Question about Toshiba 42H81 42" Rear Projection Television

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42H81 dark screen

Hi my toshiba 42H81 screen has gone dark.i have set the brightness to 100% and its still only around 30% bright. wot could this be?
thank you

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  • 61 Answers

Try to adjust the sharpnes

Posted on Apr 08, 2008

  • Francisco Punzalan May 01, 2008

    did you see the small thing that look like a small stick, try to pull it softly, i have already expirienced tha before on my laptop,

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1 Answer

My tv's screem is little dark


Hello
If you set the lamp mode to LOW POWER, each time you turn ON the TV the lamp will start out at HIGH BRIGHT mode, but will switch to Low Power mode after a short period of time. You may notice a change in screen brightness when this happens. This is not a malfunction.
Just check whether you have selected this mode. Go to its user manual [P57]. All details are there about the lamp brightness settings. If it is not set to Low Power and still you get a dim picture, the lamp may be weak and has to be repaced. OK.

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I had to adjust the brightness to 100% and you can still barely see it and it has a blue tint


This TV is CRT driven and when the brightness is a issue you would need to diagnose the Blue CRT and or the Fly back transformer.

Many times the transformer is not providing enough power to that CRT witch can cause this to happen.

Without the TV in front of me it would be difficult to pin point.

Also you would want to consider if the TV is out of Focus thus causing this blue tint, Here is a on line part store that can help you in purchasing the parts for the tv if your interested in Do It Yourself repair.

http://www.partstore.com/Model/Toshiba/Toshiba/42H81.aspx?p=4&z=50&c=3b663bdcbb0b5634f5cc800d37496d25&bs=Category&bd=Asc&ms=Category&md=Asc&k=#1

First if the TV is not illuminating with the brightness function you would consider at this point the TUBE "CRT" or the Fly back witch drives them.

Thanks for your questions

Dec 13, 2010 | Toshiba 42H81 42" Rear Projection...

1 Answer

Toshiba rear projection tv has red and blue on the tv


Projection TV sets have several common problems listed below.

Problem #1) Convergence

Symptoms:

  • Screen Looks 3-D
  • Colors wont align
  • Screen may look distorted
  • No Audio/Video - makes a chirping sound.
Example Photo:
5f6e85c.jpg
Problem #2 CRT Fluid has clouded over.

Symptoms


  • Dull Video, Washed out
  • White/Bright looking video
  • Halos around objects
  • Red/Orange looking
Example Photo:
ee1ca68.jpg

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

bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Mar 24, 2010 | Toshiba 42H81 42" Rear Projection...

1 Answer

TV screen became a lot darker than normal.


Hi.

yeah, opened the front flap of the TV>menu> brightness> increase. Sorted. No problem.

ain't gonna bother asking any more questions on this forum..........no help at all .

cheers, Pat

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Strange Image Flubbering/Convergence Problem, Flutters From Dark Picture To Light Picture.


you "tooled around with the convergence board" well this chassis has several problems if the convergence doesnt hold replace both stks resolder around that area per tosh tech bulletin the bright problem is probably the hyper module all toshs should be checked with toshiba website to see if they were part of the recalls for power supply caps

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