Chosen Solution
I replaced the LED screen. Now the power button doesn’t work. AC adapter is fine. Battery is fine. The power button actually worked a couple of times, but not now.
vjlanter, the switch is a magnetic sensor activated by a magnet in the LCD bezel. The power from the motherboard to the Inverter, is cut off when the Display Switch Module is depressed. Use a magnet and swipe it sound the outside bezel of your laptop. You should feel when the magnet reacts to the one in the cover. Now you have the position in the lid. Move the lid to the close position, wherever the magnet position of the LCD cover meets the bottom case, is where the sensor should be located. It is entirely possible that you dislodged the magnet when you replaced the LCD. On some of the older models it was about an inch from the right hinge. Hope this helps, good luck.
