Hard reset and Sprite restore, now no GPS

[techguru]

I was having a problem with my screen, and to make sure it was hardware (it is) I did a hard reset. I restored with Sprite backup, and made sure to set Location ON in phone settings, but no GPS apps, including VZNavigator can see any satellites. (VZW stock MR1 ROM).

It could be a hardware issue, after all, my screen is hosed (keeps turning off backlight unless I touch or squeeze right over the Verizon logo) but I am concerned that my Sprite backup somehow over-wrote some critical registry setting or file that somehow is different in the backup. I am getting a replacement phone tomorrow, and wanted to use my backup to restore all my apps to it, but I am concerned I might screw up the GPS again.

Anyone had similar issues after a hard reset and can tell me what I might be missing, or do you agree that my hardware is probably blown and I shouldn't worry about it since I am getting a replacement tomorrow?

Alan