Question about Panasonic PT-53TW53 53" Rear Projection HDTV-Ready Television

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Seeing triple red,blue,green

Changed the IC Stk now see 3 images, three colors,How do i get it to 1 image. Thanks for any help

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You might also have defected stk chips/ic

Posted on Feb 08, 2009

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You have proble with the convergences ICs if the tree colors are at fault then also check your power supply voltages the polarization resistors

Posted on Feb 08, 2009

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I have a 63' projection TV. The picture is off. All of the lights are working, but the images are fuzzy, and you see the image tripled. The three images overlap each other in red, green, then blue. ...


Please do us a favor and rate this solution after reading.

Projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Here are more details and solutions for both. Repair kits with instructions are also avail from www.TvRepairKits.com

Common Problem #1) Convergence has gone out

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....


  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
  • TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.
Here are some pics of convergence problems.


7859b01.jpg

e87380c.jpg
69189a5.pngSOLUTION #1

For more more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Common Problem #2) CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

578ba6c.jpg
TV set after fluid change

65af323.jpg

69189a5.pngSOLUTION

You can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Please do us a favor and rate this solution after reading

May 09, 2011 | Philips 55PP9363 55" Rear Projection...

1 Answer

My Sony rear projection TV has three images that seems to be out of alignment. There is a blue image, A green image and a red image. What has happened and can it be fixed? Thank You, Art


It can be fixed, if picture is 3d looking it is what is called a convergence problem.

See attached photos of typical ones. This set uses two of the STK-392-560 convergence IC chips.

It can be a do it yourself repair but this does require being able to solder.

Parts cost would on EBAY be under 25 dollars.

Let me know if you want instructions, I have photos of the parts and the board they are on.

see attached photos.

SD TECHsd_tech_11.jpg





sd_tech_12.jpg


THE CHIPS WILL LOOK LIKE THIS BUT HAVE STK-392-560 PRINTED ON THE FRONT IN WHITE.

Nov 30, 2010 | Sony KP-51HW40 51" Rear Projection...

2 Answers

65" rear pro. Convergence IC Repair


This is a common problem. Its called a convergence failure.

Problem #1) Convergence

Symptoms:

  • Screen Looks 3D
  • Colors wont align
  • Video may look distorted
Problem #2 CRT Fluid has clouded over. Symtoms
  • Dull looking video
  • White looking video
  • Halos around objects
  • Red/Orange looking video

You can see some examples and find a fix here...

bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Feb 18, 2010 | Mitsubishi WS-65809 65" Rear Projection...

1 Answer

Red color convergence issue; Red lines are curved


This sounds like convergence output IC problem. convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors. Shops usually $200-$400 Be sure to vote/rate me if this helped Thanks!
See link for more detail
http://www.ehow.com/how_4575598_yourself-projection-tv-repair-convergence.html

Nov 24, 2009 | Televison & Video

1 Answer

I have the mitsubishi 55711,i have a double image


This is a V-21 Chassis common, with these symptoms, for failure of the convergence amps. This set uses two STK 392-110 Sanyo amps mounted on a heat sink and hard to miss. They're a 40 pin ic about the size of a half pack of cigarettes.
It has also been my experience that two or more of the yoke return resistors need to be replaced, most commonly R8c21 and R8c22, both are 3.9 ohm 1w but test all of them for reliability.
Hope this helps!
Bill

William Rayburn, CET
Premium Technologies
PO Box 442
Long Beach, WA. 98631
360-642-4993
premtech@willapabay.org

May 14, 2009 | Mitsubishi WS-55711 55" Rear Projection...

1 Answer

Tripe image, blue, red and green color on image, not focus


you will need to replace the two STK392-560 ICs and also check the 4.7 ohm 1/2 watt resistors and the six 3.5 amp pico fuses.

May 05, 2009 | Sony KP-57WS510 57" Rear Projection HDTV

2 Answers

Picture shows only about a 2-3" blue,green,or red vertical line down the middle


If your seeing vertical line across the screen you need to check the components in the vertical stage as well as the vertical IC could be bad, or the yoke could open.
Also check if any voltage reaching the vertical stage.

Good luck.

Was this help full.

Oct 31, 2007 | Panasonic PT-47WX53 47" Rear Projection...

1 Answer

Red lamp issue


the color which you see has problem i think you might be seeing white slanting lines also with this. it mainly due to 1 supply to green video supply 2 loose cuntact in g.video section 3 green tr. defective 4 ckt from ic to green input is defective 5 chroma ic defective if supply is ok. regards

Sep 14, 2007 | Pioneer SD-533HD5 53" Rear Projection HDTV

1 Answer

The image is gone and is now only three lines green red and blue. How to fix it?


Hi, Your problem is what you call vertical defflection circuit section, it is very rare that you would see the three line in the midle of the screen because they have protection narmaly to shut down the set's.
How to fix this, well you must locate the vertical ship, to see what it is, it narmaly say's on it LA7830 or LA7833 or LA7838 and Bla Bla Bla look for LAxxxx , ( a small ic flat standing upward, about 11/2" and 3/4" in hight and about 1/8" in thinkness) if it look's burt when you know what to do, I would also check to see if other parts that supply's the voltage to this ic's is burt, narmaly 12 to 30 volt dc., It may be also be located on a seperat board with the convergence, these or two big ic's starting with the part # STK, not to shure on you unit, don't have the schematic, but may be a board with lot's of Transistors , narmaly now these day's no one repair board, they just replace them, this is why it cost so mutch to fix.

I hope this help's

What About Bob
Bob
Timmins, Ontario

Apr 09, 2007 | RCA P46921 46" Rear Projection Television

6 Answers

Blue Halo, Tried to adjust on Projection TV


The convergence issue you have will not adjust out....repair
of the convergence circuit will be necessary....then adjust...T.

Dec 01, 2006 | GE 46GW947 46" Rear Projection Television

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