You have to be careful to not touch the capacitors (they are the little barrel looking things) because they still might have some power left in them, and may shock you,
technic service said was motor the motor inside broken , and thats why lens are not opened,whot do you think,i change the entire lens can fix the problem
I think i got it at Home Depot. Its a great screwdriver because it has interchangeable ends. In this video i only used the smaller end of it but a bigger handle can be attached to it, check out this website to see it. I put the link to it in the video description.