2015 Macbook 15 Retina Melted near power input and i/o board

I believe I figured out that the melted substance is the black silicon gasket at the bottom of the screen that has run into the lower board area.

Looking at the pictures upside down, sorry that's the I/O board side with the SD reader and usb and burnt sticky rubber residue all over that side. Whatever the case, its not liquid from water, coke, etc... the liquid is from whatever melted inside the case. These pictures were sent to me from the shop when I asked to see the damaged components, I know it wasn't moisture and when I asked them if the moisture sensors indicated moisture they said no. Sorry guys it aint moisture its burnt plastic or silcon rubber and the residue that is circled is from the caustic smoke and fumes scaring the board and metal not moisture.

Did some more research looking at some videos of teardowns of this model there is a black rubber pad sitting right near the heatsink for this fan which from pictures shown to me by the authorized.repair center is mysteriously missing.... WHAT! That thing no doubt melted and ran down the fan on both sides and that is how this mac was fried. The black goo stuff is the remains of the melted pad not water, coke, or coffee. Moreover when rubber materials melt they exude oils and is why that board and wire guide have an oily appearance.

Looks like it might melted plastic from the wire insulation as well and I think see overheated shrink wrap on that cable. When shrink wrap melts it also exudes oil and as does plastic insulation and think I see some burnt wire insulation that has crumbled off. My daughters an artist I wonder if this and graphics gets to hot when editing video or other graphic editing.