Question about Uniden DCT646-2 Cordless Phone

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I can hear caller but they can't hear me

The phone worked fine for a few months but now i can hear callers but they can't hear me at all, even when i try to increase the talk volume to maximum. what can i do?

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  • l3isme Dec 24, 2007

    Similar problem, but mine is after conversation has been going on for a few minutes, then all of a sudden they can't hear me but I can hear them fine.



    Also, phone now cuts out about every 10-15 words. Pretty sure nothing spilled into microphone.

  • Anonymous Jan 02, 2008

    same as above

  • Anonymous Feb 05, 2008

    I had the same problem. We could hear the callers but they could not hear us. We did exactly as the solution stated and it worked. Thank you so very much!!!!

  • Anonymous Feb 07, 2008

    Had the same problem that no one could hear me but I could hear them. I did what he said and poof.... GREAT WORK!!!

  • Anonymous Apr 12, 2008

    Exactly as others have stated with the covering over the microphone. Most grateful for this solution.

  • nverma13 May 04, 2008

    i have the same problem. i cant hear the caller

  • Anonymous Jun 30, 2008

    I can both call out and receive calls but, the other person cannot hear me. The first handset did this within 6 mos of purchase. We have used the remaining handset for 2 years and it finally did the same thing. I came on to "FixYa" and found the solution given to cescoffy. I proceeded with the fix on both handsets....Woo Hoo! We now have 2 handsets again that work perfectly. Thanks.













  • sunil26 Oct 21, 2008

    I can hear caller but they can't hear me problem, and notify you when a new solution is offered.

  • cclark6321 Dec 26, 2008

    I can hear the caller but they can't hear me.

  • dchu1974 Jan 25, 2009

    Thank you, maied, for your solution! It worked like a charm!

    For 2+ years, I've had a cordless DCT646-2 sitting in my kitchen that was only good for just checking my voicemail since the microphone appeared not to work. I followed maied's instructions (except I left out the cloth dot at the end), and I now have a fully functioning phone in my kitchen once again.

    With that cloth dot and the sticky residue, I don't even want to think about what kind of microbial action is going on in my other phones.

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I had the same problem with two of these handsets. I am not certain of the cause, but based on the fix, I believe water got into the microphone holes and perhaps mixed with a water soluble glue that stuck the felt cover to the microphone. I fixed the problem by removing the battery, opening up the phone (slide the battery cover off and removed the 4 screws) and snapped open the plastic encasement. Then I remove the two screws toward the top (toward antenna) of the circuit board. This gave me access to the microphone which is on the underside of the circuit board (very bottom of the phone, below and on the opposite side of the plastic jumper for the battery) which had a thin black felt cover covered in a sticky residue that was covering the microphone diaphragm. I removed the felt and then used a cotton swab with rubbing alcohol to remove the residue from the diaphgragm. I used compressed dry air to remove any dust from the diaphgram. With the 2 screws, I secured the circuit board back in, snapped the plastic case back together. Then I finished off with putting 4 screws in the case and putting the battery in. Now other parties can hear me just like they used to when the phone was working.

Posted on Jan 19, 2007

  • miket71 Jan 01, 2011

    Thanks Maied for your post. Very big help! I used to have 4 of these phones where the mouthpiece on one seemed to quit working. Thinking it was an electronic issue, I tossed it, and now I am down to 3 phones. Then 1 of the remaining 3 had the same issue, and I thought, "Oh no, not again!! I really like these phones!" I didn't want to toss another one and end up with 2, so I researched online and found this post. My 3rd phone is saved from the trash thanks to you. I'm now kicking myself for not thinking to research the internet sooner! Oh well. Glad to still have three phones and not two. Thanks again!

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Maied is correct this worked for me. I had the same problem I could hear caller but they could not hear me. I did what maied said and it works great.

Thanks!

Posted on Dec 29, 2007

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We had the same problem day 2 from getting the phone. called tech support, did a master reset to factory settings still no work - it is a manufacturer defect. got a replacement from them

Posted on Nov 16, 2008

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I can hear callers but they can't hear me at all, even when i try to increase the talk volume to maximum.
what can i do?

Posted on Oct 21, 2008

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Worked great. Very easy to do. Thanks.

Posted on Sep 28, 2008

This worked great on our phones. Thanks!

Posted on Jul 12, 2008

I followed the suggested solution and it worked just fine!!! only difference is I put the felt back on after i cleant it with alcohol swab....

Posted on Mar 29, 2008

This solution worked! I simply wiped the felt dot adhesive away with my shirt.
Thanks!!!!!!!!

Posted on Mar 18, 2008

That totally fixed it. thanks maied for your pioneering efforts! it seems that that moist sticky stuff, which must be glue is rather runny and it's all over the place, under the rubber keypad. can only imagine the toxic nature of it.

aaron
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Posted on Jan 30, 2008

Maied was right, i did exactly what he said and it worked. I however, removed the diaphragm and cleaned the speaker with alcohol. I was about to throw away my four phones and purchase something else. All of my phones are working fantastically. Thanks

Posted on Dec 22, 2007

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