Dead Pixel Policy
To ensure the highest performing displays, ViewSonic sets limits as to the allowable number of pixel anomalies. ViewSonic has adopted the following pixel criteria to supplement our existing three-year limited warranty. This policy applies to all ViewSonic LCD displays during the warranty period.
ViewSonic sets limits on 14" - 15" LCD's at 4 bright sub-pixels, 4 dark sub-pixels, or a combination of 4.
ViewSonic sets limits on 17" - 19" LCD's at 7 bright sub-pixels, 7 dark sub-pixels, or a combination of 7.
ViewSonic sets limits on 20" & greater LCD's at 10 bright sub-pixels, 10 dark sub-pixels, or a combination of 10.
It is possible that any replacement display may also have some non-performing sub-pixels. This should be considered when requesting a warranty exchange.