Question about Sony KP-46WT510 46" Rear Projection HDTV

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Green Out Of Focus

Hi, My Samsung SP-48T5HP Projection Television has suddenly became out of focus,giving a curve in the top of the screen and showing a double picture,it seems that lost the conberge with the green focus. Any Idea what I'm against. Please email me at Marilyn.Estrada@xtra.co.nz with a possible direction. Thanks Before Hand the green light is all bent and out of focus. i see a double picture.

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  • Sony Master
  • 3,459 Answers

Your TV most likely a convergence failure. ( common problem )

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.
Here are some photos of convergence problems.

Green Out Of Focus - 3dc9420.jpg
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0dcec37.jpg
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.

SOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses. Its a fairly easy DIY job or you can call in a pro. If you want to do the repair yourself check the site www.TvRepairKits.com. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, etc.

Posted on Jun 19, 2009

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Posted on Jan 02, 2017

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1 Answer

Image is out of focus and pulsating green lines around some image


yes it is repairable will not be cheap.a tech will have to do the convergence inside the tv,the remote only does so much.i have had 3 in the past and when they get older they become dull,i would not by rear projection any more years going back that was the only choose you had for a big screen ,now lcd and plasma have come down in price i would be looking at that if i was you.

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I have seen two different things cause this. The first and most common is the electrical failure of one or both convergence IC's. A handful of times, the data in the DCU became corrupted and I was able to enter the service mode, go to manual convergence and correct the one location that was off.

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Your convergence board is going out. this will have to be replaced. i would take a look at the main logic board as well. it could have minor point breakage.

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I have a blurry screen and the top of it the picture is curved a bit. I was told to adjust the focus knob but I don't know where that is in the back of the TV. I took off the back and couldn't find it. I also tried to adjust the manual convergence and the red would not adjust only the blue would align. Any suggestions.

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Good Day;
Suspect Convergence IC's STK4274, part Number 2003191. Replace all three IK04(red), IK05(green), IK06(blue).
Good Luck, big IRISH.

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Replace both STK392-110 convergence IC's with Toshiba or
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There is a Convergance board that needs to be replaced.there is no way of fixing that problem without replacing that board first

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It needs to most likely be re-initilized in a technician service menu. If the convergence looks fine otherwise this is most likely the cause.

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