Avant 55 - high frequency sound from rear speaker

2 replies
DE
Offline
David Eyre
Bronze
Posted July 30, 2024 at 12:21 GMT
#1643836
All,

I have had a Avant 55 since 2014 and other than having the video card replaced the TV has worked well.

 

Recently, however, I am experiencing a high pitched frequency sound coming from the rear speaker at the back left side of the TV.  It doesn't happen all the time, and lasts for 1 second or so.

 

I've replaced the HDMI cable, and swapped the Roku from connection 1 to 2, and it still makes the sound. It happens even when the volume is turned off, and seems to occur when I touch the back of the TV.

 

Any ideas on what could be causing this and how to resolve?
JA
Online
jacek1313
Bronze
Posted August 3, 2024 at 17:16 GMT
#1665711
In one Avant, one of the power supply transformers was squeaking; at first it seemed to be the loudspeaker. A piece of plastic and varnish solved the problem.
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