Question about Sony Grand WEGA KDF-55XS955 55" Rear Projection HDTV

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Dark picture I recently replaced the bulb on my sony 55xs955 and the picture brightness is very low.

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Because its a dlp set I would suggest a service manual. that will allow you to properly diagnose exactly whats going on with it. You can get the service manual for your model at the following link for 10.99. Hers the link.

Posted on Jan 17, 2008


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I just bought a new lamp 3 months ago, and the screen is now very dark. With the brightness all the way up the picture is dark.


Your most likely fault is bulb failure. The only way to confirm a weak bulb situation is to replace with a known "good" bulb. Maybe your replacement bulb is not the correct one, or has a problem, like damage from shipping or poor quality to start with. We hear from many users that buy el cheapo bulbs from Internet shopping carts and have failure within 30-90 days. Many shopping carts churn out inferior copies, surplus or rejected products ranging from TV parts to doll clothes and costume jewelry.

Premature lamp failure can also occur with rough use such as:
  • Turning off TV and starting again while still hot.
  • TV turned on while Lightning strikes or other power line "bumps" occur.
  • Collisions with vacuum cleaners or balls bounced against TVs while operating.
  • Over-heating caused by poor ventilation or direct sunlight.
You may also have optical engine failure if images on the Sony Optical Engine Fault Gallery appear with the dim picture.

Feb 11, 2011 | Sony Grand WEGA KDF-55XS955 55" Rear...

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Dukane 7100HC The picture is dark. In a completely dark room. I recently replaced the bulb, but the picture was dark before I replaced the bulb. I've adjusted the brightness, but it just washes out the...

Turn the brightness up slightly and turn the contrast on the highest setting. There may also be settings to control wether your projectin on a wall or on a screen. Make sure these settings are correct to your setup.

Jan 25, 2011 | Dukane ImagePro 7100HC Multimedia...

1 Answer

Sony KDF-E50A10/4 dark picture

Dark picture is indication that tv needs new lamp.
Replace lamp in tv get bright picture, please buy Sony original lamp for good picture in tv.

Jun 17, 2010 | Sony Grand WEGA KF50WE610 50" Rear...

1 Answer


Ur tv might need the picture bulb replace,how long this tv had it bulb been replaced?

Sep 29, 2009 | Sony Grand WEGA KDF-55XS955 55" Rear...

1 Answer

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.

Aug 22, 2009 | Sony Grand WEGA KF60XBR800 60" Rear...

1 Answer

Chage bulb tv is still dark

The wrong or faulty lamp may cause darkness

Apr 21, 2009 | Panasonic PT-52LCX66 Projection Television

1 Answer

SONY rear projection 40" rear projection. It was in full working order untill recently when the picture went very dark. Adjustments to the brightness and contrast make very little difference.

You may have already found your problem since it is now mid January 2009, but we had the same thing happen t our 50 inch Grand Wega.  You will need to replace the light bulb.  Ours was still under warranty and was sent out to us for free.  The owners manual shows how to replace the bulb and also has the contact numbers for service.

Aug 14, 2008 | Televison & Video

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Same problem as this poster

i had a similar problem and it ended up being the bulb. The indicator light never lit up but after i replaced th bulb I checked to see how many hours where on the bulb and it was over 8100. they state the bulbs are only good for 6000. when i replaced it ($140 on ebay) everything was fine.

Sep 09, 2007 | Sony Grand WEGA KDF-55XS955 55" Rear...

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