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#625845 - 11/30/18 08:30 PM T-29G Black Screens  
Joined: Feb 2007
Posts: 4
infotel Offline
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infotel  Offline
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Joined: Feb 2007
Posts: 4
Richmond, VA
I have been having issues with multiple yealink T-29G bricking on a reboot. The red light will be solid on the top right and the screen will be black. The phone itself is unresponsive. Has anyone else had issues similar to this? We have noticed there is a similar MAC Address range for the issue, the first three octets being 80:5E:C0.

Thank you.

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#625846 - 11/30/18 09:13 PM Re: T-29G Black Screens [Re: infotel]  
Joined: May 2002
Posts: 3,764
hitechcomm Offline
Moderator-Avaya, Polycom
hitechcomm  Offline

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Joined: May 2002
Posts: 3,764
New York, NY
Is it POE or power brick

#625850 - 11/30/18 10:13 PM Re: T-29G Black Screens [Re: infotel]  
Joined: Jun 2006
Posts: 22
ThePhoneConnection Offline
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ThePhoneConnection  Offline
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Joined: Jun 2006
Posts: 22
Long Beach, California
I just had the same issue last week with same 80:5E:C0 I had unplugged the phone plugged it back in same Issue Blank Screen Red Light (They have POE) Then just yesterday I had a customer email me that 3 out of there 35 T-29 have blank screens (They have POE Switches) Funny same MAC starts with 80:5E:C0 ???

#625929 - 12/03/18 10:01 PM Re: T-29G Black Screens [Re: infotel]  
Joined: May 2002
Posts: 3,764
hitechcomm Offline
Moderator-Avaya, Polycom
hitechcomm  Offline

Moderator-Avaya, Polycom
*****

Joined: May 2002
Posts: 3,764
New York, NY
Try using a power brick. Could be the POE router

#625977 - 12/05/18 03:03 PM Re: T-29G Black Screens [Re: ThePhoneConnection]  
Joined: Jul 2006
Posts: 2,311
Carl Navarro Offline
Moderator-Panasonic
Carl Navarro  Offline

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Joined: Jul 2006
Posts: 2,311
NW Ohio
Newsflash: They ALL start with the same 6 characters. That's the manufacturer ID. All of my Yealink family phones start with that, even the 27's and 46s.(*)

There was a bad batch of phones made. I'm not sure when, but I had one failure out of about 20 sets purchased between April and August. A call to my vendor got an RMA.

Carl

(*) To be fair, not ALL Yealink phones start with the same 6. Earlier series, like my T28P phones start with 00:15:65


Last edited by Carl Navarro; 12/05/18 03:21 PM. Reason: added footnote

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