1980s and 90s compact cameras were generally built down to a price. The internal mechanisms were where cuts in quality were made, plastic drive train gears, membrane shutters, etc. Your L35AF can probably be fixed, it depends how much money and time you want to apply to the problem. If it were mine, I'd open it up to see if anything obvious had fallen out of place, which is the most likely cause. Someone on this forum may have done that and be able to advise on specifics.