Question about Toshiba 50H72 50" Rear Projection Television

2 Answers

Service adjustment for Toshiba 50hx70 convergence

Three years ago the TV was repaired and still works great when not in HD. I recently installed an HD receiver and when I use the 1080i, a red shawdow appears. When it was serviced, the tech left a piece of paper with the service convergence routine. I have since misplaced it. It provided afull grid rather than the 8 cross hair adjustment. Can you provide that routine.

Johncha

Posted by on

  • JohnCha Apr 06, 2008

    Well, I can get to the "S" on the top of the screen. From there I have a problem. It says, from the service mode pressing the yellow button on the remote will gives service convergence mode. What yellow button? There is no yellow button.

×

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 1,142 Answers

Can u give the specifications of the tv along with the hd

Posted on Apr 06, 2008

  • Maanita Chadha
    Maanita Chadha Apr 06, 2008

    it will be easier to pull up the deatails so that i can provide it to you if i have complete configuration details

×

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Toshiba Master
  • 19,396 Answers

Seems to be na ic problem

Posted on Apr 06, 2008

  • Ginko
    Ginko Apr 06, 2008

    Here is explained convergence setup procedure. If the problem persists, one of your convergence ICs may have gone again.

    Regards

  • Ginko
    Ginko Apr 06, 2008

    Are you using the original remote? It should have 4 colored functions buttons (the ones you use with teletext) there should be a yellow one.

×

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Im having a convergence problem with my 50HX70. The tv was working fine until one day i turned it on and there was a blue shadow on the bottom half of the screen. I tried to adjust it and the horizontal...


Tv have a dead convergence board.The convergence board require replacing 2 STK convergence ICS and some or all of it resistors too.To fixed the convergence board to fixed the tv picture convergence problems.U have all tools and can do soldering?Yes,tries websites like Tvrepairworld.com,Tvrepairkits.com to buy a convergence kit to repair it urself.Or the shop,will $300-350 for parts and labors.

Mar 18, 2011 | Toshiba 50HX70 50" Rear Projection...

1 Answer

We replaced the red and blue convengence units on our Toshiba 50HX70 four years ago, the blue is out again is this worth repairing again? The TV is now nine years old


Yes,the tv still good.I rather spend 300-400 dollars.Than 1100-1200 for a new one.The average tv replacement about 15 years.Using 6-7 hours a day.

Feb 24, 2010 | Toshiba 50H72 50" Rear Projection...

1 Answer

Toshiba Rear Projection TV picture color is now a greenish hue


Hi, I used to work in Best Buy and one of the key things about rear projection TVs and the reason they push those service plans on you is that the tubes/colors need to be calibrated each year. You can do this yourself by checking out the following website:  

http://lgknowledgebase.com/kb/index.php?View=entry&EntryID=3229 

If you are not able to adjust the convergence using the remote you will need to replace the convergence chips. 

Typical Symptoms

1) Convergence menu does not work for one or more colors.  
Such as: Red moves up,down, but left or right fails. 

2) Screen is bowed looking.

If you have one or more of the problems above you need to replace the convergence chips. You can get a kit and instructions from www.TvRepairKits.com  

Hope this helps :) 

Sep 12, 2009 | Toshiba 50H82 50" Rear Projection...

1 Answer

Convergence Issue on Toshiba TN50X81 - Service Manual & Parts Source?


Replace the convergence IC's - P/N STK192-110 with part STK192-150 or 180. Then you can go back in and make the detailed convergence settings and get your picture back in alignement. Also check the flame-resistant resistors around the ICs to make sure that none of them have opened up.

Jan 11, 2009 | Toshiba TN50X81 50" Rear Projection...

1 Answer

50hx70 blue projection light is concaced at top and bottom of tv


When the convergence amplifier ICs go bad (STK392-xxx), they RARELY cause more than one color to go out. The fact that the top and bottom of the picture are effected indicates the vertical convergence IC. Replace both, and while you're in there check the bias resistors... it is likely one of these is open. Once the ICs have been replaced (as well as any open resistors), customer convergence followed up with the auto convergence should do the trick.

Nov 19, 2008 | Toshiba 50HX70 50" Rear Projection...

1 Answer

Distorted Picture


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.

Convergence problems are very common on all Projection TV sets including Sony, Samsung, JVC, Philip Magnavox, Panasonic, Akai, Pioneer, Hitachi, Zenith, and others. You can get a convergenece repair kit from the link below.

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 - TV may also make a chirping noise.
Here are some photos of convergence problems.

49abec3.jpg
f0add3d.jpg


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 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 solution

93a1209.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 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 www.TvRepairKits.com

Aug 02, 2008 | Toshiba 65HDX82 65" Rear Projection...

1 Answer

Hdtv/ direct tv service


more then likely you are using component input if you are check to make shore they are hooked up correctly red to red green to green and blue to blue if they are you might have a bad cable I have not seen a color stream board bad yet

Oct 16, 2007 | Toshiba 50HX70 50" Rear Projection...

1 Answer

TV picture shaking!!!


It sounds like the Hyper board is begining to fail....Does the menu shake too?

May 16, 2007 | Toshiba 50HX70 50" Rear Projection...

1 Answer

Toshiba 50HX70 convergence problem


replace convergence ic,s part # stk392-110, you will need two of them.

May 12, 2007 | Toshiba 50HX70 50" Rear Projection...

1 Answer

Toshiba 55hx70


check all the fuses. Its easy to mis the 2amp pico fuse mounted near the middle of the power board. When this fuse opens, the red at the top, especially at the left side of the screen, will not adjust enough. Be sure to use new heatsink compound behind the ic's Shutdowns,are usually,not an easy repair Good luck

Jan 31, 2006 | Toshiba 50HX70 50" Rear Projection...

Not finding what you are looking for?
Toshiba 50H72 50" Rear Projection Television Logo

Related Topics:

64 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toshiba Projection Televisions Experts

Jaime Hernandez

Level 3 Expert

2267 Answers

Dave Naylor
Dave Naylor

Level 3 Expert

834 Answers

The Knight
The Knight

Level 3 Expert

68202 Answers

Are you a Toshiba Projection Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...