Question about Sony KP-43T90 43" Rear Projection Television

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My sony kp-43t90 is blury

The picture is showing a shadow and is more than 1 color

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  • Sony Master
  • 14,553 Answers

Convergence problem and because of age of set may not be worth shop repair-----Tvrepairparts.com sells kits based on model number for this.
my sony kp-43t90 is blury - 11_5_2012_4_04_17_pm.jpg

Posted on Nov 05, 2012

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Posted on Jan 02, 2017

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  • 3 Answers

SOURCE: No power no lights good fuse...

Try a different power outlet? Possible shut down of DC supply due to short circuit can be heard if listen close at back of TV on plug in or power up with remote for a quick squeel then ticking sound or tick tick tick and nothing.

Posted on May 24, 2008

doin12volt
  • 233 Answers

SOURCE: Sony KP 57WV600 Picture with Shadows flash focus not working

Your TV has gone crazy on you because your convergence IC's have gone bad.   These IC's operate at a very high temp, and usually only last 4-5 years.  
If you remove the back of the set, you will want to look for the BIGGEST heatsink in there, on that heatsink, you will see 2 lage IC's , probably STK392-110, or STK392-120's or something close...regardless - you can go on ebay to order the new ones, but MAKE SURE they are Genuine SANYO IC's and not counterfiet cheapies. the cheap ones may only last 2 months.. 
You will also need some "Heat transfer paste" - you can pick this up at radio shack.   Once you remove the old IC's, test all the large resistors near them.. pull one side of the resistor out of the board so you can check it out of circuit. they will usually have the value in Ohms, printed directly on the resistor, but you may have to use the resistor color code to find out what value they are....However, usually if there is any damage, the resistor will look like it has been HOT or fried. replace the IC's and any bad resistors, and you should be good to go. If you need to order a resistor or two, 
http://servicemanuals.vstore.ca/index.php/cName/convergence-resistors   If after replacing the IC's and any defective resistors, the convergence is still bad, make sure to use a multimeter to check ALL fuses on the boards, --- sometimes when the IC's go, they will take out a fuse to the convergence power supply. If you find any bad fuses, replace them accordingly!   If this STILL doesnt make it look right, you will need to find out how to get into service mode and do a coarse convergence adjustment. This information can be found in the Service manual for your set. If you dont have one you can download it at manualuniverse.com
Hope that helps!

Posted on Jan 17, 2009

Ecollier2012
  • 3459 Answers

SOURCE: Sony KP-51WS500 Rear Projection TV colors are distorted.

Here are some of the most common symptoms and example photos of a convergence problem

  • 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.
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Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.



You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.

Posted on Mar 13, 2009

  • 2 Answers

SOURCE: sony KP-43T75 color repair

I've had a convergence issue with my KP-43T75 and recently the TV made a "pop" noise and the picture+sound went out. The standby light repeatedly blinks twice over and over. Holding power button on startup causes a long blink, then the double blinks start and repeat.

I understandthat replacing the entire G Board (A-1316-471-A) will replace both problems but I can't find the part in stock, though I've seen it listed for $200. Any leads?

Posted on Aug 31, 2009

Slinteriors
  • 8617 Answers

SOURCE: tv not coming on blinks 4 times

Vertical deflection problem. IC1509 ( vertical Output ) or Q1505 ( Vertical Buffer) needs replacement.

Posted on Nov 28, 2009

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1 Answer

Picture is blurry and i see green and pink shadows


you need a light engine. please contact Sony and see if your still under the recall for that model.

Jul 02, 2010 | Sony KP-43T90 43" Rear Projection...

1 Answer

My Sony KP-51HW40 shows a redish shadow behind the objects in the picture. Is this fixable? thank you ! John


These sets have several common problems listed below.

Problem #1) Convergence

Symptoms:


  • Screen Looks Distorted/3D
  • Colors wont align
  • Screen may look distorted
  • No Audio/Video - makes a chirping sound.
Problem #2 CRT Fluid has clouded over. Symtoms

  • Dull looking screen
  • White looking sceen
  • Halos around objects
  • Red/Orange looking

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

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

Mar 07, 2010 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Television is out of whack


Convergence chips are bad. Goto www.TvRepairKits.com to get a repair kit

Jan 20, 2009 | Sony KP-43T90 43" Rear Projection...

1 Answer

Sony KP-51WS500


the tv needs to have a convergence done on it to realign the picture..the colors have to be set a certain way or it will show shadows and it will only get worse

Jul 11, 2008 | Sony KP-51WS500 51" Rear Projection...

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The issue is most likely a bad bulb. If the light that you are getting is flashing red than most likely it is a bad lamp. If this is the case you are looking at probably $200-350 dollars.

May 10, 2008 | Sony KP-43T90 43" Rear Projection...

1 Answer

Color distortion


There are failures occuring in the scann and convergence circuits. This may not be feasible to service.

Jerry G.

Dec 14, 2007 | Sony KP-43T90 43" Rear Projection...

2 Answers

Sony KP-43T90 no picture high voltage seems to work


The convergence board or one of the deflection yokes has some failures. This may be a little expensive to service.

Jerry G.

Nov 08, 2007 | Sony KP-43T90 43" Rear Projection...

2 Answers

Blurry on one side of screen. Green and purple shadows


Convergence IC's should be replaced before any alignment is
attempted ....part # STK392-560....You need two......mount
to large heatsink...............T.

Oct 31, 2007 | Sony KP-46WT510 46" Rear Projection HDTV

1 Answer

Which ic's replacement


i dont see them on this pic

i just looked at the schmatics and they are stk392-150. they are located on the G board ic1502 and ic1506

Apr 02, 2007 | Sony KP-43T90 43" Rear Projection...

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