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High pitched ear piercing tone when turned on.

. loud high pitched tone when turned on, radio came on a few times but went to ear piercing tone very quick. now when turned on thats all it does imediatlly without even turning volume up.

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  • 41 Answers

Sounds like you have a crossed wire somewhere

Posted on May 25, 2009

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Posted on Jan 02, 2017

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Both of them are refusing to turn on, and make high-pitched sounds when plugged in and unplugged. More about : turning making high pitched ...Missing: ear ‎piercing

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We unplugged the unit and waited 15 - 20 seconds and plugged the unit back in, and it wouldn't ... He heard a loud high-pitched whining which led him to TV in my daughter's room. ... It only makes a humming sound now, no pictures at all.Missing: ear ‎piercing

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Hi I have a very annoying, ear piercing high frequency pitch coming from what seems to be the television. However, I was trouble shooting and based on the cable technicians thought; said to be the...


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The LOT [Line Output Transformer] of your TV has damaged. It is the one, that supply all the voltaged needed to CRT. Its internal windings will get shorted in between, and is irreparable. Replacement is the only remedy to this proble. Replace the horizontal output transistor also with this. you haven't specified whether there is picture with your tV or not. If this high frequency sound is along with picture, there is some loose in the cores of the SMPS transformer, or LOT itsef. If there is no picture at all, and this high frequency sound is there, no doubt; LOT is damaged. OK.

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