Question about Zenith D52WLCD 52" Rear Projection HDTV-Ready Television

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Get a weird zapping noise

My tv will not turn on, when i push the power button you can hear a zapping noise like one of the pesky outdoor bug zappers. What should I do?

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Sounds like theres a short, most likely the flyback transformer
take in for service

Posted on Dec 05, 2007

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Posted on Jan 02, 2017

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If you have no power from the grid then bug zapper is not problem. If bug zapper is a corded plug in application then unplug and plug into a plug in that you know works. Check your breaker panel for a tripped breaker and reset if necessary. Or try a different appliance by plugging something that you know is operational into the same plug. If it works, there is likely an internal problem in bug zapper.

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This may be an electronic style air filter which causes a bug zapper noise when "zapping" dust. I was out doing some research myself on them which is how I came upon your question. It seems they need to be cleaned carefully; which I am seeking instructions for. Best of luck in your ventures! Do some research, they are expensive to repair if you break them in the process of trying to clean or remove them. This page did a decent job at explaining the why it zaps part. http://dhclimatecontrol.com/filter.htm

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Why is my Oreck XL is my air purifier arcing?


If it was just clean recently, it's probably picking up dust particles and that's what you hear or see arching, like a bug zapper.And conversely, if it has been cleaned recently, dust particles on the filter are breaking off and getting zapped. In which case, you need to clean the filter.

Thanks for choosing FixYa.

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If this is a grid type of item then something has to be touching the grid to complete the zapping circuit. What you have is basically a direct current device that has a positive charge on one grid and a negative charge on the other and only if something touches both grids will it actually zap anything. Merely pressing the button only charges the grids and does not cause arcing of electricity between them. If you want to test it find a dead bug and drop it onto the grid while pressing the button - then shake it sideways so the insect touches both sides and you will see it works.

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The Zapping sound you are referring to is most likely due to arcing of the flyback(high voltage transformer). It is strongly recommended that you do not turn on the tv and have a tech test the flyback and replace it. The FBT generates voltages of about 30000V and should not be handled by someone who has not worked on high voltage electronics before.

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If the "zapping" sound is continuous, then the unit may need cleaning, as it may be clogged with dust & lint.

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