White spot on screen

If it is out of warranty If it is out of warranty

Whos solution worked for you? Whos solution worked for you?

The only possibility I can see for a projection tv to have a white spot on its screen are



Light entering back of screen, and being repflected on to screen



It could be due to electrical interference, from internal or nearby sources



Outside light source ie window/lamp reflection being seen on screen surface.


The only possibility I can see for a projection tv to have a white spot on its screen are

Light entering back of screen, and being repflected on to screen

It could be due to electrical interference, from internal or nearby sources

Outside light source ie window/lamp reflection being seen on screen surface.

DLP technology explained...





DLP (Digital Light Processing) technology utilizes a small digital micromirror device (DMD) to tilt micromirrors less than the size of a human hair in width toward or away from a white lamp inside the DLP television. This process creates a light or dark pixel on the face of the projection screen, depending on how much light is reflected by the mirror. Each mirror can turn on or off several thousands of times per second, so this technology can reproduce 1024 shades of gray. There are four main components in the system: the DMD chip, the color wheel, the light source, and the optics. Light from the lamp passes through a color wheel filter and into the DMD chip, which will switch its mirrors on or off in relation to the color reflecting off them, producing an image.

Whether spread across a flat-panel screen or placed in the heart of a projector, all LCDs are pretty much the same. A matrix of thin-film transistors (TFTs) supplies voltage to liquid-crystal-filled cells sandwiched between two sheets of glass. When hit with an electrical charge, the crystals untwist to an exact degree to filter white light generated by a lamp behind the screen (for flat-panel TVs) or one shining through a small LCD chip (for projection TVs). LCD monitors reproduce colors through a process of subtraction: They block out particular color wavelengths from the spectrum of white light until they're left with just the right color. And, it's the intensity of light permitted to pass through this liquid-crystal matrix that enables LCD televisions to display images chock-full of colors—or gradations of them. DLP technology explained...


DLP (Digital Light Processing) technology utilizes a small digital micromirror device (DMD) to tilt micromirrors less than the size of a human hair in width toward or away from a white lamp inside the DLP television. This process creates a light or dark pixel on the face of the projection screen, depending on how much light is reflected by the mirror. Each mirror can turn on or off several thousands of times per second, so this technology can reproduce 1024 shades of gray. There are four main components in the system: the DMD chip, the color wheel, the light source, and the optics. Light from the lamp passes through a color wheel filter and into the DMD chip, which will switch its mirrors on or off in relation to the color reflecting off them, producing an image.
Whether spread across a flat-panel screen or placed in the heart of a projector, all LCDs are pretty much the same. A matrix of thin-film transistors (TFTs) supplies voltage to liquid-crystal-filled cells sandwiched between two sheets of glass. When hit with an electrical charge, the crystals untwist to an exact degree to filter white light generated by a lamp behind the screen (for flat-panel TVs) or one shining through a small LCD chip (for projection TVs). LCD monitors reproduce colors through a process of subtraction: They block out particular color wavelengths from the spectrum of white light until they're left with just the right color. And, it's the intensity of light permitted to pass through this liquid-crystal matrix that enables LCD televisions to display images chock-full of colors—or gradations of them.