Question about Toshiba 50HX81 50" Rear Projection Television

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I own a Toshiba 55h70 projection tv and the top left corner looks like a page turned over. It is blue and red and cuts that part of the picture on the screen. Any ideas what is causing this?

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Its the projection lense try adjusting it manually till get an enhancxed Pic.

Posted on Jan 21, 2009

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I get a double click when I turn on the set... The red light blinks with 5 seconds intervals. When on occasion when I turn it on and get one click the tv comes on but will black out about 15 to 20 minutes...


Hi
A common problem for these is bad capacitors in the power supply, Remove the back from your Tv and look at the power supply on the left hand side.

You will see roughly around 9 x capacitors that are bulged / domed shaped on top usually these are valued at 3300uf 10V any that have bulged or leaked a brown like substance should be changed.
This will cure the problem as they overheat being sat next to a heatsink that gets very hot!
Try and change them for the same 3300uf but a higher voltage.
Hope this helps

Aug 06, 2011 | Toshiba 55H70 55" Rear Projection...

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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 picture is distorted in the bottom left corner of the screen. I can't get the red and blue crosses to line up in the configuration menu. I am guessing the motor that adjusts the projectors is shot. Can...


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 http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Oct 09, 2009 | Toshiba 55H70 55" Rear Projection...

1 Answer

Toshiba 55H70 COLOR PROBLEMS


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 -*.*

Oct 08, 2008 | Toshiba 55H70 55" Rear Projection...

1 Answer

Red/Blue line overlay..........


replace convergence chips and limiting resistors

Aug 29, 2008 | Toshiba 55H70 55" Rear Projection...

2 Answers

Toshiba 50 rear projector tv


can you post a picture of what the picture looks like? I may be able to help if I can see what the picture is actually doing.

Jun 08, 2008 | Toshiba 50H82 50" Rear Projection...

1 Answer

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

Blue and white picture


It sounds as though you may have a bad red convergence chip. If it's not the chip, you may have a bad Red CRT ( Picture Tube ). You may want to obtain professional assistance unless you have the proper test equipment to check these items. I hope this has helped in some way.
Ed
NC Electronic
Mills, Wyoming
Have a Great Presidents Day

Feb 05, 2008 | Toshiba 55H70 55" Rear Projection...

1 Answer

Toshiba 55H81 Blue and Red Only


so you missing the green is is either a bad connection on the green crt or convergence amp ic bad
do this first
http://www.riddledtv.com/repair/journal/Toshiba51H84/index.html
then if that doesnt fix it
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Jan 23, 2008 | Toshiba 55H70 55" Rear Projection...

1 Answer

Toshiba 55" 55H70 model. Turns OFF, but won't turn ON until I unplug it from the wall first.


sounds like loose connections on the convergance amps ic's
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Aug 22, 2007 | Toshiba 55H70 55" Rear Projection...

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