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How to fix convergence failure? - RCA HD52W59 HDTV Projection Television

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Look first to see if the convergence option is still in the customer menu, if not 3 parts around the high voltage transformer for this are available in a kit----also around that transformer on the bottom this set is well known for broken and bad solder connections which cause a lot of problems.

Posted on Nov 02, 2012

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Tried to auto adjust the guns, will not come within range


Hi Tod,

If colors do not align correctly, most likely you have a convergence failure. This requires replacement of the 2 STK ICs and possibly some low ohm resistors.

Some Toshiba have a Horizontal oscillator/Drive IC failure that results in a small or shrunk picture (2-3" border on all sides). The 3 colors do not align properly because of the reduced Hor drive signal. The convergence adjust controls will work but not allow good adjustment. Convergence is ok, Hor Drive signal is incorrect.

Many do-it-yourselfers mistake the Hor Drive problem in Toshiba RPTV with convergence failure. Too much adjustment of the convergence controls may cause the saved data to be really messed up and require more difficult alignment in the service mode.

If minor or simple adjustments in the customer convergence adjust menu do not fix your problem, there is a fault. Stop adjusting until fault is repaired

Convergence failure can be accurately identified with the Convergence Gallery on our website. Service in Toronto, Ottawa, Calgary, Edmonton and other Canada cities.

easyab

Apr 21, 2010 | Toshiba 42H81 42" Rear Projection...

Tip

Convergence Failure Test


CONVERGENCE PROBLEMS

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.

This is a very common failure on these sets and a fairly simple DIY fix.

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 pics of convergence problems.


1d5e2cf.jpg


ff5b9f6.jpg
7deade1.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 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

47a7bc4.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 TvRepairKits.com

Their kits include a step by step instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, etc.

on Apr 18, 2010 | Televison & Video

2 Answers

I have a sony kp 48s and there seems to be a blue shadow on the picture?? i've tried everything in the settings to fix it but it just seems like a manufacture malfunction?


You probably need to get a Sony TV Convergence Kit. More information can be found using the link below.

Convergence Symptoms:
  • Screen Looks Distorted/3D
  • Colors wont align
  • Screen may look distorted
  • No Audio/Video - makes a chirping sound.
You can see some examples and find a fix here...

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

Feb 28, 2010 | Sony Televison & Video

1 Answer

My 57twx20b rear projection tv appears to have 3 images that are not aligned I have been advised it is called convergance failure and the IC's called STK's need to be replaced. What are STK's and how are...


This is a common problem. Its called a convergence failure.

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

Jan 30, 2010 | Hitachi 57TWX20B 57" Rear Projection...

2 Answers

Convergence board is bad


This is a common problem. Its called a convergence failure.

Problem #1) Convergence

Symptoms:

  • Screen Looks 3D
  • Colors wont align
  • Video may look distorted

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

http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Dec 28, 2009 | Akai PTH5498 54" Rear Projection...

2 Answers

Red and blue shadows appeared tonight on screen. Flash Focus and Convergence controls don't fix it.


Yes this is a failure of the convergence ic's it is a common sony big screen failure. I have written an article on how to fix this but it is involved and somewhat complex repair. A repair shop will typically charge around 300 for this repair. Here is my article:


http://www.techlore.com/blog/entry/19694/Sony-Convergence-Repair-My-Sony-TV-has-a-distorted-picture-/

Oct 10, 2009 | Televison & Video

1 Answer

Hitachi dlp - 52" . neon blobs


Hi, the convergence chips on the board are showing signs of failure. simply replacing the board will fix this issue.(convergence board failure)

May 14, 2009 | Hitachi Televison & Video

1 Answer

Convergence problem


The reason you can not adjust it is because there is hardware failure in the convergence board.
Visit this website and ask them for a convergence assembly for your TV. Once you replace that assembly, the convergence might still need to be adjusted manually.
Good Luck.

Apr 13, 2008 | Panasonic PT-56WX51 56" Rear Projection...

2 Answers

Three screens at once!


This is a convergence problem. Go into menu, select setup, select convergence, and run auth converge. If there is no failure in the tv then this will correct the problem. This model does have chronic convergence failures and most times either the convergence power supply must be replaced. Occasionally the problem is the convergence amp pcb and rarely the deflection bd can cause the problem.

Feb 05, 2008 | RCA HD52W56 52" Rear Projection HDTV

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