No idea. I'd assume not, since within the.. oh.. I guess half a year I've had my L90D+ I've not seen a single dead pixel. However, the first L90D+ I had to return since a column had malfunctioned and caused a gigantic white vertical line to appear on the screen. Thankfully, Hyundai's support is great and they replaced it quickly and with no charge.
Might want to check your warranty and see if it qualifies as a malfunction.
Might want to check your warranty and see if it qualifies as a malfunction.