Hakko 850d repair pins 10 and 11 on display board ?

[Wsander12]

I'm trying to figure out what pins 10 and 11 are and where I can run jumpers to on the back of the display board because the corner there broke off so I'm trying to figure out where those pins connect to on the board. Unfortunately I have to repair this because parts are very scarce even finding a heating element that fits this is difficult.