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T28P Handset Noise Problems
Author Message
Walter
Unregistered

 
Post: #13
RE: T28P Handset Noise Problems
Dear Support,
we have same problem with T26.
At the moment we have installed more or less 900 pcs.
We observed a 10% of faulty handset.
The problem is a noise listened (as 50Hz buzzing),
but the issue come out after a short period of using (like 1 or 2 month) not immediately soon installed.
My opinion is the cause is the welding on the electret microphone.
I had same experience issue with telephone of other vendor .
Immediately Solution (workarround); give it a "shot" at the handset.
Definitely Solution : change the handset.
Repair the Handset: replace the welding or remove the "silicone" on the welding.

Sorry but I have not the serial number of the telephones affected.

Regards
Walter
06-18-2014 09:18 PM
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Messages In This Thread
T28P Handset Noise Problems - fdtcloud - 02-20-2014, 07:18 AM
RE: T28P Handset Noise Problems - fdtcloud - 02-21-2014, 12:08 AM
RE: T28P Handset Noise Problems - braymond - 02-27-2014, 10:58 AM
RE: T28P Handset Noise Problems - braymond - 03-04-2014, 09:49 PM
RE: T28P Handset Noise Problems - fdtcloud - 03-07-2014, 06:16 AM
RE: T28P Handset Noise Problems - temp0001 - 03-09-2014, 12:01 PM
RE: T28P Handset Noise Problems - Walter - 06-18-2014 09:18 PM
RE: T28P Handset Noise Problems - braymond - 06-19-2014, 07:50 AM
RE: T28P Handset Noise Problems - Walter - 06-20-2014, 06:43 PM
RE: T28P Handset Noise Problems - belcom - 01-03-2016, 10:11 AM
RE: T28P Handset Noise Problems - mbello - 08-23-2016, 10:59 PM
RE: T28P Handset Noise Problems - belcom - 08-24-2016, 06:30 AM

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