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Radar not working

Get message: hd sig miss also sort of clicking noises from the antenna unit

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Hello dvdcoote. You have lost your magnatron. Your HiVoltage connection or the magnatron has gone bad. Disconnect the power to the unit. Disassemble housing and remove the rotor or disconnect the power to the rotor motor. Check for a burn on the insulation of high voltage wiring. This could be the clicking noise. In this case use high voltage gloves and repair the connection or replace the magnatron assembly. Please be careful of HIGH voltage. Note; hd sig miss could be decoded stating High Defined Signal Missing.

Posted on Sep 29, 2008

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I believe the antenna on that model is a "smart" antenna, which means that the receiver is in the antenna, not in the display, and it is connected to the back of the display with a multi pin plug that provides power and data link to the antenna.

If the antenn is mounted directly in the path of a RADAR beam from a RADAR antenna on your boat, the antenna will not acquire satellites while the RADAR is on.

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1) remove the display from its mount
2)gently tug on the GPS cable to see if it comes off without twisting. If it comes off make sure it is aligned, push it back on twist the locking ring and try again.
3) if GPS plug is properly installed and unit doesn't work, remove the plug and and check the pin holes for corrosion, also check the socket in the back of the display for damaged or missing pins. Anything that interrupts power or data will cause the antenna to stop working. If there are no obvious signs of corrosion or damage, then the problem is most likely in the antenna processor. If you have access to another antenna, or if you know somebody who has any model Lowrance with the same plug on their GPS try running your display on their antenna. If it works elsewhere then you need a new antenna, which is probably just as cheap to buy new as to have repaired. If it doesn't work then you probably need to remove the display and antenna and send it out for service.
4) Before you send it out there is a slight possibilty that the problem lies in your display processor. Make sure you have the latest software update in your display. The software version should appear on the display when you first start it up. Click here to compare your version to the most current version available. If your software is not current, download it to a blank data card, place the data card in your chart slot, and turn on the display. The screen will prompt you on what to do next. If that doesn't work then repair or replacement is your only option.

I hope this helps, please contact me if you have any questions , or if you decide to replace it I'll be happy to offer advice about new models.

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