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

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Blinking 4 times - Sony KP 51HW40

The colors red and green on our TV are seperated on screen. Looks 3D and the red light blinks 4 times. Can you help explain what the problem could be? Thanks

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  • SteveShields Feb 04, 2008

    We have the same problem almost. It looks 3D and the picture is concave on the top and bottom. What does it need done?

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Did you get this problem resolved? I think shuttle83 is on the right track. It is either the convergence IC'S or there are some fuses that supply + and - 25vdc to run those IC'S. Keep me posted and then we can go from there. Later... GURU JAY

Posted on Feb 09, 2008

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Hello scramble5,

This might be a convergence amplifier problem or a problem in the convergence coils. I would suggest that you have a qualified TV technician check this TV out. This problem is usually due to the convergence amplifiers malfunctioning, to replace then the two modules and their biasing resistors must be replaced.

I hope this helps
Thank you,
Shuttle83

Posted on Jan 27, 2008

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1 Answer

I have an RCA D40W20 HDtv with the same 3d looking convergence problem. Is mine as easy to do as the Sony KP-51HW40 solution from 2 mnths ago?


All projection TV sets have two very common problems. One is convergence ( 3D/Warped video or dead set) the other is CRT fluid ( Dull Video). Here are more details and solutions for both.

Common Problem #1) Convergence has gone out

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. In some cases the TV will also not show any video. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....


  • Screen looks 3D, wavy, or has a shadow or shadows
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
  • TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.
Here are some pics of convergence problems.


7859b01.jpg

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69189a5.pngSOLUTION

You can get the correct parts, step by step photo instruction guides, and support from www.TvRepairKits.com or click here

Common 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

69189a5.pngSOLUTION

You can get the correct parts, step by step photo instruction guides, and support from www.TvRepairKits.com or click here

Jan 26, 2011 | Sony KP-51HW40 51" Rear Projection...

1 Answer

I have no picture and the power light flashes green and then red.


Hi,
I can help you to solve your Sony tv problem.
Is it Sony KP-51HW40 tv or any other model?
How many times red light start blinking after three seconds long pause?
Let me know to proceed, can you check voltages with multimeter in tv circuit board?
Thanks.

Nov 26, 2010 | Sony KP-51HW40 51" Rear Projection...

2 Answers

My Sony KP-46WT500 screen shows the tv image in blue only for a few seconds, then it goes completely blank (as if it were off). Do I need to replace the bulbs?


It is rear projection TV that use 3 picture tubes of red-green-blue to show color picture on tv front screen.
Do you see standby red light blinking when TV shuts off after showing blue image for a while?
If red standby light is blinking, please count it how many times it blinks, there would be 3 seconds pause between blinks so count pause to pause and post it here to find out possible solution.
Thanks.


Dec 22, 2009 | Sony KP-46WT500 46" Rear Projection...

1 Answer

My picture is green the it shuts off with light blinking in front


that's very hard to fix, you need to monitor every test voltage pin if is in normal. try also replace crystal capacitor thats one monitor with the jungle IC. 

Apr 30, 2009 | Sony KP-57WV600 57" Rear Projection...

1 Answer

Text/images overlap each other in 3 colors, 3D distorted picture


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
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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


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 email and they will put one together for you. Their kits includes photo instruction guides, original Sanyo STK chips, convergence resistors, pico fuses, etc.

Jan 28, 2009 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Fix my line problem but red LED flashes five times


Hi Guys, Looks like your advise took care of the problem. I adjusted the power knobs for each of the RGB guns on my Sony 51 inch projection TV. The color looks great and I don't seem to have the blinking indicator light bugging me any more. I will be sure to suggest you folks to anyone with these type of technical questions.

GREAT JOB!!

Jan 27, 2009 | Sony KP-51HW40 51" Rear Projection...

2 Answers

Green screen and shut down


TV screen flashes with Red lights for few times. sometime it shut down TV or red color is lost showing pictures without Red looks terrible. Any solution

Sep 17, 2008 | Sony KP-51HW40 51" Rear Projection...

4 Answers

Green flashes then tv turns off


or a new lamp. you could first replace the lamp.
the screen might work fine for a couple of seconds, but then it fades away or deteriorates. This means the lamp is going bad.

Aug 23, 2008 | Sony KP-51HW40 51" Rear Projection...

2 Answers

SONY KP-61HS30


Sounds like it needs convergence chips. This repair requires test equip. and soldering/desoldering tools. Most repair shops charge between 200.00 and 400.00 to do this repair on your model of tv. Hope I have been some help

Mar 03, 2008 | Sony KP-61HS30 TV

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