Question about Samsung SyncMaster 740N 17" LCD Monitor

1 Answer

Red pixels on the Srceen

When i start my PC on the screen where there is black background color their I see all black color replaced with small - small red pixels ....
I have adjust and done all possible method on Menu(Setting) panel for removing red pixels.. but i find no solution for it ..
Currently i have given my LCD to service center for repair .. (Today is 14 days gone given to service center) If any one know whats the problem then plzz suggest some solution ...

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert whose answer gotĀ voted for 20 times.


    An expert who has answered 20 questions.

  • Expert
  • 77 Answers
Re: Red pixels on the Srceen

Dead or stuck pixels are not uncommon in LCD displays, and the less you pay, the more likely it is to happen (as a general rule) Most manufacturers will a dead pixel warranty, ranging from 7 days to lifetime.

Read your warranty carefully, and speak to the place where you bought your display.

I hope that helps, if you have any further problems, please add them ass comments to this question. If I have been able to answer your question (or not) please click on one of the ratings buttons to let everyone know how I did.
Thanks for your feedback, and good luck.

Posted on Jan 14, 2008

1 Suggested Answer

  • 5 Answers

SOURCE: On the Screen Red pixels comes in the background

if you are see red pixels then your monitor haveing LCD Panel problume.

Posted on Jan 14, 2008

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

The screen turns green after playing videos for 20 minures

The Video Controller works off of the RGB principal. RED/Green/Blue pixels. The mix color is dependent on the formation and density of the pixel and rates. When one or more colors are absent the only functioning color will dominate, and it is Green in your case. The screen liquid crystals in Red and Blue are failing and only a screen replacement will fix the situation.

Jan 04, 2015 | Toshiba C655D-S5200 Amd Dual-Core C-50 3Gb...

1 Answer

When i start my PC on the screen where there is pink background color their I see all pink color replaced with small - small red pixels .... I have adjust and done all possible method on Menu(Setting)...

Pink and pink streaks are a sign that the CCFL lamp is about to fail. The CCFL lamp provides the backlight to the monitor.
To confirm that the monitor is faulty and not the video card, connect a different monitor to your computer.
To replace the CCFL lamp requires removing the front screen bezel, removing the LCD screen from the frame and the reflector which is located on the bottom edge of the LCD screen. The CCFL lamp is located inside the reflector and the electrical wires on the ends of the CCFL lamp are connected to the inverter board.
Replacement parts are available from these WEB sites.
LCD screens and Inverters

May 14, 2011 | Samsung SyncMaster 740N 17" LCD Monitor

1 Answer

My ACER Monitor shows green striped pixels wherever there is BLACK colors on the screen. Eg: Shadows in a video game, wallpaper with black background. It happens on and off, but the more it happens the...

The problem is either the video graphics card in the computer or the monitor, if you have a backup monitor check the computer first, if the same problem persists the video graphics card is bad. If however the second monitor is fine, then your monitor is the problem, The screen is breaking down, if you have a detachable video cable, sub it for another to make sure there are no issues,if okay your monitor is the problem and not cost effective for repair.

Jan 03, 2011 | Acer V193 Monitor

1 Answer


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.


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

1 Answer

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

SyncMaster 213T Screen quality

did you try change the VGA cable? if not, try it.

Dec 19, 2009 | Samsung SyncMaster 213 T 21.3" LCD Monitor

1 Answer

Red stripes on the screen when choosing a 1280 x 1024 resolution and 32-bit color depth.

640 x 480 resolution means that the screen is 640 pixels wide by 480 tall, ... With the exception of one resolution combination (1280 x 1024 uses a ratio of 5:4), ... A black and white monitor uses 1-bit color depth (2 to the power of 1): ... 5 bits for red, and 6 bits for green, giving 32 different intensities for ...

Dec 06, 2009 | Samsung SyncMaster 740N 17" LCD Monitor

1 Answer

Lcd tv with wrong color on one pixel

LCD screens occasionally have what are called "Stuck pixels". There is a tutorial in wikihow which might help you out here:

Try that and see if it helps. Stuck pixels are actually a slighty common problem.

