Question about Zenith C27F33 27" TV

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High pitch noise

I have 2 of these televisions in the bar I manage. They are both 3 years old. They have begun to give off a high pitch noise. It could be after 20 minutes of use or up to 3 hours of use, or anything in between. Turning them off, resting (say 1/2 hour) then turning back on only eliminates the problem momentarily.

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Re: High pitch noise

What you are hearing is the mechanical vibrating of coils & or transformers in the tv. 1st and easyest is to hot glue the parts that is making the noise down. if that does not work, removing & reinstalling the part is next. the last is replacement. the most likely parts causing is the 1. horizontal linearity coil, 2. the run or switch mode transformer, or 3. the flyback transformer. good luck.

Posted on Jan 09, 2007

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