Question about Panasonic PT-50LC13 50" Rear Projection HDTV

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Help!! i have now three dead pixels i beleive. small 2-blue and 1 red. is it fixable? what would it cost?

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When this happened on our unit (it was still under warranty) replacing the lamp fixed the problem. a new lamp unit seems to run about $250 on the web and is easy to replace from front of unit.

Posted on May 27, 2008

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Posted on Jan 02, 2017

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My brand new LG 37' Led/Lcd t.v. had four very light white spots that you can see in the background what causes this?


Hello
Dead and Stuck Pixels
Pixel defects for an LCD monitor are defined as one of two types: dead or stuck. Technically, both types of pixel defects are stuck pixels but it really deals with the electrical currents and the state of each pixel or sub-pixel.
A dead pixel is defined as a pixel or set of sub-pixels that has failed and is permanently in the off position. This condition means that the pixel will not let any light through. This can be observed as a dark or black spot on a brightly colored or white background.
A stuck pixel is defined as a pixel or sub-pixel that has failed and is permanently in the on position. This can be either with a single or multiple sub-pixels for a given pixel and is best observed on a dark or black background. A white pixel means all three sub-pixels have failed while a green, red or blue pixel means one of the sub-pixels has failed.
Hope this helps, if so do rate the solution

Jan 16, 2011 | LG 37LC7D 37 in. LCD HDTV

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Why the white or black spot on LCD Display


Dead and Stuck Pixels <br /> Pixel defects for an LCD monitor are defined as one of two types: dead or stuck. Technically, both types of pixel defects are stuck pixels but it really deals with the electrical currents and the state of each pixel or sub-pixel. <br /> A dead pixel is defined as a pixel or set of sub-pixels that has failed and is permanently in the off position. This condition means that the pixel will not let any light through. This can be observed as a dark or black spot on a brightly colored or white background. <br /> A stuck pixel is defined as a pixel or sub-pixel that has failed and is permanently in the on position. This can be either with a single or multiple sub-pixels for a given pixel and is best observed on a dark or black background. A white pixel means all three sub-pixels have failed while a green, red or blue pixel means one of the sub-pixels has failed. <br /> Hope this helps, if so do rate the Tip

on Jan 16, 2011 | Televison & Video

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What does it mean by dead cells?


I assume this is related to your LCD monitor.
I think you mean dead pixels. The LCD monitor has tiny pixel elements, one for each red, blue, green color and each one of these colored pixels are turnes on by a transistor. When a transistor fails then the colored pixel it controls does not light up. This is a dead pixel and it shows up as a tiny black dot.
If the screen displays a blue screen, a dead blue pixel will appear as a tiny black dot in the blue screen.
You normally would not notice a few dead pixels unless they are grouped together.

Sep 20, 2010 | Hanns.G Corporation HW191D 19" LCD Monitor

1 Answer

Blue vertical line


The lines appearing on your LCD means it has a defect on the screen.

There are 3 types of pixel defect
1) dead pixel - pixel is always off
2) stuck pixel - pixel is always on
3) hot pixel - pixel is on but in red, green, blue or yellow, can also be a light black color

You can try to fix stuck or hot pixels but dead is dead.
1st method, flashing different colors rapidly:
JSScreenfix.com has a great tool. This is their free java applet or you can download it below.

2nd method, applying pressure to pixel:
Damp paper towel, Small stylus or dull pencil.

3rd method, tapping the pixel:
Pen with cover on or another small, blunt object.


If your laptop is still under warranty, get it replaced. If not you are looking at the most expensive part in a laptop to get replaced. (LCD screens on laptop is roughly equivalent to 40-60% of the total laptop cost

Please rate this if it this helps.

Jun 05, 2009 | Compaq Presario M2000 Notebook

2 Answers

My Ibm Laptop r51 has a vertical lines on the screen


The lines appearing on your LCD means it has a defect on the screen.

There are 3 types of pixel defect
1) dead pixel - pixel is always off
2) stuck pixel - pixel is always on
3) hot pixel - pixel is on but in red, green, blue or yellow, can also be a light black color

You can try to fix stuck or hot pixels but dead is dead.
1st method, flashing different colors rapidly:
JSScreenfix.com has a great tool. This is their free java applet or you can download it below.

2nd method, applying pressure to pixel:
Damp paper towel, Small stylus or dull pencil.

3rd method, tapping the pixel:
Pen with cover on or another small, blunt object.


If your laptop is still under warranty, get it replaced. If not you are looking at the most expensive part in a laptop to get replaced. (LCD screens on laptop is roughly equivalent to 40-60% of the total laptop cost

Please rate this if it this helps.

Jun 02, 2009 | IBM ThinkPad R51 Notebook

1 Answer

BLOWN PIXELS


Usually not but in some cases gently massageing the dot(tv turned on or off try both) with your finger may work (dont push too hard)

or put on a channel with static and try

your chances are slim though this is usually a defect in the lcd technology and most manufactures only warranty it for 5-7 stuck pixels

Jan 05, 2009 | Samsung LE32R41BD 32 in. HD-Ready LCD...

4 Answers

Pixel damage


Those small pixels are now damaged not much u can do with it. Some people say you can press on the screen the pixels affected and possiblilty get them to make contact and light back up ( I honestly highly doubt it) If u can live with and not very distracting keep watching it. But if you want to order a replacement, more than likely it will cost more than the TV did when u bought it. If its still under warranty get it replaced if possible.

Jan 28, 2008 | Philips 42MF531D 42 in. LCD Television

1 Answer

Canon 350D photos have a small red dot on them


if the red spot is always on the same place in each picture.... seems like a problem with the sensor ...

The sensor uses three channels to create colour... RED / GREEN / BLUE... one of the pixels for one of the sensors is gone

Nov 01, 2007 | Canon Rebel XT / EOS 350D Digital Camera

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