Question about Samsung HC-P4752W 47" Rear Projection HDTV-Ready Television

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Convergence i have a blue line across my screen how do i fix it.do know how to get to the diagram screen where you fix this

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  • Samsung Master
  • 8,617 Answers

If the blue lines runs across the screen in the center its a vertical deflection problem it will need to be diagnosed.

Posted on Oct 02, 2008

3 Suggested Answers

yambo
  • 230 Answers

SOURCE: my projection screen has blue and green lines

Hi, thank you for visiti fix ya.
Your tv need convergence ICs service ( replace).
Can you send me model number tv, please?.
Thank you

Posted on Jul 26, 2009

asnowman
  • 788 Answers

SOURCE: red,green,blue hoizontal lines across upper mid

Your symptom sounds like a damaged convergence IC.

You should be able to get a local service center to repair this at your house for between $350.00 - $450.00, If you want to repair this set yourself, I have some insturctions below that will be a help to you.
While it is not a very hard repair, this repair can be a bit tricky. If you have a 45W soldering iron, solder, solder wick, and heat sink compound you can repair it yourself.

When you remove the old IC's, please be sure to remove all of the old heat sink compound, as it can act as an insulation for the new IC's and cause them to overheat. I usually clean the heat sinks with alcohol and a small rag.

There are two and large IC’s that control the convergence in a big screen set. Some of the newer sets only have one. If you only have one, it is right in the middle of the set on the center circuit board. They are secured to a very large aluminum heat sink. They will have a part number stamped on them that will start with an STKXXX-XXX, like STK392-110, and they are located on the signal board (on the left as you look into the back of the set).

Along with the convergence IC’s there will also be some associated components that will need to be replaced as well. There are some resistors that are part of the convergence circuit that will be open and need to be replaced. Most likely these will appear charred in the center. If you have an Ohm Meter or a DVM, check all the resistors that are close to the IC’s and you should be looking for either ones that have opened or have changed values.

If one of the convergence IC’s are found to be bad, I would replace them both, if one has gone bad the other may go soon. I usually order my parts from Andrews Electronics in California, they will have the OEM components that you will need.
Their site is http://www.andrewselectronics.com/welcome.aspx
And their phone number is a 24-Hour Order Desk: (800) 274-4666
I recommend the phone order so you can talk to the person about the different types of IC’s that are available.

I would also advise that the convergence IC’s be OEM or better, just because they are cheap does not mean that they are a good deal. I have seen the cheap IC’s fail after a short time, even though they look exactly like the OEM IC’s. I think that the bottom line is that you will get what you pay for when it comes to the parts.

You can also try http://www.tvrepairkits.com/ , I have not tried them yet, but they do carry OEM or better parts.

I hope this information allows you to resolve this issue.
If you need further assistance please comment to this post and I will try to help you further.
asnowman

Posted on Oct 17, 2009

  • 8457 Answers

SOURCE: The entire screen will not align with the

This tv 100% have a convergence problems,it dead.The tv convergence board,must require changing 2 STK convergence ICS and some or all it resistors.U have tools like a soldering iron,desoldering pump and solders?Know basic electronic,can u do soldering?Tries website like Tvrepairworld.com,Tvrepairkits.com to buy a convergence kit to do the repair ur self.Or the shop,will cost u $300-350 for parts and labors.

Posted on Sep 06, 2010

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2 Answers

I have some distored blue color across the screen


Projection sets have two very common problems.

The first common problem is convergence


These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection TV sets including Sony, Samsung,JVC,Philip Magnavox,Panasonic,Akai,Pioneer, Hitachi,Mitsubishi,Zenith and others.
You can get more information and a DIY convergenece repair kit with instructions from the link below.

Here are some of the most common problems with these sets...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped
*No Audio/Video - TV Shuts down - May also make a constant chirping sound

Problem #2 - Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

*Dull looking picture
*White looking picture
*Halos around objects
*Red/Orange looking picture

bb0cf99.pngYou can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

May 15, 2010 | Panasonic PT-53TW53 53" Rear Projection...

