I plucked the silicon off the LCD Mylar flexcable that goes directly to the LCD and reseated the cable, booted up the scope and the display is now back to normal see the pic.
Not sure what silicon you mean.
There usually is a fabric retaining tape to prevent accidental dislodgement for these ribbon cables.
IME it lifts cleanly and is placed above the tinned and exposed area of the cable and adheres to the socket. Lifting it can be a little tricky, I use a tiny screwdriver or the blunt side of a scalpel blade.
Anyways, you have it going.
Pic of new factory supplied display ribbon cable as below.
~75mm long.