I currently own a Canon NTSC ZR85 Digital Camcorder, and it used to work just fine. I havent used it for probably 3 months, and when I turned it on to use, nothing shows up on either the viewfinder or the LCD screen. It’s just black. It will still record and take pictures as usual, but you cant see anything. What could be the problem?

The Sony “Handycam” DCR-H28 camcorder is brand new and on the easy mode (mostly automatic settings) was recording perfectly with great picture when all of a sudden in the middle of filming the picture went from clear, perfect picture to an extremely blurry picture with only colors, not objects being visible. The only button I touched was zoom, which I had done earlier while recording without problem and ever since the sudden change from good picture to unusable picture, no matter what zoom the camera is on the picture is still terrible. I thought focus might be the issue but on autofocus the picture was still terrible. Even after I pressed the reset button, which the guide said would restore all original settings, the picture was still blurry and awful. What can I do to fix my problem?