I think he was referring to long screw damage on the board where the screw holes reside near the screen connectors.
That is really hard to solder to reconnect the broken traces caused by long screw damage even under a microscope so only experienced micro-solderers can repair this.
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Edit: You would have to complete each broken track. The problem is knowing which one goes where as the schematics / board-view font exactly tell you which track is for which line on the board.
I think he was referring to long screw damage on the board where the screw holes reside near the screen connectors.
That is really hard to solder to reconnect the broken traces caused by long screw damage even under a microscope so only experienced micro-solderers can repair this.