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

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TV turnng off now, convergence chips replaced

I just replace both convergenve chips in my Sony rear projection. It was working great for a while.

Now it is turning off on its own.

not sure what the problem is.


Thought that it might be there was not enough heat sink on the chips, but i put plenty on them.

Any advice?

Posted by on

  • dd8380 Mar 01, 2008

    Ok, more problems. I got home last night to try the additional advice given to find that the TV will not even turn on now. Any ideas?

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  • 41 Answers

Try a good vacuuming of ALL components. Also make sure all the cooling fans are running

Posted on Feb 29, 2008

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1 Answer

I'm getting a curved(fisheye) picture with the three colors not lining up.


Hi,
This kind of picture appears due to failure of convergence output section in rear projection tv, please check convergence output chips and replace them (tv has two chips of same number)
Let me know if you have additional question.
Thanks.

Feb 03, 2011 | Sony KP-51WS500 51" Rear Projection...

1 Answer

Have a sony 46 inch rear projection model #kp 46wt510! Purchased it new in 2004! Have nothing but great things to say about picture untill today! I have a color seperation with red, whatever line or...


Hi,
This is problem of convergence output chips failure and it is fixable.
Replacement of convergence output chips on D board will solve tv problem, local tv repairman will do this job because convergence output chips replacement requires soldering work on circuit board.
Thanks.

Jan 01, 2011 | Sony KP-46WT510 46" Rear Projection HDTV

1 Answer

Lines around picture and words out of shape


Hi,
It sounds convergence output chip failure problem.
Replace convergence output chips on D Board of tv to fix the picture issue. If you have no experience of working in tv circuit boards then ask local tech to help you out.
Thanks.

Jun 06, 2010 | Sony KP-51WS500 51" Rear Projection...

1 Answer

Our Sony Projection TV has the red color distorted


Double picture symptom shows tv got problem with convergence out section and most probably convergence out chips would be replace to fix this issue.
Though its job of qualified tv tech to replace convergence out chips yet I can provide you helpful info if you are handy with electronics stuff repair and can replace parts in circuit board as soldering work is needed with proper tools to repair tv.
Thanks.

Mar 14, 2010 | Sony KP-51WS510 51" Rear Projection...

2 Answers

Sony kp-57ws510 SD Tech, soldering is no


I've used them before for replacement STK IC convergence chips. Works great! Good luck!

Nov 02, 2009 | Sony KP-57WS510 57" Rear Projection HDTV

1 Answer

Blue convergence is off right will not adjust


Hi. there is a malfunction that has occurred within the convergence chip that is located on the PC board(demod). this is a Hybrid chip that controls the calibrations of the RGB streams. If this chip becomes unstable, it will not allow proper calibrations.

Replacing this failed chip will fix this issue.

The actual sony chip is not available at this time but, there is a compatible chip that will work with your set. i will post a link to the affected part below.

CLICK HERE FOR YOUR REPLACEMENT CHIPS

May 11, 2009 | Sony KP-53V75 53" Rear Projection...

1 Answer

Blue haze on the lower part of rear Projection TV


Your TV most likely has one or more possible problems.

Problem #1: Convergence Chip 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.
701cb04.jpg
77ea520.jpg
f0900cb.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.

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.


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

2c07611.pngSolution #2


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.

Mar 23, 2009 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

The blu display on my sony 65" tv is arched, making the convergence adjustment in-effective.


its failure of Convergence Out IC chip and requires replacement.
TV has 2 IC chip in convergence circuit and I would recommend to replace both at same time.
Let me know exact model of Sony 65" TV to provide you more technical info.

Mar 14, 2009 | Sony KP-51WS510 51" Rear Projection...

2 Answers

Sony TV rear proj works but color is blue


Problem : Convergence Chip 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.
701cb04.jpg
77ea520.jpg
f0900cb.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 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.

I hope this will solve your issue.

Good Luck.

If my solution proves useful please accept it.

Regards
Arjun

Mar 13, 2009 | Sony KP-51WS500 51" Rear Projection...

7 Answers

The red convergence is off


replace the convergence ICs post your model and I will post a link where you can get the parts and they include step by step instructions with pictures so you can do the repair yourself takes an hour and will save you about a 400 dollar repair bill.

Mar 30, 2008 | Sony KP-46WT510 46" Rear Projection HDTV

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