! The downrigger contact sleeve is not plugged or is not making proper
contact with the stainless steel wire.
! The downrigger wire is not in the water.
! The zincs on the boat are worn out or are not functioning resulting in a low
reading which is below the light bar model minimum of .5 volts.
! If you are in freshwater there may not be enough dissolved minerals present
to cause significant natural electrolysis. Most bodies of freshwater will show
readings very close to salt water but you may have found an exception.
"When the light bar Black Box is plugged in but not turned on, the green
light stays at .9 volts"
! This means the natural electrolysis is .9 or above. This is abnormally high
and usually indicates some other higher nobility metal like monel wire.
"When the voltage on the downrigger wire is tested with a separate volt
meter, the reading is not the same as the natural electrolysis reading
shown on the Black Box"
! This usually indicates there is too much load on the negative ground wire
where the negative lead of the Black Box is connected. If several devices
like radios, radar, electric downriggers, blowers and fish finders are all
attached to the same ground terminal strip, often there is not enough
capacity in the wire going back to the battery. This throws the Black Box off.
A separate negative lead should be run from the Black Box black wire back
to the engine or battery ground.
Black Box Fishing Tips
! Resist the temptation to turn the Black Box up to a higher voltage if you are
not getting strikes. It is actually better to reduce the natural electrolysis
voltage. You have the Black Box too high if hooked fish fight violently or try
to swim under the boat when brought near the hull.
! Larger fish are more sensitive to positive charge. Lower the voltage of your
Black Box to attract them.
! Make small adjustments with your Black Box. Often this is all that is
needed.
! A boat that has good natural electrolysis levels may change when you
repower or change any electronics on board. Test your boat any time you
make a change to be sure you are not repelling fish unknowingly. A boat
that fishes well without a Black Box may require one after a change of
engine.
Contact us at:
Scotty Fishing, Marine & Outdoor Products
Customer Service
2065 Henry Ave, West, Sidney, British
Columbia, Canada V8L 5Z6
Phone: (250) 656-8102
Fax: (250) 656-8126
Toll Free: 1-800-214-0141
www.scotty.com
Email: scotty@scotty.com
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