Check to make sure your power supply is rated to handle the current draw from the camera. You can also use a regulated power supply to correct this problem. This problem usually occurs when incorrect lighting is used on some of our color cameras. Especially PC33C and PC27C cameras. These cameras operate optimally with fluorescent or outdoor lighting.
Incandescent lighting causes color bands to appear in the image.
These bands will roll across the screen and are usually blue or green hues. Grainy picture Not enough illumination Color cameras require more light to produce a decent image than monochrome cameras. The only way to resolve this issue is to add more illumination. If it is a color camera, you will need to add visible light. If you are using a monochrome camera, you may use infrared illumination which will illuminate more without adding visible light.