Phone says no link to base reconnect to mainbase ac addapter

Disconnect the AC adapter from the unit, wait for 5 seconds, then reconnect. The plug may have become loose over time or not be fully inserted. If that does not work, try re- registering the handset.
To re-register, see screenshots attached.

I couldn't find the exact manual for your phone but I would try to re-register the phone. Following are some instructions for similar models of your phone.

*To do this on a non-expandable cordless phone:

• Press and hold the LOCATOR/INTERCOM button on the Base until a beep sounds.
• Press and hold the FLASH/CALL WAIT button on the Handset until a beep is heard.
• When registration is complete, a beep sounds from the handset.
• Wait for 20 seconds after registration is complete to allow the handset to establish communications with the base.

If this fails to help: Remove the AC Adapter from the phone base or wall outlet for a few seconds and reconnect. It may also be necessary to remove the battery from the handset for a brief moment.

Good luck!

The situation is that a KX-TGA931T reads out "No link to base. Reconnect AC adapter". This is what I saw on one of the used handsets I recently acquired.Unplugging and replugging either AC adapter (base or peripheral) does nothing. But the other otherwise identical handset that recently arrived evidently had different firmware, which more helpfully read out (I may be paraphrasing) "Press Locator button base for 4 seconds, then press OK." This instruction may need just a little elaboration. On the base, the lower right silver button is labeled LOCATOR INTERCOM. On the handset the upper right rubber button may have "OK" on the LCD screen above it, so when it does, it is the OK button. First make sure the base is plugged in and that you have at least a little charge in the handset. Then press that LOCATOR button (for about 4 seconds) until it beeps. It will begin to beep periodically for several cycles. While it is in this beeping mode, press and hold that OK button until it beeps. If you let go too soon, the screen reads "Error!" so just try it again, and wait for the beep. After the beep the screen reads (I may be paraphrasing) "Registering handset." This takes a few seconds. Then it is registered and when you press TALK you'll get a dial tone. Now you don't have to pay $5 for a chat with Panasonic or have to download a manual's PDF (if they even have it) and have your internet search switched to Yahoo. I do not know how many handsets this base will take - now I have 6 registered to it.

This may help. It's from the Panasonic help page:

You may try to:

Disconnect AC power adapter from the back/bottom of base unit, then connect it again properly.
OR, to resolve this issue, you have to re-register the handset.

• To do this on a non-expandable cordless phone:
  Press and hold the LOCATOR/INTERCOM button on the Base until a beep sounds.
  Press and hold the FLASH/CALL WAIT button on the Handset until a beep is heard.
  When registration is complete, a beep sounds from the handset.
  Wait for 20 seconds after registration is complete to allow the handset to establish communications with the base.
  If this fails to help:
  Remove the AC Adapter from the phone base or wall outlet for a few seconds and reconnect. It may also be necessary to remove the battery from the handset for a brief moment.
  
  
• To do this on a expandable cordless phone system:
  Press and hold the LOCATOR/INTERCOM button for the extension that is displaying "No Link To Base" on the Base until a beep sounds.
  Press and hold the FLASH/CALL WAIT button on the Handset that is displaying "No Link To Base" until a beep is heard.
  When registration is complete, a beep sounds from the handset.
  Wait for 20 seconds after registration is complete to allow the handset to establish communications with the base.
  If this fails to help:
  Remove the AC Adapter from the base or wall outlet for a few seconds and reconnect. It may also be necessary to remove the battery from the handset for a brief moment.

The handset has lost the link with the base. This link codes the handset to the base with a unique security code so others with the same phone cannot use your phone line.

If you changed the battery, try disconnecting the base telephone line and ac adapter for a while (1/2 hour or so if possible).

Remove the battery from the handset as well.

After 1/2 hour, install the battery in the handset, connect the telephone line and ac adapter to the base. Place the handset in the charging base and the link should be established. If not, the phone is defective.

[email protected]

I had a similar problem which I finally fixed. You did not say if any of your phones registered.
First try the following recommended by Uniden Support:
Your phone(s) should be fully charged before putting them on the main base.
Unplug the battery from the phone by removing the battery cover and removing the connector. Then, push the # and * key together and hold while you plug the battery back in (requires some dexterity). Continue to hold the two keys until you hear a confirmation tone. This will force the phone to reregister. Put the phone on the main base (if you are sure it has a fully charged battery) and see if it will reregister it to solve the problem.
That did not work for me. So, I followed the instructions to de-register the handset (even though it hadn't really registered). But, I also pretended like the Base was not available (because using the base in this step also failed).
1) Press and hold the hang up and # keys for at least 5 seconds.
2) Move the cursor to select Base Unavailable and then press Select.
3) Select the base you want to deregister from, press Select and then move the cursor to Yes and select.
This causes the phone to delete any of its base information.
At this point, again insure that your phone shows the battery is fully charged and if it is not, put it on the stand alone charger base (not the main base). With the battery fully charged, place it on the base and try registering again by placing it in the main base.
If neither of these approaches help, contact support at Uniden.com.
However, my problems were cleared when I cleared the handset with the second set of instructions.

My handset does not connect to the base station. It flashes momentarily, but does not find the base. The base station has a humming noise when the phone line is disconnected and the talk button is depressed. Hum is also present when the phone line is reconnected. The problem was resolved by replacing the 9VDC power supply. The hum disappeared and the handset immediately connected to the base.

The following worked when I had what appears to be the same problem. Solution :- Remove batteries, remove power connection, wait 30 minutes, re-connect power and replace batteries then press button on base until it beeps. Both handsets started continuous beeping which eventually stopped and everything was returned to normal. Admittdly this sounds almost identical to the process used by 'versailles' above, but at least it confirms that the technical info given by the BT Helpline does work

from a different brand portable phone - - it worked for me! "If you experience difficulty with placing/receiving calls, a lost security code may be the problem. The handset cannot communicate with the base. Unplug AC adapter. Disconnect handset battery for 10 seconds. Reseat the battery and then place in base. Replug AC adapter."