Autohelm ST50 Plud Radar Fuse

[jfssail]

I posted this problem on the C36 chat line with no response, so maybe a c34 member  has a solution.
My 1994 radar has worked with no problems until a week ago  when the special 3.15 amp fuse, F401 blew. According to the manual, this fuse protects the unit from reverse polarity. Tried a normal 3.0 amp fuse and it just blows. The fuse blew while the radar had been in operation for 5 hours and went blank.

Jack F Stewart
1993 C36 #1233 "Windancer"
Port Clinton, OH

Now in the North Channel in Little Current

[Ken Juul]

One fuse, maybe it just got tired, if more than one fuse has blown, you definitely have a problem.  Time to get out the meter and do some trouble shooting.  I don't have any specifics about your radar so can't help.  If you don't have wiring diagrams, perhaps it is time to seek professional help.  when I was having problems, it turned out to be a loose ground connection buried in an outsite cubby.  Might want to check all your connections, especially if they are just crimped.