Question about Philips 42PF7320A 42 in. Plasma HDTV

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Blue spots on pictures

Blue blotches on screen bottom left and bottom middle

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  • dhead2235 Jun 11, 2008

    been doing it for a couple months longer it is on the worst it gets

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There is an adjustment that can be done by an authorized tech, this is not something you can do. it is a voltage adjustment that needs to be done . the panel has now come to full conditioning and needs to have changes to the power that drives it. it gets worse because of the higher voltages that are feeding it.

Posted on Jun 12, 2008

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Posted on Jan 02, 2017

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I have a hitachi 50vs69a with 2 yellow spots in the middle of the t.v when powerd on.....black when off. these spots almost resemble states...there is also blue splotches in the middle of these spots. any...


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Easy to confirm this by covering lens of tubes one at a time with set on and see which removes the blotches.

What happened in a lot of these sets is the set arcs and burns a black dot dead center in one or all three of the screens of the picture tubes used--fatal case and permanent.

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The picture has yellow blotches and blue spots on


Try a Degausser and degause the screen this should do the job.

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Having a big yellow spot background in the middle of the picture.


Hi , it seems you are experimenting a light engine problem.Here's how your tv works: http://www.youtube.com/watch?v=ZLLHnQ4y-wo Basically there's 3 LCD chips that create the colors and image by blending together.When these chips start to melt you will get those blue spots, pixilation even vertical lines.You will need to replace the light engine. Have a blessed one!

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2 Answers

Round black spot in middle of the picture/screen


Hi :-)

The round blotch your seeing on the screen is the melting of an acrylic lens inside the light engine. Its a design flaw which unfortunately Infocus will not stand behind. To fix this problem requires opening the light engine and putting an equivalent lens in place. This task is very involved, but this problem is repairable and you need a glass smith to cut the right size lens from the original.

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1 Answer

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The Optical Block / Light Engine is the problem. Very expensive repair / over $1000

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1 Answer

Blue spots on the screen.


Assuming that an alignment tool is not your problem, if the blue spots are regularly arranged in rows and
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Apr 14, 2009 | Televison & Video

1 Answer

Burn-ins?


It sounds like your light engine is on it way out. I would have this verified by a service center. Very costly to replace. They will probably try a new lamp first.

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2 Answers

Screen appears blue


Try Moving The Speaker You Have There Away From It?
www.Myspace.com/CrossRoadsToNowhere2007

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1 Answer

RCA P60752EBLG1 Convergence Problem


If you wish to get some details; visit the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
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2 Answers

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Hi hope you fine.
is it just a spot or a continous line kind of?
is just a spot check the service kit on the front door (ETB ) alighnment might be touching the prnt drum units.

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