Question about Northstar M121 Navigation System

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We have a Northstar system on our boat...the M121 and while out fishing today the screen went so dark we cant read it without a flashlight. Cant seem to be able to fix it either..any ideas?Thank-you

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  • Carol Dueck Aug 02, 2013

    We have found out we need a new screen and cant seem to find one so may have to buy a complete new system for the boat...this sucks as its fishing season now!!!! :(

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I have the same problem there is a resistor on the high voltage side burned cannot identify the number or resistance to replace it need diagram or parts list for machine

Posted on Jan 15, 2016

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