Not to come off as rude but is this even a repair? i see this more as something everyone with a laptop will know especially those that carry multiple with them to prolong work time. it feels a bit like "Screen black? press on button"
Would something like the iopener work for that? Have had just about every model bar the original ks edition so im not sure myself.
The rumble pack ( Circle silver bit on the bottom right ) is glued to the top of the backplate. Use a spudger to ply it from there as you could damage the cord connected to it if you pull it away with the backplate.