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#24446 - 04/12/03 02:31 PM interference in electrical lines in house  
stardotstar  Offline
Junior Member
Joined: Apr 2003
Posts: 4
I have a very inexp intercom Made by Novi. It utilizes you 100 throughout the house to communicate. After many months of working, it began picking up interference from something.

Units work fine outside of home. Any suggestions on how to troubleshoot were interference is coming from?

Thanks, and sorry if this is the wrong place for this post, I am new.

ED


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#24447 - 04/12/03 03:26 PM Re: interference in electrical lines in house  
Elzappr  Offline
Member
Joined: Dec 2001
Posts: 270
Oregon
Would you please describe the interference? Is it continuous, or is it just occasional? Is it a hum, or is it a static/scratchy sort of sound? Does it happen during certain times of the day?


#24448 - 04/12/03 04:16 PM Re: interference in electrical lines in house  
stardotstar  Offline
Junior Member
Joined: Apr 2003
Posts: 4
Intermittent static and sometimes a buzz. Any time of the day or night, that's why we had to turn them off. Just happens randomly.

Thanks


#24449 - 04/12/03 04:36 PM Re: interference in electrical lines in house  
Bill Addiss  Offline
Member
Joined: Oct 2000
Posts: 3,878
NY, USA
Quote
It utilizes you 100 throughout the house to communicate
Can you clarify that a bit?

You say randomly, so it doesn't happen all of the time?


#24450 - 04/12/03 08:51 PM Re: interference in electrical lines in house  
stardotstar  Offline
Junior Member
Joined: Apr 2003
Posts: 4
I just noticed a typo: should read it uses 110 throughout the house.

No it does not happen all of the time.


#24451 - 04/12/03 11:48 PM Re: interference in electrical lines in house  
Zapped  Offline
Member
Joined: Oct 2002
Posts: 482
Huntington Beach, CA, USA
Question: Have you installed any fluorescent lighting in the house recently? Have you changed any lightbulbs in the house from incandescent to energy saving fluorescent replacement?


#24452 - 04/12/03 11:58 PM Re: interference in electrical lines in house  
George Corron  Offline
Member
Joined: May 2001
Posts: 717
Lorton, Va USA
stardotstar,
the last time I fooled with those things, they worked on ANY outlet on the particular transformer feeding them, including your neighbors. In a populous area, this can be a problem. The interference may not be yours, but a neighbor using a skilsaw, or any other appliance. I have an electric coffee grinder that wreaks havoc with tv's, radios, etc. this could be your problem. Good luck, in most situations these things work pretty daggoned well.


#24453 - 04/14/03 03:35 PM Re: interference in electrical lines in house  
kale  Offline
Member
Joined: Nov 2002
Posts: 174
I too, as a shortwave radio listener, have had to track down various sources of RFI (Radio Frequency Interference)coming over the power lines. Here is my hit list:
1. Incandescent dimmers.
2. Electric motors.
3. Fluorescent lighting.
4. Touch lamps.
5. (loudest and hardest to correct) Noise coming in over the POCO lines from dirty insulators or bad pole transformers.
6. Electronic equipment with LED displays, such as VCR's, clock radios etc.
7. HID lighting.


[This message has been edited by kale (edited 04-14-2003).]


#24454 - 04/14/03 05:20 PM Re: interference in electrical lines in house  
Trainwire  Offline
Member
Joined: Mar 2002
Posts: 360
Strasburg,PA,USA
This is going to sound really stoopid. But try twiddling the volume knob.

My computer's speakers had the same problem, 60 cycle hums, crackles and pops, it would go away if you ran the volume control up and down.

Fixing it involves replacing the volume pot, or getting in there with some sort of tuner wash or other electronic cleaner.

TW


#24455 - 04/14/03 09:39 PM Re: interference in electrical lines in house  
Sandro  Offline
Member
Joined: Dec 2001
Posts: 444
Stoney Creek, ON, Canada
Any type of battery charger(s) in the house? I have seen more than one occasion where a charging battery has interfered with electronic components.

Just a thought.


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