PROFESSIONAL
SuRvEILLANcE SYSTEM
PROBLEM POSSIBLE CAUSE SUGGESTED REMEDY
Camera has no
power or not
powering up
Power supply is loose
or unplugged, no power
at socket outlet/power
point
Check all cables and power supply connection.
Check power at socket outlet/power point.
No picture
Signal interference
No power at camera
or no power at socket
outlet/power point
Relocate camera and DVR, away from sun, rain,
radio transmitting devices, heat sources, metal
objects or major obstacles.
Check all cables and power supply connection.
Check power at socket outlet/power point.
Poor image quality
Signal interference Relocate camera, away from sun, rain, radio
transmitting devices, heat sources, metal objects
or major obstacles.
Check camera connection.
Pictures have flowing
interference ripples
Unstable AC power
supply or interference
from other nearby
electronic equipment
Check power at socket outlet/power point.
Check all cables and power supply connection.
Relocate camera and/or DVR.
Picture background
colour changes
continuously
Interference from
nearby fluorescent lamp
electromagnetic field
Relocate camera, or increase the distance
between the camera and fluorescent lamp.
Frozen white screen
Interference from
other nearby electronic
equipment
Disconnect power to camera, then reconnect
Relocate camera and/or DVR.
When IR night vision
is activated, screen
only displays white
Infra-red LED light is
reflected off from glass
or reflective objects that
causing white light
Relocated camera away from windows, reflective
and glass objects, or remove obstacles.
When IR night vision
is activated, screen
only displays black
and white
Infra-red LED light is
activated
This is normal, no action required.
6 TROUBLESHOOTING GUIDE