It's the worst feeling when you notice this little imperfection on your beautiful TV screen, as it ends up distracting you from watching the bigger picture and thoughts can start creeping in about sending it away for repair. Before you do, it's best to find out if it's a dead pixel or if it's just stuck.
This usually happens from a transistor fault - responsible for carrying current which lights up the pixels on the screen. When this occurs the pixel will usually look out of place or turn into a grey or red colour. When the pixel goes white, it's called a Hot Pixel and can usually be fixed in the same way as a stuck pixel. Even if the pixel is blacked out and appears to be a dead pixel, it's always best to try the following steps:
For a lot of people, the most effective method of fixing this is the pressure technique. First, turn off the TV screen and then gently rub the area on the screen that has a stuck pixel with a micro-fibre cloth. While doing this, turn the screen back on again and after a few seconds remove pressure.
Please Note: You can cause damage to the screen, which can invalidate your warranty so take caution. Also, only apply pressure to the stuck pixel as it may cause other pixels to become stuck.
- If the above step hasn't solved your problem, you might want to try running software which can detect and attempt to fix the stuck pixels. There are a few well known sites such as, JScreenFix, UDPixel and PixelTuneUp.
The dreaded dead pixels are pixels that are permanently black, with no light behind them. Before assuming the worst, try following the steps above to make sure they are not just stuck pixels. If the pixels are still blacked out, you'll have to send your TV off for repair.
Each manufacturer and insurance policy has different guidelines on how many dead/stuck pixels there needs to be on the screen before they will fix the problem or replace the display. For example, Samsung state that if you're in warranty you need to have at least two hot/dead pixels per one million, and at least five stuck pixels per a million. The easiest way to spot a dead pixel is by looking for them on a white background.
If you need further help, the Knowhow team offer a TV Repairs service