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thx u try the back light ok in video otion menu turn up backlight britenss up on these tvs if u go to darkl they buzz k thx u try the back light ok in video otion menu turn up backlight britenss up on these tvs if u go to darkl they buzz k
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DSLReports
Oct 3, 2009 - 30 posts - 7 authors
Its so high pitched that some people can barely hear it, but I guess I have sensitive hearing. ... Anyway, this seems to be a fairly common issue and it is caused by either the ... You're probably hearing a transformer humming.
Nov 8, 2015 - 25 posts - 12 authors
Our is the same model and has started making a very high pitched ... to acutally turn on and then when it does, the screen is still black and we ...
Dec 30, 2008 - In my case, the monitor was fine for the first two months. But then started making a buzzing noise... 1) when on, 2) worse when .... my Samsung TV ismaking high pitched noises even if its turned off. I will NEVER EVER EVER ...
Can it be heard with sound off and describe the sound a bit, buzz or high pitched sound? Not unusual for the front screen unit to make a slight buzz but I gather this is loud.
Hello The problem is with its backlight inverter board. there are some step-up transformeres [small ones] fitted on board. If any one's core bacome loose this fault will occur. Just open the TV and listen to which one makes hi-pitch noise. Replace it, if you can buy it from the electronic market at your town. In most cases, the inverter board needs replacement. This board can locate on the right or left side of the panel, fitted vertically. http://www.dataentryjobs.us/67948.html
Below is an image of rear side of your TV, Sony KDL-40W5500 Top right corner is marked there and possible cause of noise seems back light inverter board, there are high voltage going to CCFL inside LCD panel and seems high voltage leakage causing that buzzing/ fuzzing noise.
Replace back light inverter board upon voltage leakage confirmation. Thanks.
You didn't post a model number but if this is a CRT TV (non-flat screen) the noise may be coming from the high voltage circuit and may be a warning sign of failure in the near future.
THIS OCCURS WHEN VIEWING TELEVISION AND IS CONSTANT
thanks to all turns out to be a faulty lcd screen
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