6
4. Troubleshooting
Problem
Possible Solution
No video on the
monitor screen
• Check camera and monitor power.
• Check the power polarity.
• Check the video cable connection.
Colour rolling
• It happens when the camera is exposed between
too strong and too weak light.
• It isn’t a faulty problem and please change the
camera position.
The image on the
screen is dimmer.
• Check if the lens is stained. If dirty, clean the lens
with soft and clean cloth.
• The image is dimmer at night than daytime.
If focus is not right, adjust it at daytime.
Black and thick bars
roll and too
noisy on the screen.
• Check the power adaptor capacity.
If the capacity is less than 300mA, please change
it to over 300mA.
• If there are too noise, check video coaxial cable.
