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

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Panasonic PT-51HX40 Rear Projection TV - Dark picture. I have a Panasonic PT-51HX40 TV and the screen has progressively gotten darker over time. I have set the brightness to maximum and tried adjusting the color with no success. I also cleaned the three tube tops. I considered the fix documented for the Panasonic PT-51G44 (replacing the C581 capacitor), but this "D" board has a different layout.

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  • johnsonta Sep 30, 2009

    This model doean't use a lamp, it has 3 crt's.

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Did you checked replacing the convergence ic.its also called the STK ic.its located on convergence board.the number of ic is STK 392 110 .check out.there will be two such ic on the convergence board and both needs to be replaced.this both ic controls the picture.and the cost of per ic is near to $15 you can get replacement ic from -------- www.radioshack.com ------ or ------ www.shopjimmy.com -------- -------------------- this will help.thanks.please do rate the solution.thank you for using fixya.keep updated.

Posted on Sep 30, 2009

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If getting darker your lens/lamp is going bad and is in need of replacing.

Posted on Sep 29, 2009

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1 Answer

Picture shaking and skipping


not much information here, first look to see if same issue when using rear video/audio inputs. Then try to describe what it looks like or TAKE A PHOTO AND POST IT HERE.

Dec 15, 2012 | Panasonic PT-51HX40 51" Rear Projection...

1 Answer

Tv is to dark contrast it all the way up but its still to dark


trying putting the brightness higher, if it's a rear projection maybe the sunlight coming through the window maybe decreasing the light in the tv.

Sep 14, 2009 | Panasonic PT-51HX40 51" Rear Projection...

1 Answer

Red tinted double image above the normal image.


hello consumer MG,
you need to change your STK392-110. Replacing those 2 chip will fix your set.
c7f2e81.jpg
best regards
circuitcity
www.interactiverepair.com

Jun 08, 2008 | Panasonic PT-51HX40 51" Rear Projection...

1 Answer

No picture


Maybe need resolder the high voltage board

Apr 10, 2008 | Panasonic PT-51HX40 51" Rear Projection...

1 Answer

Help- picture


yes,this can be fixed for $ 280.00 - $350.00 depends on your area,you need to replace STK-392-110s both stks then do complete realinement of convergence. set fixed!!!!

Oct 17, 2007 | Panasonic PT-51HX40 51" Rear Projection...

1 Answer

Picture is getting darker and darker


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.

Oct 22, 2006 | Panasonic PT-51HX40 51" Rear Projection...

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