my compass doesn't spin.. - SailNet Community

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Old 08-01-2011
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my compass doesn't spin..

So how come my compass always shows me 180 south, or close to it?
There is a small LCD TV behind it and an inverter, but these are not operating.

Compass is a plastimo about 5yrs old.

gh
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Old 08-01-2011
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You never leave the dock? Sorry..couldn't resist..

Dunno... when was the last time you saw it work?
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Old 08-01-2011
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Talking

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Old 08-01-2011
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An inverter has windings in it so it's probably creating a magnetic field.
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Old 08-02-2011
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Move the compass off the boat and see what happens.
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Old 08-02-2011
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I'd go with magnetic interferance
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Old 08-02-2011
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Anything electrical can effect your compass and that includes battery operated devices.
Besides unless you are live aboard get rid of the TV .....get off the dock and go SAILING
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Old 08-02-2011
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TURN
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Old 08-03-2011
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It doesn't need to be turned on, or even electrical, to affect the compass. I once set a canned air horn on the binnacle and missed my destination by several miles.

If you have anything DC electrical - even a little LED light for the compass - near the compass twist the wires so the electromagnetic field negates itself when you turn the device on.
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Old 08-03-2011
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You probably forgot to turn the compass "ON". There should be a small switch somewhere. Next time you're on the boat look for it.
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