Question about Uniden TRU4485-2 Cordless Phone

8 Answers

Phones stopped working

Our two handset Uniden 2.4 ghz and our Walmart special have all quit. When you pick up one of the Unidens, there is dead air, almost like someone is on the line, but no dial tone. Nothing seems to help. I checked the line outside, we are in a RV, and it is connected, but the line was picked up by the maintenance guy to cut the grass. Thanks so much for any ideas as to what is wrong.

Posted by Rebecca Johnson on

  • 4 more comments 
  • leejg Nov 17, 2007

    We have 4 VTech phones and after a short incient where the incoming phone line was accidentally disconnected, all the phones went dead and we couldn't call out or get calls and there was no dial tone. How do we get the phones O.K. and working again? The incoming phone line was reconnected after about 10 hours of being disconnected from the wall.

  • Anonymous Dec 08, 2007

    i was in the middle of a conversationa nd suddenly the line went dead, yet it sounded as though someone else in my home picked up a phone, although we only have 1 phone, the one i was on. when i would speak there was a loud echo, like an intercom. i have tried everything to fix this. we have no dial tone, and can not call out, and all incoming calls (ringtone can not be heard) go straight to our voicemail. i know the battery is charged, and everything seems connected. please help!

  • pink cadilac Jan 04, 2008

    I have TRU 9280 Series , one base, two extensions. while talking on one ex phone went dead - all 3 are dead, tried all suggestions in back of manual. Am now down to using my old (2) phones (attached to the wall) but ofcourse have lost the answering maching.

    PLEASE HELP [email protected]

  • Anonymous Feb 15, 2008

    when receiving call sometimes have to press talk and other times i don't

  • 2Cor7_1 Apr 19, 2008

    I have the DXI 5686-2, a 5.8 GHz extended range cordless phone I bought from Target 6 months ago. Both phones were "fuzzy" even when I first used them. We ended up only using the main phone and it was only acceptable within a few feet of the base.

    It has all of the sudden stopped working. There is "dead air" as described in another posting when I push the talk button. The red light is still on and the other phones in the house work - both cordless and land-line. Target won't replace it because it has been longer than 3 months and I don't have a receipt. Any suggestions on a fix? Will Uniden replace it?

  • Anonymous Sep 01, 2008

    dead air almost someone is on the line but no dial tone



8 Answers


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I don't have a solution, but I can say that my phone does exactly the same thing and I know for a fact it isn't the line because I'm using another phone on that line right now.

Posted on Nov 29, 2006



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I have the same problem if my cable ever goes out since I get my phone service through the cable company. Try another phone and see if that works and if not it's time to call your phone company.

Posted on Feb 16, 2008



I had the same problem. I finally just unplugged everything from the phone and the batteries and let them unplugged for about 5 min. When I put everything back together it worked. Hope it works for you.

Posted on Feb 14, 2008


Check the batteries if they are working with the help of a mulimeter

Posted on Dec 06, 2007


Make sure that the jack are in properly and then make certain that the battery is properly installed in the phone. I did this and problem cleared up

Posted on Jun 29, 2007


Can't suggest a solution; but, can let you know that another phone plugged into the same line works fine. Obviously, it's NOT a line problem. Thx anyway.

Posted on May 30, 2007


My troubleshooting instructions tells me to "unplug the base unitsAC adaptor to reset the unit and then reconnect the adaptor and try again." I did and it worked, However I have had to do this several times during the past week.

Posted on Jan 17, 2007


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Sounds like a line problem. Take the phone to a friend to test on a known good line and post back. If the phone works on another line, better call the phone company. Good luck

Posted on Jun 12, 2006

3 Related Answers


  • 76 Answers

SOURCE: No dial tone on handset

It may not be registed with the main unit. You may need to register the handset. With my uniden all i have to do is put it in the main base until it says what handset it is (it should be a number).

If you have any questions please dont hesitate to ask

Posted on Dec 02, 2008


  • 12 Answers

SOURCE: adding a new handset

You need to register the new handset with the base.
In Global settings De-register the new handset then place it on the main base unit connected. It should then register.

Posted on May 04, 2009


Julia Young-Flood

  • 3 Answers

SOURCE: No dial tone and no ring on Uniden 5.8 GHz

I have the same handset and the 2nd one seemed to stop working after working great for 2 yrs. I placed both sets together and hit the PAGE button on the main handsets cradle. Both phone's were paged and, for some reason, the 2nd handset reset. It worked for me...or at least, something in what I did worked. BTW, H1 and H2 shows in upper right side (or at least it did after I paged)...and I made sure to put the phones in the correct cradle (H1 is the main handset). I just did this so hoping it continues to work!

Posted on Oct 23, 2009

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