The volume/power button cable is attached via solder pads with small holes that go through the cable and attach to flat pads on the face of the logic board. In this step, you will heat each solder pad individually while using a metal spudger to pry it up from the logic board.

DO NOT bridge the connection between the solder pads both on the board and on the ribbon cable with your spudger. Shorts have the potential to ruin the logic board.

Beware of overheating the board and the cable. Only hold the tip of the iron against the pad long enough to let the solder melt. Excess heat buildup has the potential to ruin the logic board or melt the ribbon cable.

Start working from the outside of the ribbon cable. Heat the outermost solder pad while gently prying up from under the ribbon cable to free it from the board. Repeat this process for each of the three remaining pads, working from right to left.