I have two 10.6 wxga LTN106W2 panels and 1 working controller. One panel works fine. The other is receiving power from the controller but nothing else. When the controller is on the LCD goes all black and when I turn off the controller it goes all white. I can't get the menu or any inputs to work on it. Any ideas?

Are you sure that the non-working LCD was working in the first place? Also, are you sure that they are EXACTLY the same panel? Sometimes even from the same "brand" the panels can be a bit different. ((At least that's what I have read))

yes i'm very sure. it was working one day, next day it decided to stop working. they are both ltn106w2 panels, and both, at one point in time have worked.

Did you pull any of the wiring going to the panel at all? Like torn FCC or anything?

nope. one day it was working. didn't touch it at all, the next day it wasn't working. No idea wut's going on.