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

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Sony KP-51HW40 51" Rear Projection Television how to fix the blue screen?

Posted by Anonymous on

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D&L Services

  • 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

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Anonymous

SOURCE: Sony KP-61HS10 61 in. Rear Projection Television

my tv has the same problem but it blinks five time with no picture but good sound

Posted on Aug 01, 2008

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welcomejee

Shahid Electronics

  • 10594 Answers

SOURCE: Sony KP-57WS500 57" Rear Projection Television

When your tv shuts down after too much blue screen, how does its standby light flashes?
There would pause in flashes of this light, so count it and let me know to help you out.

Posted on Oct 28, 2008

shaun taylor

  • 1527 Answers

SOURCE: kp-65wv700 7 blinks

hello High voltage shutdown. The high voltage has exceeded 33k and the unit goes immediately into safety shutdown. Check power supply regulation and horizontal circuits.

shaun

Posted on Nov 11, 2009

Chi Chu

  • 8457 Answers

SOURCE: BLUE SCREEN My sony KP 46wt500 hdtv ready rear projection has

Ur tv have a problem known as convergence problems.Ur tv convergence board must have it 2 STK convergence ICS and some or all it resistors to be replaced to solved convergencce problems.The shop will cost u $300-350 for parts and labors.

Posted on Jun 06, 2010

Testimonial: "Thank you at least now I know the problem can this be done yourself? or would it be better to leave it to a professional?"

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1 Answer

Screen turns blue on my sony KP-51WS500


Common issue on this set--locate the master screen / focus block and lower the BLUE screen control until the blue cast is gone, only a slight adjustment will be needed.

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Sony KP-57WS500 57" Rear Projection Television


If you follow the info from this website, you will be able to fix your TV.
Use at your own risk. Please be very careful when working around devices that generate high voltage is excess of 32.5Kv.

Oct 28, 2008 | Sony KP-57WS500 57" Rear Projection...

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Blue Picture Tube , bad Video IC on Blue CRT board.Or Blue screen drive control to tube needs to be adjusted down some.

Most Likely Bad Tube!

Jul 12, 2010 | Sony KP-57HW40 57" Rear Projection...

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Ur tv have a problem known as convergence problems.Ur tv convergence board must have it 2 STK convergence ICS and some or all it resistors to be replaced to solved convergencce problems.The shop will cost u $300-350 for parts and labors.

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u have bad blue picture tube , $300 - $500

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hello High voltage shutdown. The high voltage has exceeded 33k and the unit goes immediately into safety shutdown. Check power supply regulation and horizontal circuits.

shaun

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1 Answer

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I have Model # KP-WS500. The screen turn blue.

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Blue screen flashes and the tv shuts off


You will need a service manual you can get one here it could be the tube, video or numerous things. Your service manual is available at the following link. Plus online support
http://servicemanuals.vstore.ca/

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