Question about Panasonic PT-51HX40 51" Rear Projection Television

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Picture is getting darker and darker

I've had my TV for 6 years and 2 months and have enjoyed it a great deal. I've just noticed (in the last month) that the picture is dark. I've adjusted the contrast, color and brighnss, with no luck. The tv has not been moved outside of this room. Thank you so much for any ideas. A tv man today told me just buy a new one, there is no way to repair it.

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If the tv has never been service before you could have dust on the 3 tubes,this will decrease the brightness to the screen. try taking the front or back off & see if you can see the top of the picture tubes. remember to unplug the tv & to clean spray the cleaner on the colth , then clean the tup of the tube. never spary on the tube itself. hope this works for you.

Posted on Nov 04, 2006

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Posted on Jan 02, 2017

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the picture getting darker means the lamp has aged and u need to replace it another thing u need ti replace the mirrors in the light tunnel of the light engine they have faded secondly the noise means the colour wheel has aged you need to replace it u will have to replace the whole light engine cos the color wheel comes inbuilt the light engine and u will be ok ontact lg dealer in your area

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JOTVGUY

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there so many things which can cause that to happen an these are thwe following,
i a tube has to be tested
ii a line transformer
iii vedio amplifier
this tests can be done in w/shop where other tvs are of the same.

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The tv has a room light sensor,
shine a bright light at it , does picture get brighter?
other wise when it is cool open the bulb door , is it coated or blackened, Don't touch bulb at all.

and a heavy covering of dust on internal mirrors will cause the same effect.
you will need help to clean it.

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