Question about Toshiba 50HX70 50" Rear Projection Television

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Red color turned on today red is out of whack looks like old 3d without glasses

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Re: red color

You have defective convergence i/cs......This is the most common problem in projection tvs, that occur after about 4yrs.

Posted on Jan 11, 2008

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Sony kp-51 ws500 rear projection tv. when turn on tv there is 3 duplicate images, white, red. looks like I am watching an old school 3d movie, but without the glasses. i already took the...

The problem is your convergence circuit board gone bad. This is commonly caused by shorted/open IC on that board. First try to spot if there is a bad solder joints and resolder it. If nothing replaced the convergence IC. Also check the resistors around.
Hope it may help you.
Have a nice day!
Thanks for using Fixya.

Feb 13, 2011 | Sony Projection Televisions

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My tv looks like it is in 3D without 3D glasses,

Projection TV2_bing.gif sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV 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, Samsung2_bing.gif, JVC, Philip Magnavox, Panasonic, Akai, Pioneer, Hitachi, Zenith2_bing.gif, and others. You can get a convergenece repair kit from the link below.

Common Symptoms include....
  • Screen looks 3D2_bing.gif
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
  • TV shuts off after powering on - TV may also make a chirping noise.
Here are some photos of convergence problems.


Here is a quick test....

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

Try to adjust the red and then the blue convergence.

You should be able to move RED and BLUE in all directions - up, down, left, and right.

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

Note: If you TV has as flash2_bing.gif focus or magic focus button only try pressing the button. If it fails to fix the convergence your need to fix it. See below for a solution


You will need to replace the convergence chips and possibly some convergence resistors and pico fuses.
This is a a fairly easy DIY job if you know what you are doing. If you have never done this before we would advise calling a shop or if you want to do it yourself get a complete kit with instructions and support from

May 15, 2010 | RCA D52W20 52" Rear Projection HDTV-Ready...

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My rca projection tv has blue and green images like a 3D picture would without your 3D glasses, a double vision image and no other colors

sounds like the sensors are out of focus and your red sensor isnt turning on. look in the back of the tv for a master reset button or in your menu screen some sort of "Flash focus" or "convergence". They will realign the 3 sensors.

Dec 27, 2009 | RCA HD52W56 52" Rear Projection HDTV

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Strong colors, specifically those in the red

it seems you are experimenting a light engine problem.This is how your tv works: So basically the 3 Lcd chips that create the colors and image is going bad and thats why you get that color discoloration.Contact maker or look for your light engine online.

Nov 19, 2009 | Projection Televisions

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Convergence box is out - the picture is like looking at a 3D movie without the glasses.

There are two common problems with these sets.

Problem #1) Convergence

  • Screen Looks 3D
  • Colors wont align
  • Video may look distorted
Problem #2 CRT Fluid has clouded over. Symtoms
  • Dull looking video
  • White looking video
  • Halos around objects
  • Red/Orange looking video

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


Oct 23, 2009 | RCA R52WH73 Projection Television

1 Answer

Looks like 3D with out the glasses

you need the phillips dptv 305 - dptv345 chassis convergence repair kit which contains both convergence ics and all feed resistors and also free installation instructions with pictures. heres the link.

Jan 22, 2009 | Philips Magnavox 51MP392H Rear Projection...

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Picture in 3d without the 3d glasses

Replace 2 convergence chips, will start with stk ###-###

Oct 02, 2008 | RCA D52W20 52" Rear Projection HDTV-Ready...

1 Answer


Then it is likely the pre-amp transistor that controls the red is shorted out.
hopefully you have extended warranty.
there is a trick to likely get them aligned anyway if this is a tube tv.

Jan 12, 2008 | JVC AV-48WP30 48" Rear Projection...

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