In the event that the lens cover is not functioning properly, either permanently opened or closed, it is necessary to align it properly on its spring arm.
Locate and remove the silver screws on each side of the camera.
Then, carefully pry apart the front and back outer casing away from the internal components.
Place the internal electronics face-up. Look at the side with the flash turned towards you.
The lens cover is a small sheet of metal that rests directly infront of the lens when the camera is turned off.
Check to see if the spring action arm (what the yellow arrow is pointing to) is attached to the lens cover with the small knob in the corner (circled in yellow).
If the arm is not attached (as shown in the previous), use tweezers to place the arm over the knob on the lens cover.
Inside the yellow circle, the arm is in the correct position.