Consumer Electronics

I have a Panasonic KX-T7030 telephone system in my home that…

Customer Question
I have a Panasonic KX-T7030...
I have a Panasonic KX-T7030 telephone system in my home that is linked to my doorbell(intercom)--At random hours the doorbell will just ring and continue to ring when nobody pushes the button. I can hear a clicking sound coming from the main box. Can you explain what is wrong and how to fix it? I looked to see if there was an internal battery but... Read full answer
I have a Panasonic KX-T7030 telephone system in my home that is linked to my doorbell(intercom)--At random hours the doorbell will just ring and continue to ring when nobody pushes the button. I can hear a clicking sound coming from the main box. Can you explain what is wrong and how to fix it? I looked to see if there was an internal battery but there isn't. I appreciate your help. Thak you!
Submitted: 8 years ago.Category: Consumer Electronics
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Answered in 22 minutes by:
1/7/2011
Electronics Technician: Tas H, Application Engineer replied 8 years ago
Tas H
Tas H, Application Engineer
Category: Consumer Electronics
Satisfied Customers: 279
Experience: A licensed Electrical Engineer by Profession and passionate technology gadget guy by hobby.
Verified

Tas H :

Hi, My Name isXXXXX will be happy to assist you with your question today.

Tas H :

Can you further help me understand your current configuration between door bell and phone ? And does it operate OK in normal conditions as configured?

Customer :

I can explain the operation but not necessrily the configuration. When the doorbell rings I hear it in the house through the panasonic intercom system of the 2 telephones. If I pick up one of the telephone receivers before the 4th ring I can communicate with the person outside. Otherwise the system works as a telephone/indoor intercom system. It has worked well for quite a few years.

Tas H :

Thanks that helps. So beside the random door bell problem if you push the button outside it works normal ?

Tas H :

I think there is some kind of loose connection outside the door bell button or due to rain or splashes of water it shorts together and that activates the door bell. Off course i wont recommend checking the button or replacing the door bell button yourself unless you are comfortable and experienced to work on AC power. Also try to blow warm air on the door bell button using air blower. and let me know how this works. Please ask for more clarifications if you need. If you are satisfied with the help don't forget to hit ACCEPT. Your positive feedback is warmly appreciated. Thanks

Customer :

I will look at the connections where the doorbell is attached to the wall and where it feeld into the phone system to see if that is the problem--We have had an awful lot of rain lately.

Customer :

will let you know

Tas H : That explains, I am positive rain is the trouble maker. Make sure to check the button outside. Keep me posted
Customer :

will do

Customer :

Is there anything particular I should look for when I pull the doorbell cover off? Since this system is also integrated with my alarm system, could the battery running the alarm system cause the short?

Tas H :

Hi

Tas H :

I still think you need to check the door bell button outside which is exposed to weather. I am sure your actual door bell is indoor which is not the problem. I don't think the battery as such can cause the short when its dead or burnt its open circuit. Also your problem is not related to the battery problem. but doesn't hurt to do a quick inspection check the wiring connecting the batteries in the door bell.

Customer :

had alarm battery checked--it's good---took cover off exposed doorbell and it was dry inside and connection looks good-I think the problem may be at the interface box where all the telephone wires are connected, but I don't have the knowledge or tools to detect a short> I presume the first place to go is to an electrician rather than a communications specialist. Do you agree?

Tas H :

Before you go to the electrician or network/communication specialist. Can you confirm if you checked the door bell button outside the house the one people press to activate the bell. I agree nature of your door bell problem could be combination of both electrical and communication. to diagnosis further in depth start with the electrician to ensure any short or loose connection and most likely he would be able to check any interface connection between both system before going to a network/communication specialist. I hope i was helpful, please don't hesitate to ask for more clarifications. If you are satisfied with the help don't forget to hit ACCEPT.

Customer :

I will check the doorbell function, at gate and front door, today, when I re-hook up the 2 telephones, and get back with you.

Tas H :

Yes please do that. I am positive thats where the problem is. Keep me posted. Thanks

Tas H :

Please keep me posted with any update and dont hesitate to ask more clarifications. If satisfied with the help your ACCEPT and positive feedback will be much appreciated. Thanks

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