Dead Screen

This morning my Impression appeared to be off, but upon further inspection I found that the screen is malfunctioning.  It will turn on and off intermittently depending upon the position of the slider.  It behaves like a ribbon cable short.

Have any of you taken your Impression apart and have any insight as to what I should look for?  Better yet - any info on exactly how to go about safely cracking the thing open for inspection?

Or have any of you had this same problem?  And what's the normal warranty period for this phone?

Thanks!