29
Poor
Picture
Quality
Horizontal
scan lines,
rolling up or
down
Negative,
scrambled,
or faded
image
Ground looping on
video cable
24V ac operation
Low voltage
Check the coax cable
shield is not touching
ground, e.g. at the
couplings.
A video isolator or
isolation transformer
may be required.
Line Lock adjustment
required.
Check the voltage at
input power cable.
Must be >10.5V dc
or >12V ac.
Check video leads for
reversed
connections.
