Question about Toshiba 50H82 50" Rear Projection Television

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Connvergence went from bad to worse

I turned on my 50H82 and realized I had a convergence issue. This is coming approximately 1 yr after I replaced the STK392-110s to address and resolve a similar issue. To make matters worse though was when I went into the convergence menu and tried to reallign the crosshairs, my TV went dark losing video and sound but the power light remained on.

I have the board out of my TV and cannot see any visible signs of stress on the board.

Can it be cheap STKs that I used or do I have a bigger problem?

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Depending on where you purchased the iCs some companies sell cheap versions of those ICs. You can get good quality ones at the following link and they offer free tech support by on line instant messaging if you need help installing them. here is a link to their site. its normal for the set to shut down when you try adjusting the convergence and the ICs are bad, Replace both of the ICs also the resistors that power them and you should be fine. If you dont know which resistors you need leave an email at the site with your model number and they will email you telling you what ratings resistors you will need.
http://servicemanuals.vstore.ca/

Posted on Apr 17, 2008

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Replaced both convergence ICs in my Toshiba 50h82 because there was a 3D effect with the picture. Now the TV won't power on at all now. The red light comes on and a double click is heard from a relay....


l have some suggestions:

First: double check all your soldering on the chips, and all the plugs you may have removed.

Second: Unsolder all pins on both chips in the set and see if set comes on. It is rare but from time to time you may install a new IC that is bad; if you discover you shorted pins to another pin when you soldered that may be telling you the new chip is now shorted.

Usually when you have one kind of problem and then another after you replace parts something you did went wrong or the new part is also bad.

This is not the most easy set to get at those chips (I have done a lot of them in peoples homes) and you should also always examine all the 1.8 ohm resistors around them, do not just look but test each carefully.

Let me know what happens.

SD TECH

Sep 22, 2011 | Toshiba 50H82 50" Rear Projection...

1 Answer

Shows a red scream


try the auto focus if shows error then try to do it manually in convergence and make sure you align all colors. If still doesn't work, then you will have to have the convergencs chips replaced.. Approximately $250 repair cost..

Mar 07, 2010 | Toshiba 50H82 50" Rear Projection...

1 Answer

50H82 red wavy convergence (stks didn't fix)


If the tin can module you are referring to is the hyper module, it is common to replace all 11 caps because the factory caps ****. Check for bridged solder connections at STK's search the forum at electromaniacs for 50h81 :)

Sep 15, 2009 | Toshiba 57H82 57" Rear Projection...

1 Answer

3 d images on toshiba 50hd82


This is a convergence issue, the stk392 ic's have failed on the convergence board, if you want to tackle this issue your self you will need soldering skills and a dvm. This is a common issue with all projection tv's.

Sep 01, 2009 | Toshiba 50H82 50" Rear Projection...

1 Answer

Toshiba 50h82 convergence issue


Projection TV sets have several common problems listed below.

Problem #1) Convergence

Symptoms:

  • Screen Looks 3-D
  • Colors wont align
  • Screen may look distorted
  • No Audio/Video - makes a chirping sound.
Example Photo:
5f6e85c.jpg
Problem #2 CRT Fluid has clouded over.

Symptoms


  • Dull Video, Washed out
  • White/Bright looking video
  • Halos around objects
  • Red/Orange looking
Example Photo:
ee1ca68.jpg

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

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

Dec 11, 2008 | Toshiba 50H82 50" Rear Projection...

1 Answer

TOSHIBA 50in rear projection. Mod# 55A60A


convergence ic 's are bad need to remove and replace chips, need soldering skills, do not attempt if you are not good at soldering and desoldering

May 16, 2008 | Toshiba 50H82 50" Rear Projection...

1 Answer

Convergence...again


Please read my solutions for Tosh "H" line convergence issues.
Check fuses F850,F851,etc.......use STK394-160E upgrade
IC's.....save $.....Use Hitachi kit # X 480293.............Also,
solder wire jumpers on signal board........................T.

Apr 16, 2008 | Toshiba 50H82 50" Rear Projection...

2 Answers

Samsung HLS4266W 43" dlp


Power issues (Tv not turning on) were typically due to faulty ballast. While the TV reports a bad lamp it is the ballast itself causing the issue. Samsung is well aware and will replace both the ballast and the lamp (since the lamp can be prematurely aged but the bad ballast). After replacment most people stop having issues.

Dec 24, 2007 | Samsung DLP HL-P5663W 56" TV

1 Answer

50H82


With our help and some skill at soldering,can be done ....

Don't worry about CRT ( Cathode Ray Tube)

Blue arching is convergence issue = needs STK392-110 IC's
replaced = requires chassis pull.........T.

Dec 19, 2007 | Toshiba 50H82 50" Rear Projection...

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