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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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 312 Comments
The system is old and has not worked when I bought this house. Wish can fine some one to fixe and test it.
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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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Ubit was working fine, decided to hook up old style HI-FI unit per instructions and started blowing fuses. Looks like I created a short! Can you give me an idea of cost to repair and shipping charges? Thanks, John Medina
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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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I have a circa 1977 Artolier Lighting and Sound door Chimes / door bell / wall clock that HUMMS all the time. MODEL # C8633Can it be repaired?
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I am looking for a replacement unit or one that is compatable and larger to cover existing hole. please respond even if you are not interested or cant get what I need so I can try elsewere.
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Can the Rittenhouse C8203 doorbell be repaired or purchased as a replacement? I'm trying to check this off my to-do list. Thank you!
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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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—> 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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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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Hello, I am living in the house I grew up in and all of a sudden I noticed thatthe front doorbell was not working. The side doorbell hasn\'t worked for a long time. I have done some research so I will give you the information I have.Nutone Chime Signal, made in USA 1952, Model K 26 902 or 002It is a…Purchase or Repair: 
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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: 
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We\'ve got an old aprox. 30years old unit. signal fades in and out. Best to try and repair or do you sell new/updated maybe with cd or mp3 imputs? Also need a external outdoor speaker/intercom box. Has the 5 plug cupling. thanks,Paul
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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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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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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: 
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I have a Master Model 631 & 632, The clock stop working. its showing the red dot on the face of the clock that indicates power failure. The chimes still work fine with no issue. Can you provide instruction on how to test and/or repair. Thank youEddie
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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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I AM A ELECTRICAL CONTRACTOR AND HAVE BEEN TOLD THAT NUTONE WILL WORK USING EXISTING WIRING THE PROBLEM IS NUTONE WILL NOT WARRANTY IF YOU DO NOT USE NUTONE WIRE, BUT THEY DO HAVE A 30 DAY RETURN POLICY TRY THE SYSTEM IF IT DOES NOT WORK TAKE IT BACK ASAP
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need diagram for wiring of C8203. Only two reds, 2 whites, where would transformer lead be?
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Hi there, I'm interested in purchasing the Rittenhouse C8578-1 135-7351-01 door chime. Could you please provide me with information on pricing and availability? I'm looking to source one quickly. Thank you!
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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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The clock works fine. Three of the door chimes work, but the fourth and fifth strikers do not work. Do you repair and or have parts to recondition? Thanks, Tedd
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Jennifer Walker:Did you ever figure out what to do about replacing your Rittenhouse unit? I\'m in the same boat!Any ideas or products you have come across on your own would be appreciated
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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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I moved this door chime/clock when it was working from one home to another. The electrician that hooked it up did not do it correctly and I have no schematic for how it should be wired. I know it needs three wires but not sure on which of the 7 screws they get wired to. They do not indicate Com or T…Purchase or Repair: 
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I h ave a rittenhouse intercom system that does not work star system 9000 I would love to get it to work again. Can you help me with this thankyou glen
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Drive or board failure on Rittenhouse M7012 intercom/radio. Needs immediate attention to avoid disruption. Heading to next location now.
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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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—> Purchase or Repair:
Purchased a use Rittenhous Westminster door chime / clock; Tetechron Motored, model #8633. I need a wiring diagram for this unit.Thank you,Virginia Melchi
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I have a Artolier Lighting & Sound Div - Emerson Electric Co / Rittenhouse Operations Honeoye Falls, NY 14473 Model C8577 - 16 Volts. Do not know how to wire. It was working when it was taken from another home.This home is set up with one front door bell - ding dong doorbell on 1st floor and the Rit…Purchase or Repair: 
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Wee have an Emerson Rittenhouse doorbell model #RC552-1. The motor has fried itself. Can you repair? Thank you. H - (805) 685-2317
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—> Purchase or Repair:
The Rittenhouse C8578-1 135-7351-01 door chime unit caused downtime today from 930 AM to 1145 AM, impacting our operations. Need quick resolution before the next shift. Thank you.
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—> Purchase or Repair:
I have a ritenhouse emerson door chime unit. It just started chimeing for no reason I had to disconnect it to silence it. Now when I hooked it back up nothing happens. Clock doesn\'t work, chimes don\'t work.Model 086331 4 tubed chime It also has a teledcrome syncronis motor. Any hope for it.Thank Y…Purchase or Repair: 
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I have an old Rittenhouse intercome unit, since I don\'t use it that much, I would like to replace the face of it with something newer, don\'t know if it;s possiable? please let me know how i can do this.
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—> Purchase or Repair:
I own a late 60\'s Emerson Rittenhouse Model RC633 door bell Chime.The clock works fine but the door bell doesn\'t.I believe there is a problem with the motor.Can I have this unit repaired and approximately the cost?
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—> Purchase or Repair:
I would like to see if I can get this to work. But I don\'t know where to start.
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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: 
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I have a schematic for Models M7010, M7011, M7012, M7020. The document also has AM Alignment, FM Alignment, Troubleshooting chart, and list of replacement parts for printed circuit board.
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—> Purchase or Repair:
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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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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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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Hello! Do you have any parts for Rittenhouse (Emerson) All Transistor Radio-Intercom System, Model RM-1 (AM radio) or RM-2 (AM/FM radio)? Our system dates from the 1960\'s--still going strong. But I need knobs and especially the instruction manual because I don\'t know how to answer and use the exte…Purchase or Repair: 
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