Jan 01, 2009 | ViewSonic VA720 17" LCD Flat Panel Monitor

2 Answers

Dead pixel

Please read the WHOLE of this guide before starting. Software Method
  1. Try running pixel fixing software. Stuck pixels can often be re-energized by rapidly turning them on and off. If this fails, complete the following steps.

Pressure Method
  1. Turn off your computer's monitor.
  2. Get yourself a damp washcloth, so that you don't scratch your screen.
  3. Take a household pen, pencil, screwdriver, or some other sort of instrument with a focused, but relatively dull, point. A very good tool would be a PDA stylus.
  4. Fold the washcloth to make sure you don't accidentally puncture it and scratch the screen.
  5. Apply pressure through the folded washcloth with the instrument to exactly where the stuck pixel is. Try not to put pressure anywhere else, as this may make more stuck pixels.
  6. While applying pressure, turn on your computer and screen.
  7. Remove pressure and the stuck pixel should be gone. This works as the liquid in the liquid crystal has not spread into each little pixel. This liquid is used with the backlight on your monitor, allowing different amounts of light through, which creates the different colors.

Tapping Method
  1. Turn on the computer and LCD screen.
  2. Display a black image, which will show the stuck pixel very clearly against the background. (It is very important that you are showing a black image and not just a blank signal, as you need the backlighting of the LCD to be illuminating the back of the panel).
  3. Find a pen with a rounded end. A Sharpie marker with the cap on should be fine for this.
  4. Use the rounded end of the pen to gently tap where the stuck pixel is - not too hard to start with, just enough to see a quick white glow under the point of contact. If you didn't see a white glow, then you didn't tap hard enough, so use just slightly more pressure this time.
  5. Start tapping gently. Increase the pressure on the taps gradually for 5-10 taps until the pixel rights itself.
  6. Display a white image (an empty text document is good for this) to verify that you haven't accidentally caused more damage than you fixed.

  • If the pressure and tapping don't work directly on the stuck pixel, start moving outward around the stuck pixel. If you see the pixel flicker while doing this then you know where you can focus the pressure and tapping techniques rather than directly on the pixel.
  • Many people report success with this technique but these instructions won't work in every case. It may take a few attempts to make sure you are pressing exactly on the stuck pixel.
  • These instructions will fix "stuck" pixels, not "dead" ones. Dead pixels appear black while stuck pixels can be one constant color like red, blue or green.
  • An alternative, but similar technique involves gently massaging the stuck pixel with a warm damp (not wet) soft cloth.
  • Alternative technique to tapping: Using a rounded pencil eraser, push with moderate pressure into screen at stuck pixel.
  • If these instructions don't work, you can hopefully get the monitor replaced through your manufacturer. If your monitor falls under the specifications of replacement, get in contact with the manufacturer to set up replacement plans.

  • Do not attempt to open the monitor as it will void the warranty and the manufacturer will not replace it.
  • Make sure you don't get any electrical equipment wet or it may break.
  • Some people claim that touching the screen can cause more pixels to become stuck, although this has not been proven.
  • Be prepared to suffer a complete loss; you may crack the glass when tapping or putting pressure on an LCD assembly.
**Rytech assumes no responsibility if you cause futher damage to your product whilst following this guide. If in doubt, contact authorised service personell**

Jun 20, 2008 | HP Compaq WF1907 Monitor

1 Answer

On the Screen Red pixels comes in the background

if you are see red pixels then your monitor haveing LCD Panel problume.

Jan 14, 2008 | Samsung SyncMaster 740N 17" LCD Monitor

Not finding what you are looking for?
Samsung SyncMaster 740N 17" LCD Monitor Logo

151 people viewed this question

Ask a Question

Usually answered in minutes!

Top Samsung Computer Monitors Experts

Rugeshan Lanka
Rugeshan Lanka

Level 1 Expert

15 Answers

Pieter Vleeshouwers

Level 3 Expert

1333 Answers

Lawrence Oravetz

Level 3 Expert

7235 Answers

Are you a Samsung Computer Monitor Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides