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Horizontal
Scan
Lines,
Rolling Up
or Down
Negative,
scrambled,
or faded
image
Ground
Loop on
video cable
Low voltage
monitor. Check the
video signal. If okay,
the problem is with
the interconnections.
If still no video,
contact Bosch
Service Center. See
rear page of this
manual for contact
information.
Check the coax cable
shield is not touching
“ground”, e.g. at the
couplings.
An electrically
isolated circuit board
or isolation
transformer may be
required.
Check voltage at
input power cable.
Must be
>12VDC/VAC.
Video leads reversed
connection.