Question about Toshiba 43H70 43" Rear Projection Television

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I have Toshiba Projection TV model 43G9UXC. It's 9 years old. When switched on the picture shown in full screen but after 5 minutes or so the picture become smaller and smaller. What's wrong w

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6ya6ya
  • 2 Answers

SOURCE:

Hi there,
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Posted on Jan 02, 2017

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SD Tech
  • 14553 Answers

SOURCE: TOSHIBA 57H82 TV Blurry for 15 minutes till warms up

This is a model first sold 2002.

They have a history of the Hyper board failing. Usually noise or lines in the picture and the warmup time gradually gets longer and longer.

This board processes all signal from all inputs inside the set and is no longer available from Toshiba.

The only way to get one is from a national company called PTS Electronics who rebuilds or repairs them--cost for rebuilt board is about 220 plus shipping and part number for this model is:
Part Number23148024


I have a service bulletin with photos of the board on my computer.

It is a financial decision, not a job for the average do it yourself person to attempt.


Let me know if you have questions or need help.

SD TECH

Posted on May 03, 2010

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  • 11800 Answers

SOURCE: Hi I have 10 years old

This is a parasite signal in the video final board of the green CRT. Open the tv and inspect the connections to the green tube for bad solderings on the ground wires. Then the filtering capacitors on the video final transistors. Finally check the horizontal deflection/high tension module for bad or aged components.

Posted on Sep 25, 2010

tedatcit
  • 93 Answers

SOURCE: I have toshiba projection tv(Dramatic-Theatre)Model

blue colour gun is blown....replace .

Posted on Oct 23, 2010

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1 Answer

I have a hitachi 54' projection tv model num.57SWX20B i purchased about 8 years ago brand new. when turned on operayes fine for about 5 mins. then i lose my picture to multicolored lines after a couple...


This is a very common failure on these projection sets and a fairly simple DIY fix. All projection 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 pics of convergence problems.


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69189a5.pngSOLUTION #1

For more more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Common Problem #2) CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

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TV set after fluid change

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69189a5.pngSOLUTION

You 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

Apr 20, 2011 | Hitachi 53UDX10B 53" Rear Projection...

2 Answers

Projection television acting like an old picture tube TV.


Yes, 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

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2 Answers

Toshiba Tube TV 32AF45 Picture Squeeze in middle


Try unplugging TV while it is on and let sit for 20 minutes. Re-connect and see...
It sounds like your horzontal control is bad. It requires a new circuit board.
Mastersage!

Feb 18, 2009 | Toshiba 43H70 43" Rear Projection...

1 Answer

Hitachi 32" Plasma TV fault on screen thin pencil type line on left hand side of screen from top to bottom. Line thickness is approx 1mm TV is 5 years old Thanks Tom


iav a sky 42 inch plasma model number pd54250 when i swich it on i av got a green lined picture sometimes it comes on with a full picture can you help

Nov 22, 2008 | Televison & Video

1 Answer

Toshiba tv - no picture


Convergence amp ic bad
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
http://www.hdtvoice.com/voice/showthread.php?t=28929
Or send to ptscorp.com
http://www.hdtvoice.com/voice/index.php?s=
good luck
please mark the post with a fixya

Mar 04, 2008 | Toshiba 57H81 57" Rear Projection...

1 Answer

Toshiba 46In HD Rear projection TV Vertical lines on screen


We also have vertical lines with our JVC 62"... turning it off and letting it cool down is the only solution. For us, we know it's a problem with heat. We simply are wits end on fixing it. added two additional fans, a exterior fan to blow heat away from the back of the tv, pulled everything else away, etc.... Anyway, goodluck.

Dec 24, 2007 | Toshiba 46H83 46" Rear Projection...

1 Answer

Toshiba 53AX61/ have sound no picture


I have the same problem with the same Toshiba 53ax61 the picture does not work anyone,

Please email me at skyhawkbasketball@hotmail.com

Oct 09, 2007 | Toshiba 53AX61 53" Rear Projection...

4 Answers

Toshiba model 57H81


If you have zagged lines there are 10 small surface mounted capacitors you will need to change on the HYper Board. This is not an easy repair so alot of folks simply replace the hyper board. You will need a service manual to take this set apart and to get the proper part number. If you have no TV repair experience or do not know how to solder, as the hyper board has sheild arounfd it, you should play it safe and call out a pro to assist you in this repair. Good Luck

Mar 19, 2007 | Toshiba 57H81 57" Rear Projection...

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