Rittenhouse Service & Repair Forum
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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If you need your Rittenhouse unit tested or repaired,
give us a call at 1-336-969-0110.
We offer free estimates and extended warranties on the work performed.
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Industrial Electronic Repair
145 Rockwell Place Ct
Tobaccoville, NC 27050
Phone: 1-336-969-0110
Recent 314 Comments
I have a Ritten House Model 620R that needs to be repaired. The chimes are off of it and I have the motor ?? and clock box just needs to be put back together. I would love to have this repaired for my husband. We came across this clock out of a rental house we own and very sadley our renters damaged…Purchase or Repair: 
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Have Model DS-2 Door Sentry w/ 16v. chime transformer -Rittenhouse #30 or = need local chicagoland technician to trouble-shoot the control box w/ its transformer.-believe transformer is problem.
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—> Purchase or Repair:
Please provide an update on the status of the Rittenhouse C8578-1 135-7351-01 door chime unit. It is still not functioning, and we need attention on this matter soon. Thank you.
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—> Purchase or Repair:
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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—> Purchase or Repair:
Hi I need a cover for the rittenhouse door chime model 380 can u pls get back to me thank you
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—> Purchase or Repair:
Unit was installed late 1960\'s. Need speakers, knobs and covers to upgrade system.
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—> Purchase or Repair:
Would like to know if there is a replacement for this unit or where I can find a replacement knob for the Talk Listen stalk.
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—> Purchase or Repair:
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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—> Purchase or Repair:
i am looking for the cover of the door chime for the above model that needs replacing.
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—> Purchase or Repair:
My Rittenhouse door chime\'s top plunger does not work, the previous homeowner said when he was hooking it up, by accident the top soleniod was getting power all the time and over heated and it has not worked right since... can this be fixed ????
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—> Purchase or Repair:
I have a emerson rittenhouse rcm 4 main unit with IR6 speakers throughout a house i purchased and am interested in upgrading the entire system. Is there a replacement system where it can be changed out?It will be a few months before I am ready to do it, but am trying to look at options and replaceme…Purchase or Repair: 
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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: 
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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.
—> Purchase or Repair:
—> Purchase or Repair:
Our house came with this intercom system. Very Old I suspect. Is there anyone who could furnish me with a copy of the ownual\'s manual-instructions? Paul
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—> Purchase or Repair:
The installation manual has been misplaced and I am not sure which wires go to which connection. There is a red wire, a black wire, and a yellow with a green wire. The places to connect are for the front, rear, and transformer. Please advise. Also, there is a possibility that the transformer doesn\'…Purchase or Repair: 
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Hi, need repair to this unit, sound cuts in and out when volume control knob is turned/wiggled. Moving molex 5 pin connector on circuit board also causes power to cut in and out. Mode delector knob has become stiff to operate. Please send estimate if repair is possible, thanks
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—> Purchase or Repair:
we have an old set of chimes which were taken from our hallway after a fire, now they require repair, model number is not visible, however, it is a four long pole, with 4 or 8 note feature.would love to repair this
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—> Purchase or Repair:
I would like to replace my working existing RMC-4 rittenhouse intercom with a compatible unit. While using the existing wires? Suggestions _ and would you be interested in the old unit and speakers - 8 + 1 doorThanks,
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—> Purchase or Repair:
I\'ve recently come in the possesion of an emerson-rittenhouse model 633 door chime and clock. Somebody must have placed 120volts of power to the 16 volt circiut burning out all the electronics. I need all the electrical components including the hammars and motors. if anyone knows where i can get pa…Purchase or Repair: 
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Is there a new updated unit (with new bells & whistles) that can use the existing wiring and wall recesses of the old units. If so, where can I get them and what would be a ballpark pricing? Thanks
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—> Purchase or Repair:
This is a Mechanical doorbell with Electronic Control Board. I need Someone to give me an estimate for repair or tell me where I can get parts for this device. Thanks, Mark Wilson
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—> Purchase or Repair:
Hello, I have a rittenhouse door sentry. #M9035 w/ a M 9305 door station. The indoor station seems to work, it unlocks the door when the button is pushed. The M9305 out side station is my problem, the speaker is fried and the button is missing. Would you have these items? or where I might find them.…Purchase or Repair: 
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4 out of 10 times whenever I press the button it works.How do I know if the transformer that needs replacement or if the wiring itself that went wrong? I have replaced the button and it should not be the problem itself.How much would it cost if you send someone to fix it?Thanks.—> …Purchase or Repair: 
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Hey, the Rittenhouse C8578-1 135-7351-01 door chime went out mid-shift. Please check it out first thing in the morning. Thanks!
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—> Purchase or Repair:
Bell is connected to two doors. The front door works fine. The rear door won't ring at all. Can't tell what might be disconnected. Any ideas would be a big help. Thanks.Ken Bentham
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—> Purchase or Repair:
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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—> Purchase or Repair:
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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—> Purchase or Repair:
Have you ever heard of a response on the Rittenhouse 631/632. I too am refurbishing one and need to know the correct tranformer voltage needed and a wiring diagram surely would help. Any insight?
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—> Purchase or Repair:
I have a Sears Solid State Am-FM Master Station Radio/Intercom Model 113.35150 built by Emerson Electric. Can you repair this station. Please advise/
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—> Purchase or Repair:
I have a Ritten House Master Model 631 & 632 in my shop for repair. I would like to obtain a service manual for this item. Please advise if this is available. The clock is in bad shape as it fell of a wall and is in many pieces. Some of which I shall need to purchase.Please advise Peter TaylorTaylor…Purchase or Repair: 
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Do you sell parts? I am looking for a replacement potentiometer for an Emerson-Rittenhouse RC 633. It is labeled Clarostat 140-6747/ 135-51.
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—> Purchase or Repair:
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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—> Purchase or Repair:
need diagram for wiring of C8203. Only two reds, 2 whites, where would transformer lead be?
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—> Purchase or Repair:
My model 552 is not working. Licensed Electrician checked it out and it need replacement parts. I want to keep actual doorbell, because of sentimental reasons.
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—> Purchase or Repair:
I have renovated my house. I have a Model RC577 chime that is not working. I seem to have all the parts, 4 chimes, motor, etc.Please help me figure out how to repair.thank you
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—> Purchase or Repair:
The rheostat is broken on this unit otherwise the unit is as melodious as it was 40 years ago.The numbers on the rheostat are 1406417 and 135-51 The motor is a Telechron synchronous motor. 118V--16 Model 3151 RPM 3. W. 4.CantI purchase the replacement rheostat and have it shipped to PMB 399 at the a…Purchase or Repair: 
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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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—> Purchase or Repair:
I have a Rittenhouse master model 550 and 551 doorbell to be tested and repair if needed.
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—> Purchase or Repair:
the Rittenhouse C8578-1 135-7351-01 door chime is down. Need someone to check it out tomorrow. Thanks!
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—> Purchase or Repair:
Buying a condo with an inoperative Rittenhouse Model 7021 intercom system. Was constructed in late 70s. Is the technology so out of date that it is not worth restoring? Should I consider restoring the unit, about how much am I looking at? Is there a dealer here in AR, or do I have to ship it to you …Purchase or Repair: 
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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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—> Purchase or Repair:
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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—> Purchase or Repair:
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