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I have a HPM D641/BLR doorchime unit but our tenants lost the push bell unit. I have bought a new push bell unit which says it is suitable for all D641 chimes but they don't seem able to 'see&

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Posted on Jan 02, 2017

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SOURCE: I have a desa TR-0081-BX

There is a little "diode" that should have been provided as part of the's a little wire with a B-B-sized circuit in the middle that has to be connected to the push-button at the door. This "extends" the circuit from the button to the chime unit for the full 8-notes. Hopefully you still have that part (I just about threw out mine before I read the instruction manual thoroughly. My diode just "shorted" after I power-washed my house...and I am in search of that particular part. I contacted Heath Zenith...hopefully they will give me a solution on how to get only that part. In any case, you need that diode to get the chime to play correctly.

Posted on Mar 27, 2011

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SOURCE: Hello I have now got 2 (two) of these units

This looks like the Heath Zenith SL6162/63


I have the pdf of install manual if you would like it. This wireless doorbell has over 128 codes that prevent outside interference. Here's part of the manual for changing the code:

Note: Most installations will not require you to change any of the jumpers
on your doorbell.
The doorbell button and chime communicate by using a code that can be
changed by removing and/or adding jumpers on both the doorbell button and
chime. The code is factory set; however, there are 128 selectable codes that
allow you to expand your system and prevent outside interference. Another
wireless doorbell system or other wireless products may cause interference
and the system may not function properly. Follow the instructions below for
setting a new code.
1. Disconnect the power to the doorbell button and chime.
2. Open the cases and locate the jumpers on both the doorbell button and
chime (See illustration).
Attach the back of the
case to the door jamb or
wall. Snap the front of the
button back on.
Holes for
Wall Mounting
595-5611-06 - -
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
Doorbell Button Battery Replacement
Install an alkaline type A23 12 Volt battery. The
positive terminal should be positioned as shown.
* Code Settings 1-7
Must Match Both
Doorbell Button and
Inside Chime
3. The doorbell button and chime both have eight different jumper locations.
The jumper positions 1 through 7 are used for setting the code.
4. To change the code, add and/or remove jumpers as needed. There are 128
different combinations. It is recommended to only change one jumper at a
time and then check to see if system is functioning properly. Note: Jumpers
in positions 1 through 7 must be exactly the same for both the doorbell button
and chime for this system to function.

Posted on Jan 13, 2010

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SOURCE: 'Doorman' chimes keep chiming, without bell being pushed

I had the same problem - turned out to be a cordless phone nearby. If you have one, try moving the bell away from the phone or vice-versa. Another possibility is a neighbour with the same code. There are some jumpers you can move around to change this.

Posted on Apr 22, 2010

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SOURCE: why does chimes sound when no one as pressed bell...

water can get into the button on door inside is a spring that pushes a part of the switch away from the other and when someone presses it they join together and bell sounds but if the rain gets inside it can make an electrical connection between the two points open it up and see if there is any trace of water the just put a bit of pva glue over the top join on the switch it will water proof it and will also be easy to remove or it could be a low battery or if mains anything can set them off mobile phones tv any thing that sends a rf signal its best to have as small a gap as possible between the two units

Posted on Jun 05, 2010

  • 4736 Answers

SOURCE: I have a desa

Sandra, the contacts in bell push may need cleaning, as well as some minor readjustment of the contacts. Insects love to get into the bell push and can clogged it up. If you find that this doesn't solve the problem, Contact the Zenith Company 800-858-8501 to purchase a replacement.

Posted on Mar 09, 2011

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Looks like the gate was broken after the tenant moved out as most vandalism occurs to vacant property and a broken gate would surely have been seen by anyone entering the property. No way to win this one. They did the inspections and recorded the findings.

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Open the back of the door chime and the button press.

On the back of both of them there is a set of jumpers.

From left to right there are 6 available frequencies. You need to grab to jumpers to join 2 of the pins together (top and bottom pin). If you don't have a jumper just use a set of pliers and cross the 2 pins together (top and bottom pins) on a channel you wish to use. Repeat the process for the button press if you've just done the door chime. The 2 pins that you've joined together needs to be the same as you've just done for the door chime.

Note the red jumper on the button press, selects the type of door chime you want to hear. this is the 4 right hand side pins on the button press. The far right is a long chime and second in from the far right is a shorter chime.

Hope this helps, figured it out by trial and error. :)

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Do you have the correct/original power supply, and it is having problems of some sort? If so, you might be able to do some repairs. A common problem is often one or more of the electrolytic capacitors is bad. Take the cover off, and look for bulged capacitors (top of the capacitor pushed up & out). If you find one or more of these, replacement may return the p/s to working order.

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