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 314 Comments
I have an old Rittenhouse door chime that is missing it's tubular bells. Home built in 1932. Chime cover has two decorative brass musical notes and a few horizontal brass what look like pinstripes. After researching, I believe it's 30's vintage and original to the home. I would love i…Purchase or Repair: 
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Ihave about a 30 year old rittenhouse with 4 chimes.It seems that the solenoids that activate the strikers,are getting a little lazy.I have had one apart and try to clean it ,with not much succes,I even lost one of those tiny springs. I tried to replace it with a similar one ,but it\'s not right.Do …Purchase or Repair: 
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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 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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It appears the hammers are sticking or a spring has broken. There are three. Can i get replacement solenoids/hammers, or an estimate to repair the whole Chime unit. Also if you think it would be best to buy new.Thank you.,John
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—> Purchase or Repair:
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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—> Purchase or Repair:
our unit has power and the light comes on but nothing works. The electrician says it is not the transformer.
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—> Purchase or Repair:
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: 
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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.
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—> Purchase or Repair:
This unit puts out a chirping sound (Similar to sound of a smoke alarm) on a continuous basis, one chirp about every 30 seconds. Please advise what I should do, short of disconnecting the unit, to stop this annoying sound.Thank you,Richard Baer
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—> Purchase or Repair:
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: 
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The reception is pretty poor and weak on the volume. Do your know if there is an transisterized replacement receiver that will fit into the 1970\'s model. Thanks, David......
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—> Purchase or Repair:
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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—> Purchase or Repair:
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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—> Purchase or Repair:
Could you please direct me as to where I may be able to obtain a circuit diagram for a rittenhouse installed in the 1980?Many thanksJoe
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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 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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Hello, I purchased my 4 note-8 note melody door chime in 1995. It has been set up on a battery operation operation
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—> Purchase or Repair:
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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—> Purchase or Repair:
I can make new bells for this chime. See my sites: doorbellmuseum.org and electrachime.comBestRobert
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—> Purchase or Repair:
Hey there, I've been tasked with looking into an issue with a Rittenhouse C8578-1 135-7351-01 door chime. I don't usually work on hardware like this, so I could really use some guidance on how to fix or replace it. Any help or advice you can provide would be greatly appreciated. Thanks in advance!—>…Purchase or Repair: 
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Eight chime unit {552} repeats sequence continually until switch is disconnected. Switch has been replaced but problem continues----any ideas and is it repairable.....
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—> Purchase or Repair:
I would like to know if spare components are still available? eg transistors and LM283T 5 pin audio amp or regulator? Or is there a replacement UNIT and what is the cost for a compatible unit.
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—> Purchase or Repair:
Art - did you get a reply in answer to your post?I am about to restore the same door chime, you may have info that can help.ThanksFred...
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—> Purchase or Repair:
some ONE TOOK MY 577 Apart, I need a picture of how the Chimes goback on the unitTHANKS
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—> Purchase or Repair:
I have just recently purchased a house that has a Rittenhouse Model 7300 Intercom system that does not work. I am trying to find a schematic for it. I know that it is an old system, but would like to use it to monitor my young children. Any help would be appreciated.Thank you.Eric Hoffman—> …Purchase or Repair: 
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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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—> Purchase or Repair:
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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—> Purchase or Repair:
i am looking to replace my intercom system and looking for a new system to replace it with.
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—> Purchase or Repair:
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:
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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—> Purchase or Repair:
have hooked up several ways appear to only chime once as if wired for back door.clock woriks fine, does ot chime on all tones
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—> Purchase or Repair:
This is an old system I would like to replace. Does the wire plugs have to be replaced. I would like sm=omthing that will be compatable with the wire plugs. Do you have any suggestionsThank You
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—> Purchase or Repair:
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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—> Purchase or Repair:
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:
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 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: 
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We purchased our present home in 1998. It was custom built in 1983 with many upgrades that were available at that time. Unfortunately since we have lived here the system does not work. The main unit is 17\' wide and 9\" tall. There are 12 units scattered throughout the house. They each measure 7.5\"…Purchase or Repair: ...
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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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—> 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 get typically one of three chimes to sound when the doorbell is rung, occassionally 2 followed by a buzzing sound. Some of the wires were loose and I tightened them, but still don\'t get all the tones. Any ideas on what to do to get all three chimes to ring?
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—> Purchase or Repair:
I am looking for a remote button for this system.Would possibly trade a receiver unit as I have extra.
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—> Purchase or Repair:
Hello, I have a customer that brought in a door bell unit, the one of theplungers is bent inside. I do not know alot about these things, we work on electric motors. He want to know if he can still get parts for these unit.The model # is c8231. Please inform, I may just send him your way. Thanks for …Purchase or Repair: 
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