Furuno DRS4D Range Issue - New Magnetron Still Issue

[mdsilvers]

Hello. I have a five-year-old Furuno DRS4D. One day the radar was working, and the next day it was not, meaning I had no range beyond 1NM of targets. I was fairly sure it was a Magnetron issue based on my previous Furuno radar, so I replaced with a new one. I have the same issue. Here are the specs from the Service Man screen:

Operating Hours: 4914
TX Time: 3129
TX-HV: 348.5v
12v: 12.4
5v: 5.0v
3.3v: 3.3v
Pulse Volt: 8.9
Tuning Volt: 5.7
Magnetron Monitor V:3v
Arpa: 0
Land: 0

 

[Johnny Electron]

I would recommend you send the unit in for testing because it can get expensive to buy parts playing guess-tronics. Looking at the monitor, I would guess the MIC (tuning device) has an issue but it would be best to have the service center check it out.