1 Answer

I have red,blue, and white vertical lines across the whole screen. Convergence shows to be set correctly. Any ideas what may be the problem?


Although the convergence shows being set, it sounds like your convergence is bad. I have a tip at http://www.fixya.com/support/r4220499-change_projection_tv_convergence_ics which explains how to fix your problem and where to get the parts. Let me know if you need more help. Thanks for using FixYa and for the generous rating.

hardrocko

May 08, 2010 | JVC AV-56P575 56" Rear Projection...

1 Answer

Black screen with 3 colored lines going across


Ur tv convergence ICS are dead.U have tools to do soldering,and know how to do soldering?Must replaced 2 STK convergence ICS,and some or all it resistors.Tries websites like Tv repair World.com,Tvrepairkits.com to buy a convergence to repair it ur self.The shop will cost u $300-350 for parts and labors.

Apr 28, 2010 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

I have some distored blue color across the screen


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. 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.

Convergence problems are very common on all Projection TV sets including Sony, Samsung, JVC, Philip Magnavox, Panasonic, Akai, Pioneer, Hitachi, Zenith, and others. You can get a convergenece repair kit from the link below.

Common Symptoms include....
  • 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.
  • TV shuts off after powering on - TV may also make a chirping noise.
Here are some photos of convergence problems.

49abec3.jpg
f0add3d.jpg


Here is a quick test....

Using your original remote go-to the settings menu then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move RED and BLUE in all directions - up, down, left, and right.

If you can't move them in all directions or cant move them far enough your convergence chips are bad and should be replaced. This is a common problem.

Note: If you TV has as flash focus or magic focus button only try pressing the button. If it fails to fix the convergence your need to fix it. See below for a solution

93a1209.pngCONVERGENCE SOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses.
This is a a fairly easy DIY job if you know what you are doing. If you have never done this before we would advise calling a shop or if you want to do it yourself get a complete kit with instructions and support from www.TvRepairKits.com

Mar 27, 2010 | Panasonic PT-53TW53 53" Rear Projection...

1 Answer

The color on screen is not lining up. there are


Ur convergence it dead.U know how to solders?Tries these websites for convergence kit.Tv repair World.com,Tvrepairkits.com.

Dec 12, 2009 | Hitachi 57F500 57" Rear Projection...

1 Answer

KP57WV700 - Blue Lines Across The Screen


Problem #1) Convergence

Symptoms:
  • Screen Looks 3D
  • Colors wont align
  • Video may look distorted
Problem #2 CRT Fluid has clouded over. Symtoms
  • Dull looking video
  • White looking video
  • Halos around objects
  • Red/Orange looking video

You can see some examples and find a fix here...

bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Nov 26, 2009 | Sony KP-57WV700 57" Rear Projection HDTV

1 Answer

My projection screen has blue and green lines across the screen id do not know how to converge the lines akai screen where do i go to fix it


Hi, thank you for visiti fix ya.
Your tv need convergence ICs service ( replace).
Can you send me model number tv, please?.
Thank you

Jul 25, 2009 | Projection Televisions

1 Answer

Red line across top/blue line across bottom of screen


Adjust your convergence. Under menu I think its the last choice at the bottom of settings or picture menu

May 05, 2009 | Sony KDF-50E2000 50" HDTV

1 Answer

Arched blue lines across screen of Sony 63" Rear Projection TV


Had this problem bout 2,3 years ago...it was fixed in about 5 minutes with the help of this article

Tonight I have to do this fix again..the blue lines came back about a week.
http://www.somelifeblog.com/2007/06/sony-projection-tv-red-line-repair.html
I strongly urge you to save the web page locally on your hard drive or print it out and place with the tv manual....

Good Luck..

Jan 05, 2009 | Sony KP-EF61 61" Rear Projection...

1 Answer

Blue lines across screen sony tv


blown fues on the G board, that should fix my problem
and or might need to replace stk392 convergance amp ic's
· http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
· http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Dec 05, 2007 | Sony KP-46WT500 46" Rear Projection...

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