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So you always buy Class I monitors, guaranteed zero dead pixels, not the affordable Class II monitors with up to 15 dead pixels? [1] [1] https://en.wikipedia.o

So you always buy Class I monitors, guaranteed zero dead pixels, not the affordable Class II monitors with up to 15 dead pixels? [1] [1] https://en.wikipedia.org/wiki/ISO_13406-2#Pixel_Fault_Classes https://en.wikipedia.org/wiki/ISO_13406-2#Pixel_Fault_Classe...

mort96 4y ago
I must admit, I don't pay attention to that. But my monitors don't have dead pixels, and if they had dead pixels, I would absolutely consider that a defective monitor. The class presumably just determines whether I can get the manufacturer to fix it for free or not.
- DougMerritt 4y ago
  Yes, but they're also choosing the monitors that pass QA best. It may be that all of their monitors have zero defects, but that is statistically unlikely. Look at chip manufacturing. They really care about high yields, but there are always defects, 20 years ago and today as well. It's an issue with manufacturing in general. Perfection is typically impossible to achieve. Maybe not always, but typically. Back to the main issue, since modern monitors are quite high resolution, you and I might both have a few dead pixels, or more likely a few that have pixels that are half-dead (dim) in one channel (of red/blue/green), and we just don't notice on our desktops -- and it would usually take careful examination to spot them even on a pure white screen. Your mileage may vary, of course.
  - mort96 4y ago
    Dead pixels which are just dimmer than usual is okay, some variance is expected. But if a monitor has that kind of dead pixel that's stuck displaying a bright white or green or something even when the rest of the screen is black, the screen is 100% defective, whatever the manufacturer's QA standards might say.
- sroussey 4y ago
  As an EE, I’m shocked computers work at all, and so reliably. If you knew how the sausage was made you would be horrified.

mort96 4y ago

I must admit, I don't pay attention to that. But my monitors don't have dead pixels, and if they had dead pixels, I would absolutely consider that a defective monitor. The class presumably just determines whether I can get the manufacturer to fix it for free or not.

DougMerritt 4y ago
Yes, but they're also choosing the monitors that pass QA best. It may be that all of their monitors have zero defects, but that is statistically unlikely. Look at chip manufacturing. They really care about high yields, but there are always defects, 20 years ago and today as well. It's an issue with manufacturing in general. Perfection is typically impossible to achieve. Maybe not always, but typically. Back to the main issue, since modern monitors are quite high resolution, you and I might both have a few dead pixels, or more likely a few that have pixels that are half-dead (dim) in one channel (of red/blue/green), and we just don't notice on our desktops -- and it would usually take careful examination to spot them even on a pure white screen. Your mileage may vary, of course.
- mort96 4y ago
  Dead pixels which are just dimmer than usual is okay, some variance is expected. But if a monitor has that kind of dead pixel that's stuck displaying a bright white or green or something even when the rest of the screen is black, the screen is 100% defective, whatever the manufacturer's QA standards might say.
sroussey 4y ago
As an EE, I’m shocked computers work at all, and so reliably. If you knew how the sausage was made you would be horrified.