Question: how do you fix a window air conditioner that won't turn on?
Answer: If your window air conditioner won't turn on, it may be that the fuse has blown. First verify that you are getting power to the unit and then unplug the unit and remove the cover. Locate the circuit board and check for a removable fuse. If one is found, look for signs that it has blown or use a multi-meter to check it.