Question about Toshiba 55H70 55" Rear Projection Television

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Toshiba 55H70 COLOR PROBLEMS

My tv is has a dominant red color and the horizontial print or picture will not line up this is more evident in the top and lower inches on the screen. Is this a do it yoursekf fix if i can find the part(s)?

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Turn your red screen voltage down till you get grey, your convergence out puts will need replacing
also the limiting resistors usually a low resistance, cheers parts from global look for stk -*.*

Posted on Oct 08, 2008

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I have a 55" rear


U tries go into the tv colors setup and turn down the color RED,might help?Tv could have a problems known a convergence problems,it dead very common problems for old DLP tvs.The tv have R,G,B colors lines mis alignments,have colors shadows pictures or 3D pictures look alike?Yes,than the tv have a dead convergence board.The tv convergence board require changes 2 STK convergence ICS and some or all of it resitors too.For fixing the convergence board to solved convergence picture problems.The shop,will cost u like $300-350 for parts and labors.

Feb 08, 2011 | Hitachi Projection Televisions

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What causes the yellow and blue ghost on tv, and how to solve it. It is on a Toshiba rear projection


The problems ur tv have is known as a convergence problems,it dead.The tv colors lines R,G,B mis alignment,have colors shadows pictures or 3D pictures look like.The tv convergence board have dead 2 STK convergence ICS and some or all it resistors are dead.These parts on the tv convergence board,must be replaced these parts on the tv convergence board to solved the tv picture convergence problems.The shop,will cost u $300-350 for parts and labors.

Oct 25, 2010 | Toshiba 55H70 55" Rear Projection...

1 Answer

My colors all of a sudden went out of wack


Is there an advanced convergence setup anywhere in the menu where the screen displays a grid? If so, you might want to get into that and move along the grid to each section that looks off. Adjust until the color falls behind the gridline, and move on to the next. It can be a time-consuming process, but should take care of your convergence issues.

Jan 20, 2009 | Toshiba 55H70 55" Rear Projection...

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Toshiba 55h70


sounds like the convergence ICs are defective and need to be replaced, they are STK392-110 you can get replacement ICs at the following link that include free instalation instructions.
http://servicemanuals.vstore.ca/

Jun 06, 2008 | Toshiba 55H70 55" Rear Projection...

1 Answer

Bad picture


Try to consider the following tips:

Smearing out of one or several colors, best seen in txt-mode, my 27CE4599/30R smeared out in red and green, not in blue, fully exchanging the drivers (input and output complete, otherwise the RGB driver will blank the crt) moved the fault to the other color
Replace the 180K feedback resistors in the amplifiers with normal 1/4W metal film instead of 1/8W, they can become open circuited (in mine both green and red were faulty in this way). Change all 3 and not just the defective ones, replace also all the paralleled 75K resistors per color (fe by 47K+27K) to prevent bright color raster (they can also become open circuit)

Nov 29, 2007 | Toshiba 55H70 55" Rear Projection...

1 Answer

Toshiba 42 inch rear projection


http://www.digitalhome.ca/forum/showpost.php?p=564268&postcount=220
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Nov 23, 2007 | Toshiba 55H70 55" Rear Projection...

1 Answer

Double imaging


The Toshiba 55H70 is a standard rear projection set. It does not have a "lamp", it has 3 picture tubes. When the colors suddenly do not line up on the screen, it means that one of your convergence output IC's has burned out and needs to be replaced. This is very common on those sets. If your set is using the STK392-110 IC's, it is probably a good idea to go ahead and replace both IC's with the newer upgraded STK392-150 IC's. The IC's should be replaced and the convergence circuits realigned by a qualified tech familiar with Toshiba projection sets.

Sep 11, 2007 | Toshiba 55H70 55" Rear Projection...

1 Answer

55HX70


needs convergence ics period

Nov 24, 2006 | Toshiba 55H70 55" Rear Projection...

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