I had a screen issue, it would turn on, but flicker and the ribbon was clearly the issue (loose and scratched), so I ordered a replacement to fix it. (I service tech lots of equipment.) Is there a flash or reset you need to do for the screen after replacement? It lights the backlight up, but will not show visually on screen. I noticed there were reset buttons on the PCB. Any help would be great. The rest of the unit works just fine still and shows power up. I cant do anything without the screen though.