Question about Toshiba 50H82 50" Rear Projection Television

1 Answer

Convergence...again 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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  • 3 more comments 
  • jfeisel Apr 25, 2008

    I can't seem to find these SSTR fuses by SOC corp anywhere for purchase. Can you recommend a site?

  • jfeisel May 06, 2008

    I replaced the STK392-110s and Fuses F850, 851, and 852. The TV now powers up but I still cannot manually adjust Horizontal convergence. Could it be a bad solder on the Horiz. chip or the resistors powering that chip? What resistors would I check? Thanks for all the help so far!!!

  • jfeisel May 11, 2008

    Checked resistors and resoldered ICs but still can't adjust the red gun horizontally. No problem with the blue gun. Any suggestions?

  • jfeisel May 11, 2008

    maybe it's time I replace the entire board??? what do you think?Can you recommend a site/part #?

  • jfeisel May 31, 2008

    Any more help??



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

Posted on Apr 17, 2008

  • 1 more comment 
  • Vista Electronics Apr 25, 2008

    HB Electronics 1-800-848-6888

    5.0 amp pico fuse part # 14-8050

    Andrews Electronics 1-661-257-7700

    5.0 amp micro fuse part # 23144627

  • Vista Electronics May 06, 2008

    Visually check resistors near IC's for discolor / burn.......

    Check with ohmmeter,also.

    You might need service literature / schematic diagram....

  • Vista Electronics May 31, 2008

    Replace IC's with first quality OEM parts or upgrade = see my first comment........................T.



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Related Questions:

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

Hi I have a toshiba 50h82 tv that is 7 years old with a convergence problem with the red and green lines that is going to cost $400 to fix but now that I am thinking about it before the convergence problem...

You are describing 2 different problems. The convergence problem can be fixed by either resoldering the convergence ICs or replacing them. These ICs cost about $25 each and there are 2. I suspect that the $4oo is for replacing the convergence board. This should not be necessary as the board can be fixed. Also, the brightness problem can be dirty CRTs, dirty mirror or faulty coolant fluid on the CRTs. If the picture was good prior to the convergence problem, the set is probably worth the repair if you can get the board fixed. While the board is being repaired, the service shop should be able to tell whether or not the brightness can be adjusted.


Oct 12, 2009 | Toshiba 50H82 50" Rear Projection...

1 Answer

I have an older model 50 something inch. Tv comes

Ur convergence it dead,need a convergence kit,u know how to solder right?Buy a convergence kit repair what in that kit.Tries these websites.Tv Repair,

Oct 02, 2009 | Toshiba 50H82 50" 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


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


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

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


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

1 Answer

Convergence for toshiba 50h82

Either mode is fine...just save your session when done!

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

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

1 Answer

Convvergence problem w/ Toshiba 50H82

You need to replace following ICs, may be 2 pieces in your tv for convergence problem.
IC, STK392-110T

Toshiba Part Number: 23135090X
Please search on net for availability in part stores

Sep 27, 2008 | Toshiba 50H82 50" Rear Projection...

1 Answer

Connvergence went from bad to worse

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.

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

1 Answer


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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