@brucewadnizak common issue for this could be a stuck lens. Take a look at the front and see if your lens appears cockeyed. Try something like suggested [http://camerarepair.blogspot.com/2007/12/fixing-lens-error-on-digital-camera.html|on here] Ultimately it does sound like it's time to open the camera up and to take a closer look at the power board, battery connector and DC_DC board etc.
Use these guides [[Topic:Samsung ST150F]] to work on your camera and check this Wiki [[Samsung ST150F Troubleshooting]] for further troubleshooting.
If you encounter odd thing :-0 or need to point anything out, post some good pictures of that with your Question. That way we can see what you see. [guide|21499]