Question about Dell M210X DLP Projector

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Black and white pixels increasing in number in my picture

What is causing the multiple black and white dots on my picture? How do I fix it?

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The DMD chip is failing on your projection device. The only way to fix it is to replace the chip. The dots are usually caused by excessive heat build up.
http://www.youtube.com/watch?v=BYJTF3yZYVY

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Posted on Mar 19, 2014

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1 Answer

Half the screen is black


The white dots are most likely to be failed pixels in the LCD screen. When the picture elements fail, they switch to clear and what you see as white is the backlighting.

The overheating issue in laptops is generally caused by dust and fluff blocking the cooling fins and ducts or a failed cooling fan, but it could also be caused by a hung process which runs the CPU at a high processing speed. Press control (CTRL) ALT and DEL and look at the task manager and see if you can see any processes that are running constantly near or at 100% to eliminate this being the problem.

The failing display is unlikely to be related to the overheating issue.

Mar 17, 2015 | Microsoft Surface RT

1 Answer

Black and white pixels in picture


The DLP chip is failing. The only way to fix the "dots" is to replace the DMD (digital mirror device) chip. Overheating causes this starfield effect to occur. See youtube video for explaination.

Home IPS LaserExpress

Dec 27, 2013 | Dell M210X DLP Projector

1 Answer

White dots on Samsung television. Started with one now there are 20 and increasing more and more in number.


HEY :)
If its a led lcd tv
those are dead pixels which im pretty sure cant be fixed unless you take it back to the shop and they send it off for repair, you shouldn't have to pay for it though

Dec 16, 2012 | Televison & Video

1 Answer

I have nec np200 and there's a lot of dots appeared on the screen. what seems to be a problem


I have 2 NP-200 projectors installed in a school which show white dots on a black background and black dots on a white background. This is caused by the DMD chip losing pixels. Only solution is to replace the chip, I'm researching now if that i an economical solution.

Oct 25, 2012 | NEC NP200 Projector

1 Answer

Has got alot of white dots on big screen tv.what can we do to fix it


white dots, especially if they have gradually been increasing in numbers is usually a defect in the optical light engine, not too many other things will cause this.

Sep 02, 2012 | Televison & Video

2 Answers

A small white dot like spotlight appears on my laptop screen. how to make set it alright.. please do suggest me


Hi there, That Dot is a dead pixel on your Laptop Screen and it cannot be repaired except if you have the screen replaced.
regards,

Jul 28, 2011 | Computers & Internet

1 Answer

White dot on screen


Most likely its a dead or stuck pixel (a dot on the screen which makes up the overall picture).  You can read about it here (Link) .  If its a stuck pixel you may be able to fix it.  That wikipedia article gives some methods of removing it under 'Dead vs Stuck Pixel'.  However if its a dead pixel there isnt much you can do except bring it back to where you bought it if its still quite new or ring the manufacturer if you still have a warranty and try get it replaced.

Mar 02, 2011 | Televison & Video

1 Answer

I HAVE RED DOTS ALL OVER ANY BLACK COLOR OF THE PICTURE


Could be whats known as dead pixels, this is tested be showing up a black or white screen. Microsoft paint or word will do. If an area always has dots then dead pixel. However if it doesn't constantly remain a dot then, some-thing else. Dead pixels come about due to age.
A technician will be able to diagnose your problem by performing white screen test.

damnor01

Nov 17, 2010 | Acer AL1715 (Black, Silver) 17" LCD...

2 Answers

When scanning dots show up in a vertical pattern


Printer DPI and PPI Ratings, General Dots per inch stands for the maximum number of tiny spots of ink that the printer can place in a straight line where the spots are theoretically small enough (i.e. ignoring spreading or smearing effects of ink on paper) that if placed in every other such dot position leaving white space between them, the spots can be individually distinguished. Pixels per inch stands for the maximum number of unique positions in a straight line that the printer can place an ink spot under control from the outside world, namely from a computer connected to the printer. Lines per inch stands for how close thin parallel lines can be printed and still be distinguished in the finished printout. The spaces between the lines count as "lines". Pixels per inch and dots per inch originally referred to the same thing. The printer mechanism was under the direct control of the computer and was physically positioned and placed dots as directed by the computer. Back then, most printer mechanisms were limited to placing dots only in positions suggested by a grid of dots X per inch horizontally and Y per inch vertically, for example 100x100 dpi Nowadays, many printers put dots "wherever they want" as opposed to in positions suggestive of a horizontal/vertical grid. Still there is a minimum dot size and a minimum dot spacing. A picture file (image file) represents pixels in a uniform horizontal/vertical grid pattern. And the printer needs to make a finished picture of the size, say 5x7 inches, that the user chose regardless of the number of pixels in the picture file. To simplify the process of relating the pixel count in the picture file to the possibly non-uniformly spaced dots on the paper, the printer or its supporting software may generate a temporary intermediate picture file with a set number of pixels per inch. The printer may have, internally, several choices of ratio of pixels to dots and the published rating can be the largest ratio except that the published rating may not exceed the dpi rating. Therefore there might be three "per inch" values involved at a given time, the pixels of the original picture file, the pixels per inch that the printer works with, and the dots per inch of the printer mechanism. Pixels per inch is usually not mentioned with printers. All printers come with their own software (including parts called drivers) to install on your computer. Usually the software does not let you exercise control over individual dots using your picture file. Rather the printer takes your picture file or data file and uses its own built in logic to lay down the dots and create the printed output. We are led to believe that a printer's ppi is usually a fraction such as a half or a third of its dpi rating. When a temporary picture file is created, there are at least two levels of software in use. High level software (which may run in your computer) takes your picture file and creates the temporary file. Low level software runs in the printer, takes the temporary file and controls the dot size and dot placement on the paper. Sometimes a printer is advertised using a phrase such as "300 dpi 1200 dpi quality". This means that the printer has some way of making dark edges on a light background appear smoother than the first number would otherwise suggest. A printer with 300 dpi 1200 dpi quality definitely cannot resolve alternating dark and light pixels less than 1/300'th inch each. But curved and diagonal lines and color boundaries should not have jagged edges suggesting individual dots rigidly positioned on a grid with a 1/300'th inch pitch.

Oct 24, 2010 | HP LaserJet 3050 All-In-One Printer

2 Answers

Theres a black dot on the top right side wat can i do to fix it.


Is this a LCD and is it a very small dot ? If the answer is yes to both then it is a dead pixel (a white dot would be a shorted pixel). Most LCD makers wont do anything about this unless a certain number of pixels are bad. The only way to fix this is to replace the whole panel and that will probably cost more then a new tv.

Sep 09, 2009 | Televison & Video

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