I'm going to save you some time and frustration, contact Ken Krane at www.performanceangel.com
or Bob Moon at www.fixmyangel.com
and they will talk you through trying to resolve your issue. It most likely is that the ribbon connector going to your OLED
(just in case you haven't caught on to the fact that it's not an LCD by Doc's and Maddog's posts) is not seated properly, or your display is fried, or a variety of other possibilities. Save some time and CALL
the MT's, there master tech's for a reason.