I protected the LCD screen itself with a silicon baking mould (not sure if that was necessary!) Heat the part of the ribbon cable that attaches to the pcb. I gave it 10 secs with a small heat gun.

Apply pressure to the area - You want to avoid puncturing the shiny protective cover-tape but to compress and hopefully re-connect the tiny terminals underneath. There are about ten of them, so i used the sharp end of a spudger and rubbed back and forth parallel to the ribbon