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Toshiba 43HX70 convergence problem

My 6-yr old Toshiba 43HX70 rear projection TV has a major convergence problem. The other night, the blue gun (I think) became totally out of convergence with the other guns, so there is a "shadow image".

Accessing the convergence controls through the menu did no good. It's too far out for that. Also, when it happened, the TV power went on and off several times, and the power light flashed.

Is there any chance I can fix this myself? Any and all help would be greatly appreciated. Thank you.
toshiba 43VJ22 CONVERGENCE problem, it started as an intermittant problem but now for past week my screen ghosts red and green and when i try to converge it just goes so far and then jumps out again...

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  • 13 Answers

One or both of the STK convergence chips have probably failed.

I can give you guidance on this if you are confident to do the repair. I had the same problem with my Tosh 40WH08B and after replacing these chips it works like new.

Posted on May 28, 2009

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Posted on Jan 02, 2017

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Image on screen looks concave(middle of screen looks farther away than left or right side.)


Roseannmace,
Your TV is out of convergance. You'll probably noticed that there are red, green, and blue images. You'll need to determine if the problem is in the power supply or the convergance board. Usually, the convergance amps go bad and opens resistors. Do you know how to read a schematic and use a multimeter? You will also need to know how to remove the old parts and solder the new parts into the circuit board.

Ken.

May 27, 2010 | Toshiba 43HX70 43" Rear Projection...

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Toshiba 43hx70 Cinema projection TV-where are the IC relays?


DID you ever get this fixed I am wanting to replace mine, I paid big $$ for this tv back 6 or so years ago, the picture cinvergence isnt real bad, but I cant line u the red and blues in the menu as good as they need to be. I was also wondering If i replace the lamp if the tv would be brighter. I have most my setting turned up but...The picture is not as bright and crisp as it used to be any one have a suggestion on this also..

Jan 02, 2010 | Toshiba TN43V71 43" Rear Projection...

2 Answers

Convergence problem


sounds like you need to change the convergence chip to me. you can order a kit with instructions from www.tvrepairkits.com for most tv's.
If you plan on doing this you need a good soldering gun and a steady hand.

May 18, 2009 | Toshiba 43HX70 43" Rear Projection...

1 Answer

Toshiba 43HX70 convergence problem


Yes its actually a very easy repair. You need two STK392-110 Convergence ICs and six 1.2 ohm 2watt resistors. You can get the replacement parts and instructions at the following link.
http://servicemanuals.vstore.ca/

Apr 27, 2009 | Toshiba 53H71 53 in. Rear Projection...

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Toshiba cinema series convergence problem


If you wish to get some details; visit the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/ Convergence adjustment procedure to many brands of projection TVs are given in detail.

Jul 10, 2017 | Toshiba CX36F84 TV

1 Answer

Blue halo on bottom 1/3 - Convergence issue with my 43HX70


HELLO SOUND LIKE YOU NEED TO CHANGE YOU IC CHIP'S ON THE CONVERGENCE BOARD.1!1 THERE WILL BE THREE OF THEM .!!! CHANGE ALL OF THEM AND THIS SHOULD FIX YOUR SET. "GOOD LUCK"

Aug 13, 2008 | Toshiba 43HX70 43" Rear Projection...

1 Answer

Blue Halo - convergence issue with 43Hx70


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

Aug 13, 2008 | Toshiba 43HX70 43" Rear Projection...

1 Answer

Toshiba 50H82 blue arcing?


color shadows on numbers or letters indicate a possible convergence problem.. might be a crt deflection problem.

Dec 18, 2007 | Toshiba 50H82 50" Rear Projection...

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