Question about Sony KP-57HW40 57" Rear Projection Television

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Mitsubishi ws55809 converge controls not working red lines are all bowed at each side

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  • s_eubanks Apr 03, 2008

    How do you replace the convergence ic and were can you purchase them

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Replace both convergence IC's STK392-570 located on
center circuit board on large heatsink.....................T.

Posted on Dec 04, 2007

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Bowed blue and red colors on t.v. akai 42in hdtv 1080i


You probably have a convergence issue. Since you did not include your make/model there's not a lot that we can do to help you. Try searching your model number with the word convergence in the search criteria.

Dec 06, 2009 | Televison & Video

1 Answer

I already change the convergence chips and the red lines still bowed and the problem was not corrected, any clue on what else could be wrong?


First check the 6 resistors on the convergence board 2.2 ohm or .22
red ,red silver gold i think . if they check with in 5% , you got a bad
convergence IC , it happens. remember the chip cost about 8-12.00 etch
so , once in awhile you get a bad chip. and since the bowing red line
is normally corrected by the convergence chips . that makes them
highly suspect. also the convergence set up should allow you to
offset this . If not , swap the chips again.

also check your solder joints ,make sure you don't have any gaps.
or bridges.

If you have any questions just comment and ill respond

Rob

Oct 12, 2009 | Toshiba 57H81 57" Rear Projection...

1 Answer

I have a Hitachi 46F500 tv and the red crt bowed


I just had the convergence replaced and have a great picture

Aug 16, 2009 | Hitachi 46F500 46" Rear Projection...

1 Answer

53 inch rear projection tv bowed piture


THis set is notorus..bad to converge ...here at the shop seting the convergence takes up alot of my time... you may have to get a technician to converge in factory or service model.. this is something a non tech should not due "you can mess it up good" there may be a convergence amplifer board problem too. suggest getting a tech to chech it out. IF you can converge at all is a good sign that it might just be adjustment. average repair for this is 100 to 200

May 25, 2008 | RCA HD52W59 HDTV Projection Television

1 Answer

Red bow on top and bottom of 61dx01b


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 projection sets and a fairly simple DIY fix. All projeciton 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
  • 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 photos of convergence problems.

42d3683.jpg

7859b01.jpg

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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. And you should be able to get the grid straight.

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 fix

69189a5.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 are handy and can follow directions. You can get complete repair kits from TvRepairKits.com or click here. They have put together DIY repair kits that include the OEM parts and step by step photo instructions for each repair. If you are not handy or can't follow directions we would suggest calling a shop.

May 21, 2008 | Samsung PCL5415RB 54" Rear Projection...

1 Answer

Red line on side of screen


there could be a few things if the line is bowed it is a begining of a convergence issue which is fxable by replaing ic in board a tv shop could do that cost is 250.00 . This problem will get a lot worse if it is the convergence. or maybe a tube issue my guess is convergence.


thanks doctor video leadingedgeelectronics since 1987

Apr 29, 2008 | Televison & Video

1 Answer

Red lines, Help??


when you replace the convergence amp board. u usally have to go into setup. or service mode and manualy converge the set. these settings are what perfect focus basis it reconvegence on. sort of the factory settings. these faint lines may also be a red crt overdriving too

Jan 03, 2008 | Samsung HCN5527W 55" Rear Projection...

1 Answer

Convergence problem- right side red out?


As long a the picture is not bowed you may have a convergence module bad or have to enter convergence service menu to adjust If bowed at all the convergence ic's are bad or just a resistor in the convergence circuit is out of its value. These are possibilities but it still could be the ic's

Jan 02, 2008 | Toshiba 40H80 40" Rear Projection...

1 Answer

Bowing in the middle like an hour glass


OUCH!!!! Don't kick me...would be my response if I were your TV
Convergence amps problem.

If it works after a kick I'd say poor solder joints on the convergence amp leads

Dec 17, 2006 | Zenith IQB50M90W 50" Rear Projection...

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