I have an older Panasonic Lumix (DMC FZ35) that has worked well for 7 years. Today I found that every time I half-pressed the shutter button to focus, it took the picture without letting me compose or focus (it did attempt to autofocus on something before shooting, it just didn't let me adjust my aim or anything). This happened on full automatic, partial manual, and full manual settings. Searching has turned up a few similar issues but usually with new cameras and the advice is return it. That is not possible in my case.
I already did a factory reset in case some setting had gotten messed up. Any suggestions for solving this problem? Or advice on how to live with it if I can't? A new camera is not an option at the moment.