Hello to everyone here. I wanna ask for advice from you guys.

My Dell 2007FP, which I bought last year, begin to show dead pixels at the upper right edge of the screen. I would like to call Dell to replace it. Mine is a S-PVA panel.
I would like to know whether Dell still uses S-PVA/S-IPS for 2007FP or they have changed to low grade TN panel? If it is TN panel, I would rather not changed it.