Lens cover stuck open, power wont come on

I had a similar experience - camera had been out of use for some time: the battery has become "tired" i,e. does not hold charge for as long as it should or deliver as much current as it did when new which explains why the most power-intensive action i.e. pushing the lens around is beyond it - the battery indicator was low after a few attempts. Eventually after leaving it on until it switched off and recharging for a day a few times it is working much better, though I will be replacing the battery. I am a fan of good but dated technology, I have to admit.

I have been told by a camera mechanic i contacted on line (in America) that there is a fuse within the camera which is very small and soldered onto one of the boards. I was unable to get a precise location and the only details were that this component was either white with black writing or black with white writing.This may have a bearing on your problem.
Dennis