screen will not turn on

girlfriends series 2 iwatch the screen wasnt turning on.

i took the screen off and inspected the ribbon cables and found this (see pictures) i believe one of the contacts on the ribbon is missing?! not sure how that happens.

ive cleaned off the corrosion the best i could on the other picture with the screen side.

is that pin supposed to be missing or do i need a new ribbon and possible screen?

thanks!

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