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I think I have a (or several) dead pixels on my Acer 24" Monitor (Model Name: HA240Y Part Number: MM.T97SI.001)

Their policy says:

Dead Pixel Warranty Policy
The table below shows the allowable number of dead sub-pixels for the native resolution of the LCD panel. Your display can be replaced during the duration of the limited warranty period if the number of dead pixels is greater than the allowable number.

General policy:    
Native Resolution   Bright Sub-Pixel    Dark Sub-Pixel  Total Sub-Pixel
FHD     1920*1080   ≤ 2                 ≤ 5             ≤ 5

How can tell if I'm above ≤2 ≤5 ≤5?

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  • Send it back, let Acer determine that.
    – Moab
    Commented Oct 4, 2020 at 15:28
  • You manually count dead pixels. Is the real question "how to spot them?" or "how to make them show themselves?"? Or maybe "what is the difference between 'bright' and 'dark'?"? Or what?
    – Kamil Maciorowski
    Commented Oct 4, 2020 at 15:28
  • There's a reddish dot that keeps being detected as a dead pixel. So is that above ≤2 ≤5 ≤5. How do I determine that?
    – Norman
    Commented Oct 4, 2020 at 15:45
  • So "how to tell how many pixels belong to a dot?", right? Or "what does the ≤ symbol mean?"?
    – Kamil Maciorowski
    Commented Oct 4, 2020 at 15:50
  • Umm.. yes. I didn't know how to phrase that question.
    – Norman
    Commented Oct 4, 2020 at 15:51

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