Question about Samsung HP-S4233 42 in. Plasma Television

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Pixel Problem I looks as though the pixels are messed up. We had a diagnostic done on it and they said it looks like we have to replace the motherboard. The picture does not show although the t.v turns on. It's hard to explain. I was wondering if anyone knows where to find a motherboard for the t.v. Would you suggest I try to repair it myself?

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Getting a black spot on one corner of picture. Any suggestions why this is happening?


It is not unusual for a camera's sensor to have a pixel fail this way. Most sensors consist of 100's of thousands or more pixels that make up the sensor. Each responds to the color and intensity of the light projected upon it by the lens. It sounds like a pixel on your sensor has failed and is "dead" or "stuck" in a dark state. Pixels can fail "hot" on a single color, too.

The bad news is that it is not possible to fix a stuck pixel. The sensor itself is the smallest replaceable part and is often times not worth the expense of replacing. Compare costs of replacing the part vs the cost of replacing the camera and decide which way to go to be sure.

I did see some Minolta specific info that you might want to look at first here.

The good news is that there is software that will allow you to mask the pixel. Google search for "stuck pixel software" for a list of results. The software analyzes the pixels around the non-functioning pixel, and makes it a color that is far less likely to be noticed. Other software may perform functions that restore functionality to the pixel and others still that do something else. I am unsure of how well the former methods work or how long they might work. Software that changes the output file is the type I used and it seemed to work well. Each file needed to be run thru the software to make the change however.

Good luck!

Sep 12, 2013 | Konica Minolta DiMAGE Z3 Digital Camera

1 Answer

Can dark smudged look on screen be a pixel issue?


Might be. Contact any service technician and make it confirm.

Apr 29, 2013 | Sanyo DP46849 46 in. HDTV

1 Answer

Change to resolution after picture taken


Sorry, can't be done. Those pixels weren't recorded, so there's no way to regenerate them.

Think of it this way. Suppose you look out the window and see a red car drive by. Look out the window an hour later and maybe a blue car drives by. Now, how many white cars drove by between those two cars? If you weren't looking (or had a surveillance camera), there's no way to tell. In your picture you've got a red pixel over here and a blue pixel over there. There's no way to tell what was in between.

There are some tricks that can be done to interpolate. If you have a bright red pixel and next to it a dark red pixel, then the pixel between them probably was a medium red. But maybe not: there could have been a blue object in between. Or the pixel in the middle might have been the same color as one of its neighbors. There's just no way to be certain.

Mar 30, 2013 | Nikon Coolpix S800c - Digital camera -...

1 Answer

I have a problem with the picture on my Infocus IN1501. It has small squares on it and I see every pixel. How do I remove this?


Generally the screen is full of pixels, and thats a good thing.
It's a problem when you see the pixels that should be off, and don't see them when they should be visible.

So I presume that your pixel problem may be the first type where they appear when they should be hidden.

Now it would be good to know if the bad pixels are all one colour, or if you have chromatic pixelation problems.

Monochrome pixel problems are better than chromatic pixel problems. But alas all pixel problems come back to the DMD or the colour wheel.

Either way your machine is basically compost material for the garbage shredder, unless you want to pay big money to replace the faulty bits.

Ask the local serviceman or servicewoman to give you a quote to look inside the unit and see where the pixels have gone astray.

Mar 17, 2011 | InFocus IN1501 DLP Projector 3000 Lumens...

1 Answer

Can i download pixel and vertex shader?


Pixel and vertex shaders are operations the video card may be capable of, sometimes the hardware is capable but the driver or directx are old and don't support this features. Check if your video card has pixel shading by looking at its specs in the manufacturer site, if it is update drivers if it is not you're out of luck. Though it is possible to do do shading by software, if this operation is not hardware accelerated makes the rendering very expensive time wise an thus slow.

May 14, 2010 | Eidos Interactive Ancient Wars: Sparta for...

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

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

2 Answers

Have a blue pixel that won't go away


One pixel is not repairable unless the plasma dislpay panel is replaced. That would be too expensive for that.

Dec 07, 2007 | Protron PLTV-32 Television

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