One of our handsets does not work at all (will not charge, does not work with new battery). How do I de-register it so that I can assign another handset to that number? Note: We have 6 handsets all assigned.
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Re: Panasonic KX-TGA400B De-register handset
You do not need to power up the handset to delete the old intercom number, you do this on your base station. At your base push Function, then scroll up to Registration, push Enter, scroll to de-registration, push enter, scroll to the right and highlight that intercom number that you wish to delete, push Enter then Clear. If your not sure which intercom number it was, take a piece of paper and a pen and look at each functional handset you have, and notate the intercom number which is in the upper right hand corner. You can send your dead handset in for repair to have a backup, so don't toss it.
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This solution is for the KX-TG2356 cordless phone
The problem you are having is not that the handset is de-registering but your handset is losing the link to the main base.You said you went through 6 handsets then, the only remaining thing that could cause your problem is: A bad handset battery. This would give you all types of connection problems and the Main base.
I will begin with replacing the battery. If that does not solve your problem then the problem would be the main base
For the KX-TG5672, you should press and hold the Intercom button until the charge indicator flashes. Then press the button to assign the handset # 1, 2 or 3 (keypad 1, 2 or 3). Then press OK on the handset and wait for the handset to beep. These steps must be done within a minute from when the charge indicator flashes. It's best to have the base and the handset close together when you register the handset.
If you still have a problem, try removing the battery from the handset and disconnecting the power cord from the base (from the wall and the base itself). Wait a few minutes and then reconnect the power cord and the battery for the handset. (Make sure that the base has power and the adapter is warm.) Then try registering again.
This is a very common problem with the KX-TGA400B and KX-TGA200B handsets. You need to replace the keypad or send it out for repair. Google "KX-TGA400B improved rubber keypad". Do not use the original factory keypad, the contacts are to small.
Sorry for being off line so long. If you have not fixed the problem already, I would try de-registering the handset 3 (from both the base and handset), then re-register it, it should re-register as HS 3, unless 1 and 2 are vacant. If that does not do it, de-register just the handset (not at the base), then re-register it to the base, it will grab the next sequencial intercom number. If it is still failing, then the handset is most likely defective. As a last resort, you can try initializing the handset and the base. Let me know how it goes. CG
You may have a bad base. Do you have other handsets that are running okay on your base? Are you confident your going through the registration procedures correctly with the replacement handset? Did you have a storm come through preceeding your problems?
I have a Panasonic KX-TG6700 base unit and KX-TGA670B handsets. We had a similar problem where we were no longer able to deregister the handset using the handset itself. We wanted to be able to use that slot that the broken phone was still occupyng. The solution that we found in the manual online was to hold down the intercom button for 3 seconds until the "in use" light turned on. Then press and hold the number of the extension you want to deregister until it beeps. At this point the base unit has freed that extension.