I received my PC35AF-M today, and surprisingly, it is in working condition. When I popped open the battery chamber, there were two badly corroded AA's inside, so bad that I had to pry them out with a pair of pliers, and remove most of the spewage with a small screwdriver. After vigorously scrubbing the contacts with vinegar, I popped in a fresh pair, expecting the worst. But I was very pleasantly surprised when the camera (and flash) sprang to life. I had never had similar success with a camera that had that much corrosion before, perhaps Pentax contacts are more robust than those of my paperweight Konicas, Minoltas, and Yashicas?