Question about Toshiba 42H81 42" Rear Projection Television

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Dark Picture on my 5 year old 42H81

I had the tv on about an hour when it just lost about half the light level. You can see everything but is dark.

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Re: Dark Picture on my 5 year old 42H81

Any horizontal or sqiiggly lines in the picture or just a loss of light level?

Posted on Nov 30, 2007

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When I turn on my tv it may at times have a white screen-then it goes dark and eventually the picture will come back, its been happening more and more lately.

The lamp only has a life span of about 8000 hours if you are past that then it maybe time to replace. If you average out 6 to 8 hours a day X 365 x years you will get the average hours used, not sure how old you set is but the formula works.

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Dark picture

Hmm my dad's old t.v. just cut out on him it took awile to turn on this my be the end of ur tv so this might be a power problem but older t.v. loose there colour on the screen my uncle had a like 10-15 year old t.v the screen was like green when it was light but when u turned of the light or closed the blind's it's picture was ok so try that.

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Picture is dark

Adjust video settings:
  1. Press Wega Gate
  2. Select Settings
  3. Highlight Video
  4. Press + to select
  5. Adjust/increase the brightness.
  6. Press Wega gate to exit.
If picture is still dark, you need to replace the lamp again. Sony recommends that you replace the lamp:
  1. After approximately 8,000 hours of use.
  2. When the screen becomes dark or the color becomes unusual.
  3. When the lamp indicator on the front of the TV flashes.

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Everything functions fine but the picture is very dark and beyond adjustment through normal menu options, I can move the brightness all the way and it doesnt help any, is there a backlit bulb that might be...

I think you answered your own question. You have a rear projection television. It sounds like the lamp is not functioning correctly.
All projection lamps have a recommended life measured in hours. I checked the web and this model appears to be about 3 or 4 years old. from 2005 or so.
The lamp in my Samsung is rated at 3000 to 5000 hours, I had 12,800 when the service Tech was in changing another part.
3 or 4 years running one lamp is a good run. This is why DLP has lost favor for table top sets, Most are LCD or Plasma now.
Check you TV for it's lamp model and them shop around allot. Lamps are not cheap however some suppliers offer much better pricing that others. Care should be taken to make sure you order and purchase real replacement lamp and not a clone / compatible model. Original parts should produce the picture you are expecting

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Tv will not turn on

For dark picture I need to ask one question, How long ago you replaced its lamp? one year, two years?

Picture brightness is depends on lamp in LCD rear projection (DLP) TVs and if lamp got weak in generating light, you will see dark picture.

I would recommend to replace lamp and buy Sony original lamp from Sony Accessories Store.

Required lamp part number is as follows..
F93087500 LAMP BLOCK ASSY XL-2400
and price is $200
Good luck.

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Dark picture problem

there are 2 mirrors did you clean both there is one down in front near the light source when front screen removed lean in and look down there is another smaller mirrorclean it

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you know it sounds like the same problem i had....
look this is something you can try.... "turn the tv off and unplugg it!!!"'ll need to take out the lower front part of the tv......(where the speakers are to be exact) on each lower end you will find 2 screws..Be careful it will open to the side and there are many wires, i suggest you mark them to know where to put them back...then right in the middle there will be a black cover with about 5 screws..take them out....and look at the very bottom you'll see a thing with 6 pegs....the top ones are for the screen "DO NOT TOUCH THEM"...the ones on the bottom are for the adjust them...the left one it's for blue, the middle one it's for green and the last one it's for red...

I had the same problem after i moved....and after i re adjust that the tv looks super...
i hope that helps..:P

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The procedure for correcting dark picture is EXTREMELY dangerous.. If you're not sure about what you're doing call a qualified technician or you could seriously hurt yourself or get killed!

Picture Dark, abnormal, Changing Color Temperature
  • Clean the Spark Gaps on each CRT PWB. Remove the Cap, clean the contacts with thin fine sand paper, blow out, reseal.
  • Remove the CRT Sockets, clean the pins on the CRT. Push the CRT socket on and off several times.
Make really sure before you sttart this process that the Tv has been unplugged for several hours and that you discharge the crt as you remove the anode. There is some extremely high voltage present for hours after the Tv has been off...
Or get a reputable shop to come out and do the procedure for you - - might just save picking yourself up of the opposite wall.

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