What causes Furuno Marine Radar picture not updated or picture freeze-up?
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Cheryl HernandezSep 15, 2025
If the picture on your Furuno Marine Radar is not updating or freezing up, it could be due to the bearing signal generator board in the antenna unit, the SPU board, or a video freeze-up. Check the connection of the signal cables. Replace the SPU board. Turn off and on the radar.
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Sheila Byrd PhDAug 25, 2025
What to do if the Furuno Marine Radar picture is not updated or freezes?
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joshuaritterAug 25, 2025
If the picture on your Furuno Marine Radar is not updating or has frozen, this could indicate a video freeze. Try turning the power off and then on again to resolve the issue.
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Pamela HaasAug 26, 2025
Why Furuno Marine Radar range changed but radar picture not changing?
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Anita SmithAug 26, 2025
If the range is changed on your Furuno Marine Radar, but the picture isn't updating, the cause may be a defective range key, SPU board issue, or video freeze-up. Try hitting the RANGE key several times. If this doesn't work, the keypad may need replacement. Alternatively, the SPU board might need replacing. As another option, try turning the radar off and on again.
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Brittany BurnsAug 26, 2025
Why is the user chart not displayed on my Furuno Marine Radar display?
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shellystevensAug 26, 2025
If a user chart isn't showing on your Furuno Marine Radar display, it could be due to several reasons: the user chart may not be selected in monitoring mode, the system might have failed to post-process the chart for radar, or the LAN adapter cable may have loosened. To fix this, ensure that the user chart is selected in monitoring mode. Close the User Chart menu to activate post-processing for the user chart. Also, check and connect the LAN adapter cable.
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Thomas RiosSep 16, 2025
Why Furuno Marine Radar is properly tuned but has poor sensitivity?
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Monica SmithSep 16, 2025
If your Furuno Marine Radar is properly tuned but has poor sensitivity, it could be due to several reasons: a deteriorated magnetron, a detuned MIC, dirt on the radiator face, water ingress to the waveguide or other feeder line, or the second trace echo rejection being ON. With the radar transmitting on 48 nm range, check the magnetron current; if it's below normal, the magnetron may be defective and should be replaced. Check the MIC detecting current; if it's below normal, the MIC may have become detuned and must be tuned. Clean the radiator surface. Remove water from the feeder line. Disable the second-trace echo rejector.
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Dr. Denise JohnsonSep 23, 2025
What to do if buttons on Furuno Marine Radar trackball module operated but no response?
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lwhiteSep 23, 2025
If the buttons on the trackball module are operated but there is no response on your Furuno Marine Radar, the issue is with the trackball module. Replace the trackball module.
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Aaron MendezSep 8, 2025
What to do if nothing appears on Furuno Marine Radar display?
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Zachary KeySep 8, 2025
If nothing appears on the display of your Furuno Marine Radar, the brilliance might be too low. Adjust the brilliance.
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Joshua ShortSep 8, 2025
Why Furuno Marine Radar data and marks not displayed in Transmit status?
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jamesjacksonSep 9, 2025
If data and marks are not displayed in transmit status on your Furuno Marine Radar, the issue is with the SPU board. Replace the SPU board.
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Christina StoneSep 2, 2025
Why is the past track not displayed on my Furuno Marine Radar?
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Lisa CampbellSep 2, 2025
If the past track is not displayed on your Furuno Marine Radar, it is because past track is not selected visible. Open the Tracking page of the Chart Display menu and select Past track of System to either Std or Oth.
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Brian CannonAug 31, 2025
How to fix Furuno Marine Radar when range rings are not displayed?
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melissa90Aug 31, 2025
If the range rings are not displayed on your Furuno Marine Radar, it could be because the range rings are turned off. Turn on the range rings from the Color menu.