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Hi pitch noise from the back near the top of L.c.d flat screen had to send two back and now have a sharps set which makes a noise now and again is it a normal issue

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You could have a electricial short or a oscilating transformer ( a transformer that is viabrating ) that it is coming from the top could mean that is high voltage. Do you have a lot of dust in the house ? that attracks high voltage.

Posted on Nov 07, 2008

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The part is readily available on the internet (Google the model number with "color wheel").

This can be a do it yourself repair and You Tube has video instructions for replacing the wheel by model number.

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