhouse by GUY DALFINO on 2013-01-24 17:30
I THINK I NEED A TRANSFORMER CLOCK WLL NOT RUN TX IN ADVANCE gUY

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#Rittenhouse by Dick on 2018-12-06 23:40
Part #C80Q0 door bell switch.Can I order a replacement ?

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#Rittenhouse by Terri McDougall on 2012-04-06 14:55
Our house was built in 1978 and we purchased it in 1997. It had the Rittenhouse monitor system in place with the main unit in the kitchen and smaller units scattered thought the house and in an attached apartment. The unit has never worked since we have been here and I was wondering if it is repaira…Purchase or Repair: Ticket Image...
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#Rittenhouse by GARY KASPRZYK on 2007-12-26 16:12
I HAVE A RITTENHOUSE INTERCOM AM/FM SYSTEM , MODEL # 9042 AND I AM TRYING TO FIND OUT WHAT SIZE[POWER REQUIREMENT] TRANSFORMER [ 4 WIRE] I NEED. I DO NOT HAVE THE OLD ONE. ANY HELP WOULD BE APPRECIATED. THANKS

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#Rittenhouse by carolyn berkey on 2011-08-04 23:15
our unit has power and the light comes on but nothing works. The electrician says it is not the transformer.

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#Rittenhouse by matt arendt on 2009-02-08 18:51
need troubleshooting info on rittenhouse model m7900 amp ser# 3060-0074-2091. also, price and availability of parts as i am working on an intercom system in a 8 unit condo.

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#Rittenhouse by Lori on 2008-12-29 00:49
Years ago lightening hit house the chime stoped working the unit is in the kitchen and of coarse the door bell at the front door to push with finger ..doesnt work anymore can this be fixed ??/

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#Rittenhouse by Marcy Berry on 2011-03-03 21:25
I am a property manager who manages a townhome with a broken Rittenhouse intercome system. The speakers on the exterior are installed in the brick so to remove them is a huge project. The main console in the kitchen is what I am looking to repair or replace. The model number is: (looks like) M7034. …Purchase or Repair: Ticket Image...
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#Rittenhouse by IRA G NICHOLS on 2025-07-08 20:58
I have a rittenhouse model c8204 that stopped working, had been working for years. New outside doorbell installed my be the cause.Can I test the bell by shorting the two screw terminals on the rittenhouse inside unit.

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#Rittenhouse by Dale Adams on 2006-05-28 16:30
My unit is in need of repair, can you help ?

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#Rittenhouse by Jamie Wingler on 2009-08-30 05:41
I have an inoperative Rittenhouse Model 7021 intercom system as well. Can I fix it or do I have to buy new?

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#Rittenhouse by Ray G. Brubaker on 2017-09-11 14:32
I have a model Rittenhouse # E780DC door bell push button. The center plastic button is broken. I need a replacement . I can use the whole assemblyPlease email me as to where I can buy it. Thank you.

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#Rittenhouse by Maryellen Boudria on 2009-07-19 19:15
I have a Rittenhouse chime Model #410 with it\'s companion two chime on second floor of our 1927 home. The door bell chime works however we are not getting all chimes to work. Only two tones downstairs. Can this be repaired? Please advise.Also, can you tell me how old this model of Rittenhouse is?Ma…Purchase or Repair: Ticket Image...
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#Rittenhouse by TONY HOVANEC on 2011-08-09 16:09
HAD LIGHTNING STRIKE AND WOULD LIKE TO REPLACE IF YOU HAVE A RETRO UNIT TO REPLACE IT THANK YOU

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#Rittenhouse by Brent Stoll on 2014-01-07 03:22
Label states Emerson Model S7671Rittenhouse DivisionArtolier lighting & soundEmerson Electric CoHoneoye Falls, New York 14472Second Label statesFire Alarm DeviceSingle and/or Multiple stationHome built in early 70\'s and have not found any information per this model and/ or type of device. If you ha…Purchase or Repair: Ticket Image...
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#Rittenhouse by paul suter on 2007-02-12 03:05
I have a old intercom in an apartment building that has door locks, buzzer, and voice. the call and voice speaker does not work. all the other apartments are working good. Is there a replacement for the apartment units. or a upgrade?

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#Rittenhouse by Frank Giudice on 2009-10-23 16:36
I have a clock and doorchimes door bell model RC-633.I would like to get relacement part for the door bell part the clock is still working.Can you help me

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#Rittenhouse by Dan Mazzola Sr on 2020-05-31 15:36
I’m in need of a sequence timer for the above mentioned Emerson Rittenhouse clock/chimePlease advise on getting 1 of them by email or by calling me at 617/590-3509New or reconditioned

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#Rittenhouse by Bob Hilsher on 2010-03-27 16:29
Unit stopped working. Have 16+ volts coming to it but no sound. Assume the syncronous motor is out... Telechron model M3151, Type H18, 3.6 rpm, 60 cy, 16 v. Is the replacement motor available? Price?Could it be anything else? All wiring is in tact on board.Thanks, Bob

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