Question about Panasonic 50 in. Plasma TV

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Panasonic 50 inch plasma

Recently purchased a 50 inch panasonic viera TV which has developed 2 faults.

1.Makes and intermittent clicking noise very annoying during quite parts of a film.

2.When strobe effects come on TV electrical hissing crackling and clicking comes quite loudly from the back of the TV.

Any ideas?

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  • Anonymous Nov 15, 2008

    Just noticed the same thing tonight on my 42pz800a... watching a music video clip which had a lot of flashing, strobing effects from black to white... a crackling, clicking sound from the back of the TV. I've had this TV for months and never noticed any sound like this. Now, it seems there is a buzzing sound the brighter the picture.




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  • Panasonic Master
  • 1,646 Answers

You should call for warranty service. If the set is very new try to get it exchanged.

There are some very heavy duty power supplies and many high power matrix drivers used in Plasma sets.

The description sounds like the noises are very loud. It is normal with any of these TV sets, if you put your ear right up to the back of the set at the vent holes you will hear some noises. These would be some acoustic harmonics from the power supplies and related circuits.

I am wondering if it is possible that there is something that is becoming less stable. If the set is working very well without any failure, so-far this is a very good sign. Before it gets to be a problem, I would have this checked.

On many models of these sets, they use fans for cooling specific areas. A bad fan can cause noise.


Jerry G.



Posted on Apr 14, 2008

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Posted on Jan 02, 2017

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