Chosen Solution
1/2" square black image appears on Lcd Monitor and in pictures. It looks like a piece of dirt on the lens but it will not wipe off, it must be on the inside.
We had an issue like this with one of the cameras here. Sure enough, as Majesty has said, it was a small speck of dirt on the sensor. Compressed air is a fine solution. They also make a cleaning solution for cameras for just this purpose as well.
I would carefully open the camera up and clean the insides with compressed air. You might have dirt or other small debris on the sensor. Don not try to wipe the lens, most likely the debris is inside of the camera.
yes clean the sensor(CCD) 10000% clear ur fault i have clear this fault many time
