Question about Toshiba 50H72 50" Rear Projection Television

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The red in my tv is out of place

The red in my toshiba 50h72 is out of place it seems to have a bowing effect what do i do please help

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You will need to have someone come out and reconverge the tv for you. it shouldnt cost alot but its what you will need to do unless you can do it youself.

Posted on Jan 18, 2009

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2 Answers

Power but no picture


the Y-SUS BOARD is for picture in tv.if the picture is not coming or not proper the Y-SUS board needs replacing .but if the picture is blurry or with linings reparing helps.but in your case the tv does not turns on with y-sus board connected only error led comes on.this means y-sus board needs replacement.
you can get it from www.partstore.com
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if you are not familiar with replacing the y-sus board its advisable to get it done by local tv repair technician familiar with your brand/model.
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This will help. Thanks please keep updated.please do rate the solution if helped.thank you for using fixya.

Oct 26, 2009 | Toshiba 50H72 50" Rear Projection...

1 Answer

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...

1 Answer

The red seems to be out of place on my toshiba 50h72 projection t


Replace both convergence ICs they are stk392-110 you will also need at least the six 1.8 ohm 1watt resistors. You can get replacement ICs and resistors at the following link and they provide free installation instructions so you can do the repair yourself.
heres the link.
http://servicemanuals.vstore.ca/

Jan 18, 2009 | Toshiba 50H72 50" Rear Projection...

1 Answer

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...

1 Answer

Toshiba 50H72 Convergence IC's replaced now no picture


When I originally removed the board with the convergence IC's I labeled all of the wiring harneses with number tape as I keep a multi number roll on hand as I am a radio broadcast engineer. However there was one set at the very back of the board behind a large heat sink I didn't label because that location was the only place they would fit. When replacing the board after replacing the IC's I missed that particular wiring harness as it didn't have numbers and I didn't see the harness laying among the other wiring. After removing the board to check my soldering work that's when I discovered the harness. I plugged that set in along with the rest, replaced the board, and after cleaning the CRTS's and the mirror the set worked good as new and a much sharper, cleaner picture. Thanks for the information on your forum as it always feels to repair something yourself and save a few hundred bucks to boot.

Oct 11, 2008 | Toshiba 50H72 50" Rear Projection...

1 Answer

Toshiba 50h72 picture and sounds takes 20 min to warm up


Projection TV 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.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projeciton sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....
  • 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.
  • TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.
Here are some photos of convergence problems.

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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. And you should be able to get the grid straight.

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 flash 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 fix

69189a5.pngCONVERGENCE 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 are handy and can follow directions. You can get complete repair kits from TvRepairKits.com or click here. They have put together DIY repair kits that include the OEM parts and step by step photo instructions for each repair. If you are not handy or can't follow directions we would suggest calling a shop.

Sep 09, 2008 | Toshiba 50H72 50" Rear Projection...

1 Answer

Convergance issue still exists


did you ever solve this?
v_incent_mills@hotmail.com
I have the same problem with mine.

Mar 21, 2008 | Toshiba 50H72 50" Rear Projection...

4 Answers

My Toshiba 50H72


http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Jan 11, 2008 | Toshiba 50H72 50" Rear Projection...

1 Answer

Rear Projection Tv Problem! black and white... Please help


go into menu turn color off see if you have a black and white picture if not adjust red,green, and blue screen drive on controls in back of tv you have red, green, blue it will have focus /screen controls cover each tube do one at a time blue focus and screen drive adjust to clear blue picture do all 3 tubes, then adjust them to where you have a black&white picture once this is done turn color controll back on.Thank You for using FixYa and Have a Nice Day.

Nov 11, 2007 | Toshiba 50H72 50" Rear Projection...

1 Answer

Color is Bland--Seems we're missing red color


THE PROBLEM IS THE SAME AS I HAD PREVIOUS,A PROJECTOR BULB HAS GONE ON THE RED PROJECTOR,YOU PROBABLY HAVE YOUR SOLLUTION BY NOW I HOPE SO ANYWAY.

Feb 24, 2007 | Toshiba 50H72 50" Rear Projection...

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