Catleap uses factory rejects and cheap circuits and I don't think you will have any luck with a warranty claim because the customer support is pretty much non-existent (the manufacturer of the panel does not grant any warranty on a factory rejected panel). Thats why the price is so good. But if you are lucky, you can cheaply snatch a display with the same panel quality as in the $1000 Dell or Apple Thunderbolt Display. It seems that many people who bought the display are happy with it.