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Old 21 May 2007, 16:31   #1
Country: UK - England
Town: poole
Boat name: yoyo
Make: Scorpion
Length: 8m +
Engine: o/b 250 suzuki
Join Date: Jan 2007
Posts: 42
lowrane gps /plotter

hi guys
can any one help my gps plotter screen flickers when engine is on or of checked power suply all ok make of gps lowrance 330
robbie lee

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Old 21 May 2007, 17:39   #2
Country: Ireland
Town: Galway
Boat name: rockhopper
Make: ballistic
Length: 6m +
Engine: petrol
Join Date: Nov 2006
Posts: 525
Just check teh Regulator Output, could be Diode blown or part burnt through depends on a few things but you may have to Scope output to check DC supply from Altenator, only a hunch. Did you run the engine with Batery disconnected for any length of time?

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Old 24 May 2007, 10:25   #3
Country: USA
Town: Oakland CA
Length: 3m +
Join Date: Feb 2005
Posts: 6,620
Put a voltmeter across your 12V supply to the unit, check that you're reading around 13 to 14.5 VDC. Set to AC. Ideally, you should read somewhere very close to zero. Any reading indicates that your regulator is not rectifying or filtering correctly.

jyasaki is offline   Reply With Quote

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