Question about Toshiba 43H71 43" Rear Projection Television

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Convergence board I'm not having any luck fixing the convergence amps. I have sound no pic. I'm thinking of replaceing the convergence board. Do you know were I can buy one. Thanks

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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. 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, Zenith, and others. You can get a convergenece repair kit wiith instructions from the links below.

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

Problem #1) Convergence

Yours may have one or more of the following symptoms

  • Screen Looks 3-D
  • Colors wont align
  • Screen may look distorted or warped
  • No Audio/Video - makes a chirping sound.
Problem #2

Another common problem is dull or washed out video.
Your TV may have one or more of the following symptoms....
  • Dull looking picture
  • White looking picture
  • Halos around objects
  • Red/Orange looking picture

You can see some more examples and find a fix here
Convergence board - bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Posted on Apr 03, 2010

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Posted on Jan 02, 2017

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2 Answers

Picture not in focus


Devices: All projection TV's (HD or analog), especially Samsung

If its a Samsung HCN653W (or similar model), the first thing to try is the menu option named "Magic Focus", which tunes the set's focus.

Otherwise, it sounds like a job for a convergence. Perform a convergence procedure on your TV, and if the problem recurs within a few days/weeks, then your TV's 'convergence amplifier' board (aka "convergence amp board") is starting to fail.
This board may fail completely, in which case, your convergence procedure will fail to improve the picture.
A "convergence procedure" can be performed entirely by just using the appropriate setup menu option and your remote control.
This board may partially fail, in which case your convergence procedure will properly converge the Red, Blue, Green colors on just part of the screen, whereas a properly functioning convergence amp board will allow complete convergence of the colors across the entire screen.
Your TV's convergence procedure instructions will be found in your TV's Owners Manual.
At least one Projection TV manufacturer recommends that the consumer perform a convergence procedure every 30 days, but most TV owners find that excessive, and might only do one when (a) there's an evident color convergence problem in any part of the picture, or (b) once every 3-6 months.

How-to video: www.youtube.com/watch?v=esk4nYZKFcg
how-to instructions: www.ehow.com/how_2034880_perform-convergence--tv.html


cost to you: $zero
.

If the convergence amp board is bad, cost for a service call would be $300 (USD) plus $100 for a new board plus 50% markup on parts = about $450 (USD)
Cost to order a new board online: about $100 (USD) + shipping + sales tax.
Alternatively, if you can solder/desolder STK's (Power Amplifier Integrated Circuits), one can repair a convergence amp board for as little as $30 (USD) or so.

Dec 04, 2011 | Sony Televison & Video

1 Answer

I cant line the red and green crosses up left and right but i can move them up and down. I have two pics in diferent colors


The tv have a convergence problems,it is dead.Tv have colors lines like R,G,B mis alignments,have colors pictures shadows or 3D pictures look alike?Yes,than the tv convergence board it is dead.The tv convergence board must require replacing 2 STK convergence ICS and some or all of it resistors too.To fixed the tv convergence board to solved the tv convergence picture problems.The shop will cost u like $300-350 for parts and labors.

May 09, 2011 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

Color distortion, hazy snowy screen with thin red lines, suddenly happened had perfect pic 24 hours ago


Tv have a problems known as a convergence problems,it dead.Tv have colors lines R,G,B mis alignments,have colors shadows pictures or 3D pictures look alike?The tv convergence board is dead.The tv convergence board require replacing 2 STK convergence ICS and some or all of it resistors too.To fixed the tv convergence board to solved the tv convergence picture problems.The shop,will cost u like $300-350 for parts and labors.

Feb 01, 2011 | Mitsubishi VS-50705 50" Rear Projection...

1 Answer

Our picure appears to look like watching a 3d movie with no glasses it appears to be th e red convergence if you do the auto convergence it sometimes fixes it for lil while and goes bk to same problem...


The syptoms you describe point to a bad convergence amplifer board. The crosshairs not moving on red is indication of this. However i must point out this set divides up the convergence of this set among four different boards. it is my belief its one of two boards. the convergence amplifer board which can easly be replaced. however it just might be the green looking board called the small signal board. unfortantly this board takes special computer equipment to replace and align. i think union electronics might have convergence amp board = it getting hard to find rca parts for this set

Nov 03, 2010 | RCA HD52W59 HDTV Projection Television

1 Answer

JVC AV-48WP30 convergence drifting after IC replacement


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. 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, Zenith, and others. You can get a convergenece repair kit wiith instructions from the links below.

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

Problem #1) Convergence

Yours may have one or more of the following symptoms
  • Screen Looks 3-D
  • Colors wont align
  • Screen may look distorted or warped
  • No Audio/Video - makes a chirping sound.
Problem #2

Another common problem is dull or washed out video.
Your TV may have one or more of the following symptoms....
  • Dull looking picture
  • White looking picture
  • Halos around objects
  • Red/Orange looking picture

You can see some more examples and find a fix here
bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Mar 16, 2010 | JVC AV-48WP30 48" Rear Projection...

1 Answer

I have a jvc/av-65wp74 unit. The screen went blank and made a pop,pop,popping sound. we could not shut it off with the power button, which was blinking off and on. We had to unplug from the wall. we waited...


Try unplugging the Convergence amp board, which is located behind the speaker grille. If the set will power up with the Convergence amps unplugged the ICs will need replacement. I have seen many JVC in both the WP30 and WP74 pop through the speakers when the ICs short. Unplugging them takes them out of the equation and the set will power up but the pic will have severe convergence issues.

Dec 03, 2009 | FixYa Service

1 Answer

Hcn529w TV screen squished in on all 4 sides


The Convergence amp board should take care of the problem.

Dec 18, 2008 | Televison & Video

5 Answers

Convergence


Two boards govern this circuit . 1) convergence power supply board # 271860 2) convergence amplifer # 271861 . In most cases amp board is your problem . You might want to check the amp board for loose connections on it .Most of the times its the cable sockets on the borad have loose pins . This the board that has the metal heat sinks in a row of about nine of them on the board . Good luck

Mar 11, 2008 | RCA HD52W59 HDTV Projection Television

2 Answers

Vertical problems


This sounds like convergence amps not vertical, what was the set doing prior? If convergence amps first check: E2RESET DOES NOT RESET THE CONVERGENCE. THE CONVERGENCE CAN BE RESET BY PRESSING "MENU 12598970", IF THIS DOES NOT RESET THE CONVERGENCE TRY "MENU 125968970

Sep 17, 2007 | Mitsubishi VS-45605 50" Rear Projection...

4 Answers

Toshiba 51H84


convergence IC's need to be replaced

Dec 12, 2006 | Toshiba 51H84 51" Rear Projection...

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