Question about Toshiba 50H72 50" Rear Projection Television

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Toshiba 50H72 have blue and yellow ghosts - Toshiba 50H72 50" Rear Projection Television

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Sounds like your convergence circuit went out. It lines up the red,green and blue picture tubes so the colors are lined up. Usually these TVs all use the same type of IC chips called "STKs" both usually get replaced along with any resistors etc.. around these chips that may have burned up. Depending on who fixes it could be around $300-400 parts and labor.

Rustym62

http://www.the-tv-dude.typepad.com

Posted on Apr 26, 2009

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Ghosting or a 3D image. A yellow and blue ghosting or shadowing image. Looks much like the top picture in the "picture ghosting image" entry. Is this a convergence problem?


Your convergence has failed and needs to be repaired. Once quick test is to goto your convergence menu and see if you can adjust red and blue. If not its has failed and needs to be fixed. You can call in a repair shop or you can get the parts and instructions from www.TvRepairKits.com and do the repair yourself. Its a fairly easy DIY fix.

Aug 09, 2011 | Toshiba 50HX70 50" Rear Projection...

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Toshiba 50h72 has red and blue lines through it


that could be a convergence problem or the hyper module.

Jan 28, 2010 | Toshiba 50H72 50" Rear Projection...

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Blue light (RGB) will not converge (Toshiba 50H72)


Look around the area of the STKs and you should see some low valued resistors. One lead of which will be attached to the STKs. One or more of these is open. Replace it/them and you should be fine. These are current limiting resistors (effectively fuses) for the power to the STKs. One of them is not getting power.

Dan

Jan 23, 2009 | Toshiba 43H70 43" Rear Projection...

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TOSHIBA 50H72 50IN. REAR PROJECTION TV BLUE COVERGANCE PROBLEM


you have a convergence ampliphier ic failing that will need to be changed and then adjusted
average repair cost for this are 280.00 to 320.00

Jan 20, 2009 | Toshiba 50H72 50" Rear Projection...

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Red & Blue lines on screen


stk392-110 i think mine was made in 2002 and i also had to replace mine

Oct 26, 2008 | Toshiba 50H72 50" Rear Projection...

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I have a 50h72 rear projection tv from toshiba, my convergence ic's are toast. i need to replace them, i got the ics and have opened the back of the tv. where the bleep do i find these ics inside?


not sure its the same part making our covergence problem, but when watching t.v has a shaded yellow and blue oval at the bottom of the screen.any possible help with the problem would greatly be appriciated.

Aug 09, 2008 | Televison & Video

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Only half the screen is being projected?


i am having the same issue............any solutions??

Mar 31, 2008 | Toshiba 50H72 50" Rear Projection...

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50H72


The most likely cause is shorted convergence chips and possibly a few pico fuses.

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,Pioneer2_bing.gif Hitachi,Mitsubishi,Zenith and others.
You can get a convergenece repair kit with 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 - 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

You can see some more examples and find a fix herebb0cf99.png http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Mar 25, 2008 | Toshiba 50H72 50" Rear Projection...

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Tv has a ghost image in red


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 21, 2007 | Toshiba 50H72 50" Rear Projection...

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