I would inspect the LVDS cable and its connections on both the main logic board as well as the panel side as often I find the connections are corroded up.
[image|2347774]
[image|2347775]
I would then check the logic board for corrosion as well as look for a cold solder joint around the driver chip and the components around it. You may want to check out the voltage on a scope to see if its jumping around referencing the schematics and board views.