Question about Sony KP-51HW40 51" Rear Projection Television

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I have a Sony Rear Projection Television and its out of focus what should I do?

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  • Sony Master
  • 8,457 Answers

Ur tv have a problems know as a Convergence problems,it dead.The tv convergence board reqiure 2 STK convergence ICS and some or all it resistors to be replaced to solved the convergence board problems.The shop will cost u $300-350 for parts and labors.

Posted on Jul 05, 2010

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Posted on Jan 02, 2017

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  • 51 Answers

SOURCE: Sony KP-57WS500 57 in. Rear Projection Television

Hi Guys

Your problem here has to do with the amount of aging that happens to the three colour tubes - red, green and blue.

Blue actually ages slower than red and green. What actually happens is the green tube deteriorates and due to green being the predominant colour for brightness causes the blue tube`s flyback lines to appear - especially when switching between inputs or when the video is blanked.

No replacing the blue tube will not solve your problem as the tube is actually the best one of the three.

As someone mentioned there is a way to adjust this by removing the speaker grill assembly in front of the set. Doing the service mode adjustment with the remote is not the right way to solve the problem - you would be adjusting the colour gain and off-set values and would seriously be compromising the white balance of the set.

On the left hand side behind the speaker cover you will see a black square block with six adjustment points. Look for the one marked SCR BLUE, Switch the set to a unused input so the blue lines become visible. Now adjust the BLUE point counter clockwise until the lines disappear. A small adjustment should do it, Switch back to a picture and make sure the whites are still white.

This should sort your problem. I would however suggest asking a Sony service centre to do this for you. This is a dangerous thing to do as you will be working close to the 35Kv supply the the anodes of the three tubes.

I hope this answers your question.

Goo luck.

Posted on Mar 08, 2008

  • 4234 Answers

SOURCE: Hitachi 43VWX10B Rear Projection Television - color adjustment problem

Either the pins on the convergence ICs need to be resoldered or the ICs need to be replaced. These are large black ICs attached to a heat sink and should be marked STKxxx. Resolder first. If that does not resolve it, replace the ICs.
Dan

Posted on Mar 17, 2008

SOURCE: LG Rear Projection Television Model RT-56NZ23RB - Fault

For my LG TV - LG RT-56NZ23RB, I replaced two STK 392-120 chips and it has fixed convergence problem now.

Posted on Jun 09, 2008

welcomejee
  • 10594 Answers

SOURCE: Sony KP-57WS520 57 in. Rear Projection TV standby light blinks

Hello,
Please mention how many times standby light blinks on your KP-57WS520
There would be bit long pause between blinks so count the blinks and let me know to help you.

Posted on Dec 05, 2008

welcomejee
  • 10594 Answers

SOURCE: Sony rear projection power led flash ten times

Thats great that you are electronic technician and can understand and rectify problem easily with help of service manual.
Please have related service manual from Manual Zone with little fee.
Service manual has all technical details, schematics and troubleshooting for this TV.
Good luck.

Posted on Dec 15, 2008

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1 Answer

Out of focus, double blurred image with pinks & greens


Out of focus, double blurred Problem with the Sony KP-51WS500 51 in. Rear Projection Television

Apr 21, 2011 | Sony KP-51WS500 51" Rear Projection...

1 Answer

Where is the magic focus button?


Most Sony Rear Projection TV have a small door under the screen with some manual controls. Push on spring loaded door to open. Magic Focus is near the bottom and labeled.

If Magic Focus does not restore for correct operation, check the Convergence Gallery to confirm if you have a convergence fault that needs repair. #8 is the Sony menu.

easyab@hotmail.com

Feb 11, 2011 | Sony KP-57WS500 57" Rear Projection...

1 Answer

Sony rear projection tv will no longer focus. tried flash focus & manual focus


Convergence issue. The sony type 1 convergence kit from www.tvrepairworld.com should repair that issue. The kit contains the parts and CD with instructions.

Dec 31, 2009 | Sony KP-57WS500 57" Rear Projection...

1 Answer

Thin red arched lines, when screen is dark.


common problem with sony, focus and picture level need to be adjusted, should be done by a tech. (high voltage) in focus block.

Nov 24, 2009 | Sony KP-57WS500 57" Rear Projection...

1 Answer

Picture is distorted, double vision, looks like 3d.lines are arched or curve. colors don't line up. screen is bowed or warped. its a sony kp- 57ws600, 57 in. rear projection television. can you help me...


Try going into the video section of your menu, and pressing RESET on your remote control. If this doesn't fix it, try your quick start guide for setting the convergence and focus.

May 17, 2009 | Sony KP-57WV600 57" Rear Projection...

1 Answer

Picture goes out of focus


besides using a bigger hammer you need to adjust the focus controls under the speaker cover from the front

Feb 25, 2009 | Sony KP-57WS500 57" Rear Projection...

1 Answer

Flash Focus does not focus the TV colors are seperated


if that doesn't work it will need new convergence IC's put in as well as a resistor or two

electech

Oct 29, 2008 | Sony KP-43T90 43" Rear Projection...

1 Answer

Blurry picture


1)Remove rear cover = clean RGB lens with soft cloth
2)Remove front speaker grill cover and access panel
Locate screen / focus block = adjust RGB focus controls
3)Last,if needed, unlock each focus lens cap = adjust then lock
................................................T.

Dec 01, 2007 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Sony KP-51HW40 51 in. Rear Projection


If Flash Focus doesn't work,  change out convergence
IC's first ( STK392-560 X 2 ), then activate Flash Focus.
Can you please describe what you are seeing as a problem?
Then I will help with whatever you need.......T.

Nov 01, 2007 | Sony KP-51HW40 51" Rear Projection...

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