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-   -   doorbell buzz troubleshoot HELP (http://www.diychatroom.com/f18/doorbell-buzz-troubleshoot-help-114223/)

bergerdude 08-16-2011 11:36 AM

doorbell buzz troubleshoot HELP
 
Hi,
I have gone thru the postings and I am currently stuck what to try before I try replacing parts.
My doorbell buzzes when pressed. With the button taken off, the bare wires still make only a buzz even after sanded for possible corrosion.
The voltage IF I followed the directions on the voltmeter properly!?..reads 21.3...at the bell and coming out of the transformer...so the wiring is fine.

IS this voltage too high?

gregzoll 08-16-2011 11:41 AM

Depends on what the transformer is supposed to output. Most are 24 volt transformers, some are 48. If the inside unit is buzzing, how old is it, same for the transformer and doorbell switch.

DangerMouse 08-16-2011 11:41 AM

Quote:

Originally Posted by bergerdude (Post 708530)
My doorbell buzzes when pressed.

Isn't that what it's SUPPOSED to do?

DM

bergerdude 08-16-2011 11:42 AM

This is the same problem in 2 years, 4 year old house. Last time they changed out the transformer....do I start there?

bergerdude 08-16-2011 11:50 AM

It's a doorBELL not a door BUZZER..lol. So the doorBELL should "ding" not "buzz.". Sigh...I guess I need to be realllllly specific for some.

I can see NO stamp for a 24v or 16v on the transformer itself....

Do I replace the transformer or the chime unit first?
thanks

Code05 08-16-2011 11:54 AM

Many doorbells use a 16 volt transformer. What voltage is the doorbell labeled for?

a7ecorsair 08-16-2011 12:08 PM

If you read the secondary of the transformer without a load - no button pressed, then a 16 volt transformer may read about 21 volts.
Try reading the secondary side while someone presses and holds the button.
Next, take the cover off the chime box and watch the plunger. Have someone press the button. The plunger should pop out and hit the chime but then retract slightly. The spring is what holds the plunger back.
Next, check to see if the plunger is binding. Flick it with your finger. It should float back and forth a little.

bergerdude 08-17-2011 02:17 PM

ah I looked at the chime/bell and there were two plungers. One had the top and bottom plastic spring holder/caps plungers MELTED off and the spring was loose in the cover.

That plunger was frozen with the bottom plastic spring holder/cap melted to the chime bar...hence the other side would strike but was muted by the melted one. did it probably freeze up and get hot...melting the plastic ends?

Am I done or could the transformer be bad and this caused the failure?
The transformer is in a tough area to get to....if I don't need to, I'd rather leave it alone. :-)

right now the bell goes "dong" since the "ding" is still frozen. :-)

I will need to get a new chime eventually, I just don't want a fire hazard.

Thanks!

gregzoll 08-17-2011 02:41 PM

Sounds like someone laid on the button, and when the coil got stuck, or due to multiple striking, that can cause it. You do not have to replace the transformer, just the bell unit in the hall. Some units come with the buttons, bell unit, and transformer. They are not that much, since you can get the bell/chime unit itself for under $20.

rjniles 08-17-2011 02:52 PM

Quote:

Originally Posted by bergerdude (Post 708539)
It's a doorBELL not a door BUZZER..lol. So the doorBELL should "ding" not "buzz.". Sigh...I guess I need to be realllllly specific for some.

I can see NO stamp for a 24v or 16v on the transformer itself....

The Mouse was making a joke:)

Look at the xformer closely, I have never seen one that was not marked with a rating.

Often the problem is the bell/chime is coated with dust, they are dust magnets. Blow the unit clean with compressed air (or a reversed vacuum cleaner). Check the that the hammer that hits the gong moves freely.

DangerMouse 08-17-2011 02:58 PM

Quote:

Originally Posted by rjniles (Post 709387)
The Mouse was making a joke:)

No I wasn't. I was being mean, vindictive and rude.
I hadn't had my 5 pots of coffee yet, what can I say?

DM

Thurman 08-17-2011 05:21 PM

Let's face reality in today's world: A new transformer, or a new chime unit may cost you as much or more than one of the newer, very nice remote doorbells units.
The chime unit on these only need to be mounted where you desire it to be, then button mounted on the door(s) where you want them to be, and put batteries in them.
NO hard wiring to be done.

dmxtothemax 08-17-2011 05:48 PM

Quote:

Originally Posted by bergerdude (Post 709365)
ah I looked at the chime/bell and there were two plungers. One had the top and bottom plastic spring holder/caps plungers MELTED off and the spring was loose in the cover.

That plunger was frozen with the bottom plastic spring holder/cap melted to the chime bar...hence the other side would strike but was muted by the melted one. did it probably freeze up and get hot...melting the plastic ends?

Am I done or could the transformer be bad and this caused the failure?
The transformer is in a tough area to get to....if I don't need to, I'd rather leave it alone. :-)

right now the bell goes "dong" since the "ding" is still frozen. :-)

I will need to get a new chime eventually, I just don't want a fire hazard.

Thanks!

Are you going to replace it ?
Or have a go at fixing it ?

AllanJ 08-17-2011 09:22 PM

The bell unit won't overheat unless the button at the door got stuck or someone held the button in.

Jamming of the plunger or dust by itself won't cause the bell unit to overheat.

bergerdude 08-18-2011 08:43 AM

Quote:

Originally Posted by DangerMouse (Post 709396)
No I wasn't. I was being mean, vindictive and rude.
I hadn't had my 5 pots of coffee yet, what can I say?

DM

No problem eitherway, I appreciate all input. :laughing:
humor is always appreciated especially when the house is seemingly falling down around me from week to week. The joys of home ownership!

I got the one plunger working, and I will replace the unit entirely when I am able. HD's replacement transformer looked the same as the one that is up in the rafters surrounded by conduit and ductwork. I'm sure it is stamped somewhere, but not where I could see.

Thanks everyone again for the help :thumbup:


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