Possible causes
Possible solutions
Power source insufficient
With the product under load, using a multi-meter, check the
power supply voltage as close to the unit as possible to establish
actual voltage when the current is flowing. (Check your product’s
Technical specification for power supply requirements.)
Damaged or fouled
transducer
Check transducer condition, ensuring it is not damaged and is free
from debris/fouling. If necessary, clean or replace your transducer.
After cleaning or replacement coat the transducer using a
water-based anti-fouling paint.
Damaged cables
1.
Check the unit’s connector for broken or bent pins.
2. Check that the cable connector is fully inserted into the unit
and that the locking collar is in the locked position.
3.
Check the cable and connectors for signs of damage or
corrosion, replace if necessary.
4.
With the unit turned on, try flexing the power cable near to the
display connector to see if this causes the unit to re-boot/loose
power, replace if necessary.
5. Check the vessel’s battery voltage, the condition of the battery
terminals and power supply cables, ensuring connections are
secure, clean and free from corrosion, replace if necessary.
6. With the product under load, using a multi-meter, check for high
voltage drop across all connectors/fuses etc (this can cause the
Fishfinder applications to stop scrolling or the unit to reset/turn
off), replace if necessary.
Vessel speed too high
Slow vessel speed and recheck.
Bottom too shallow or too
deep
The bottom depth may be outside of the transducers depth range,
move vessel to shallower or deeper waters as relevant and recheck.
Poor / problematic image
Possible causes
Possible solutions
Targets will appear differently
if your vessel is stationary (e.g.:
fish will appear on the display as
straight lines).
Increase vessel speed.
Scrolling paused or speed set too
low
Unpause or increase sonar scrolling speed.
Sensitivity settings may be
inappropriate for present
conditions.
Check and adjust sensitivity settings or perform a Sonar reset.
Damaged cables
1.
Check the unit’s connector for broken or bent pins.
2. Check that the cable connector is fully inserted into the
unit and that the locking collar is in the locked position.
3.
Check the cable and connectors for signs of damage or
corrosion, replace if necessary.
4.
With the unit turned on, try flexing the power cable near
to the display connector to see if this causes the unit to
re-boot/loose power, replace if necessary.
5. Check the vessel’s battery voltage, the condition of the
battery terminals and power supply cables, ensuring
connections are secure, clean and free from corrosion,
replace if necessary.
6. With the product under load, using a multi-meter, check
for high voltage drop across all connectors/fuses etc (this
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