Question about Toshiba 57H82 57" Rear Projection Television

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Just replace stk convergence and still not right.

I have a toshiba 50a50 and just replaced the stk chips and nothing is changed. mine isnt as bad as some ive seen on internet, but its all corners, top, and bottom that are a little distorted, the center is fine. c

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You need to check all the resistors in the area of the ICs for opens and all the microfuses in the convergence area. I have a tip at http://www.fixya.com/support/r4220499-change_projection_tv_convergence_ics which explains the problem, how to fix it and where to get the parts. Let me know if you need more help. Thanks for using FixYa and for the great rating.

hardrocko

Posted on Apr 30, 2010

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1 Answer

Red light keeps flashing on toshiba theatre. How can I fix it?


on the older sets it is a short and usually in the convergence circuit, the way to know is located the convergence chips and unsolder both from the board (18 pins each) and if set then comes on (WILL LOOK BAD) one of the two chips is bad and both need to be replaced----should be stk-392=110 chips.

May 22, 2012 | Toshiba TP55F80/81 55" Rear Projection...

1 Answer

I have a KDP51ws550 tv that has convergence problems. Flash focus would not work and neither would manual convergence. I replaced the both convergence ICs and checked the pico fuses, turned the unit back...


Check your soldering. Check the vertical power board on the far left when looking from the back. It has fuses on it as well.

Depending on quality of STK chips, they could have been bad or failed right away. Best things is to look at the schematic, verify what colors you can move and see which STK chip is not functioning.

If both chips are not function after replacement, likely a fuse. Be sure to verify the resistors next to the STK chips.

Mar 06, 2011 | Sony Grand WEGA KDP-51WS550 51" Rear...

1 Answer

The picture is warped red & blues distorted


Your Convergence ICs have failed. It is very common on rear projections. The solution is to replace the STK chips, check fuses and the resistors next to the STK chips. Replace as necessary and re-align via the service menu. It is about a $300 repair at a tv service center. You will need the service manual if you decide to do this yourself.

Try This:
When you notice the symptons Use this simple test to verify.
Go to the users menu on the tv.
Look for the converge option probably under setup or video setting. Converge is short for convergence to align the red and blue colors to the green color.

If you cannot move the red either horizontal or vertical, then the STK chip has failed for red section.
If you cannot move the blue either horizontal or vertical, then the STK chip has failed for the blue section.

If you can move both in each direction then the problem is something else.


Note if one STK chip fails, you replace both regardless. They will be right next to each other.

Feb 20, 2011 | Toshiba 57H81 57" Rear Projection...

1 Answer

Toshiba 65hdx82 convergence issues


check fuse resistors near STK, and broken PCB around digital convergence board (board in a metal box verticaly mount beside STK.

Apr 23, 2010 | Toshiba 65HDX82 65" Rear Projection...

1 Answer

Toshiba TP48C90 Convergence (replaced ICs, worked for 2 days)


Well, my thought is that there are a ton of knock off generic convergence IC's out there that usually hold up as long as yours did. Professionals like me will only use Sanyo original STK's. The counterfeit STK's out there are everywhere. Do some research on the web to locate Sanyo originals, they are out there.

Jun 11, 2009 | Toshiba Televison & Video

1 Answer

Toshiba v43j22p 42" red shadows and lines over screen


6b5ee7e.png You may have a convergence problem. Here are some of the most common symptoms.

  • 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.
Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.


You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick email and they will put one together for you. Their kits includes photo instruction guides, original Sanyo STK chips, convergence resistors, pico fuses, etc.

Feb 02, 2009 | Toshiba 57H81 57" Rear Projection...

2 Answers

Toshiba 42H83 projection TV red convergence issue


the Convergence Ics are STK392-110 ICs you can get replacement Ics at the following link and they provide free instalation instructions.
http://servicemanuals.vstore.ca/

Jul 03, 2008 | Toshiba 42H83 42" Rear Projection...

1 Answer

Samsung hc-p4241w problem


Look for 2 Big black chips they will be together on convergence broad STK-392-110s,120s replace both ics.Use STK-392-180s

Mar 29, 2008 | Samsung HC-P4241W 42" Rear Projection...

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