Vertical lines on AMH A399u

Hey thanks for the info ! I suspected that possibility but had no idea how to check; it is the panel input interface ?
both power and signal ?

Good new from Wendell (more or less) !now just have to start the rma process!

Very likely a problem by some cable. But now the thing is: which cable? I have the same problem with laptop panel.

Hey ! Best Wishes; and how is the troubleshooting going ?
Did you progress in any way ?