I’ve had two items malfunction on me recently.
I have a Canon S2 IS camera, and was surprised to be presented with a black screen upon powerup. So far, this happens intermittently, but the discussion available via search indicates that soon it will only show a black screen and record completely black images. The problem is well-known for this piece of gear and relates to the failure of a connection between the sensor and the rest of the electronics.
I also have a Samsung SC-D353 mini-DV camcorder, and was unpleasantly surprised to discover that its fold-out LCD screen now only displays white when deployed completely. I can see that there is an image displayed at just the angle where the LCD screen activates, but any further angle causes it to switch to just a white screen. I suspect a connector failure here, too.
I guess I’ll be finding out just what sort of support is available from the manufacturers in each case. Other people have reported receiving free repair of the S2 IS camera sensor problem from Canon even though the gear has been out of official warranty periods. Both of my problem items are likewise out of warranty.