Furuno 1930 radar magnetron does not heat

It seems like you're dealing with a technical issue related to a Furuno radar array. If the radar array is not spinning and is emitting a beeping sound, there could be several possible reasons for this problem. Here are a few steps you can take to troubleshoot the issue:

1. Check Power Supply: Ensure that the radar array is receiving proper power. Check the power cables, connections, and any fuses that might be relevant. Make sure the power source is functional and providing the correct voltage.
2. Inspect Mechanical Components: If the radar array won't spin, there could be a mechanical issue with the rotating mechanism. Check for any obstructions or debris that might be preventing the rotation. Lubricate any moving parts if necessary.
3. Connection and Wiring: Examine the connections between the radar array and its control/display unit. Loose or damaged cables could cause communication problems and result in the array not spinning. Ensure all connections are secure and undamaged.
4. Software and Configuration: Sometimes, software settings or configuration options can affect the operation of the radar array. Check the user manual or documentation to ensure that the radar is properly configured. Try resetting the settings to default and see if that resolves the issue.
5. Error Codes or Messages: If the radar is emitting beeping sounds, it might be indicating an error condition. Refer to the user manual or any accompanying documentation for a list of error codes or messages and their meanings. This could help pinpoint the problem.
6. Contact Support: If you've tried the above steps and the issue persists, it might be best to contact Furuno's customer support or a qualified technician for further assistance. They can provide more specific guidance based on the model of your radar array and the symptoms you're experiencing.

Remember, working with electronic equipment requires caution to avoid electrical hazards. If you're not comfortable troubleshooting the issue yourself, it's always a good idea to seek professional help.

Assuming you have the right magnetron for the right model radar, you desolder the two leads, remove the 4 or 6 mounting screws and reverse the process for the new maggie. Let radar run in standby for 30 minutes before going to transmit. Most Furuno radars have auto-tune and will tune itself to new magnetron.

Change heading sensor /reedswice

Open the dome cover and check the belt that spins the array. Sometimes the gear on the motor that holds the belt comes loose and will not spin the array. I have seen this on 4 radars and all were about the same age. The gear has a small allen head set screw. Move the gear down and tighten the screw down. If you are still having issues there are some more troubleshooting techniques you can do, but you will need a multimeter to test voltages coming from the display.

Heading pulse is a reed switch sensor built inside the dome. upon each rotation of the array the reed switch is activated. Do a visual inspection of your array (inside) to make sure it is spinning (verify from a distance). Don't get eye level with the rotating array it can cause great harm to your eyes. Normally I have seen the belt slip off and also the lanyard attachment get caught in the array. Check those two things as well.

If you have no radar targets, go to longest range 24 miles, gain full, rain and sea minimum, do you have noise, if so, need magnetron, if not, need cable from display to dome.

The symptom you describe sounds like a case of no radar targets. To further diagnose, put radar on the longest range and turn Gain to full, Sea Clutter to Minimum, Rain Clutter to Minimum, and observe the screen. The presence of "grass" or evenly distributed clutter indicates that the receiver and cabling is good and the radar may not be transmitting. No transmit is caused by a bad magnetron or a bad modulator in the antenna, or depending on model there is still an outside chance that the power supply in the display has failed.

Go to longest range and full Gain min Rain and Sea Clutter
Do you have speckle? Yes = Receive OK, Wiring OK,No transmit (magnetron or modulator) No = Most likely a broken wire
There is a very tiny coax (shielded wire) that is know to lose its' center conductor, which is very delicate

Either your reed switch is bad or your antenna is not rotating. You may hear the motor spinning but that does not mean the array is. If the array is not spinning make sure the belt did not come off the motor. Start there.

i have a furuno 1700 radar ,when i switch it on it goes to stand by ,when i press the standby button you can see it scanning but no land appears cheers alan