How to fix defective pixels – A quick fix guide



Finding a dead pixel on your gadget’s or your monitor’s screen is pure mental torture. And there’s no better way to escape frustration than by getting rid of the problem. However, before you settle for repairs or shelling your cash for an LCD replacement, you can try one of these possible solutions. The fix is not guaranteed to bring the dead pixels back to life, but trying it won’t hurt, right?

So, before we start the technical procedures, I would like to make a point on what is the difference between a dead pixel and a stuck pixel. Technically, every pixel is made up of three (3) sub-pixels, red, blue, and green. Together, all of the sub-pixels are behind the rich and colorful display.

A stuck pixel is a pixel that remains always ‘on’. In short, when colors red and blue are turned off and the green is still active, you got a stuck pixel. It does not change, even if you change the image. Also, it may only show when you open a certain app, or it may be ‘on’ permanently.

Meanwhile, a dead pixel has all the sub-pixels always ‘off’, which makes it always black. Also, chances of dead pixels fixing themselves over time are really low, unlike those for stuck pixels.

How to spot a dead pixel and stuck pixel?

For devices with camera

  1. Clean the LCD from any dirt, so it won’t cause false detection.
  2. Go open the camera app. Activate the main camera.
  3. Use your hands to cover the camera.
  4. The whole screen will display black. When you find a pixel that doesn’t match with the other pixels, it is a stuck pixel. Technically, the color may vary, depending on the nature of the stuck pixel.
  5. This procedure can also spot a dead pixel.

For laptops and desktops

  1. Download and install the application. Get it here.
  2. Follow on-screen instructions for a proper screen test.
  3. Start by zapping various screen tests.

For MAC users

  1. Download and install the application. Get it here.
  2. Follow on-screen instructions to cure bad pixels.
  3. Start screen test.

How to fix dead pixel and stuck pixel

For windows


  1. Download and install PixelHealer here. The software is free and it is easy to use.
  2. Open the PixelHealer software.
  3. You’ll see a button that says “start flashing” and a small colored test window. The trick here is to drag the test window where the dead/stuck pixel is located. After dragging the test window to the affected area, you can start the repair by hitting the “start flashing” button.
  4. If you have epilepsy, please turn away from the flashing screen, to avoid attacks. The application will bombard quick flashing colors of blue, red, black, white and green. This procedure is like defibrillation, it shocks dead and stuck pixels, and it has a 50:50 chance to bring them back to life.

Web-based fix for all platform (windows, iOS, android, etc.)

1. Go to JScreenFix website here.

step-2a2. Click “Launch JScreenFix” to start the fix.


3. Drag the small test window to where you spot the bad pixel.
4. Wait for 20 minutes, then check if it fixed the issue.

Dead Pixel Detect And Fix app work well on Android


  1. Download and install the free application from Google Play here.
  2. Again, before commencing, please turn away your sight, if you have epilepsy. The procedure might cause seizures, so please be careful.

3. Tap “Fix it”, and the fix will begin.


Hands-on pressure method

This procedure requires control. Applying too much pressure could ruin the device’s screen. Proceed with caution.

  1. Locate the bad pixel, then clean the screen. Remember the spot where the dead pixel is.
  2. Turn off your device or monitor.
  3. You will need a pen or pencil with a narrow end.
  4. Wrap the tip of the pen or pencil with a cloth.
  5. Gently apply pressure on the spot where the dead or stuck pixel is located. Do not press it hard!
  6. Simultaneously, turn on the device, while applying the pressure.
  7. Check out the screen, to see if it fixed the issue.

You can use this to fix bad pixels on large screens

Repairing dead pixel on a car navigation monitor

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