RL80C - No Fix

[mratlndmrk]

I have an RL80C which gets it's GPS signal from a Raymarine RN300. The RN300 has a fix and yet the RL80C tells me no fix and thus no chart navigation. This happened when I first got the boat and suddenly fixed itself so I paid no more attention to it. The infection is back again so I wanted to reach out and see if anyone else has had this problem or could it possibly just be a loose connection between the two.

Thanks in advance.

 

[The Bill Collector]

The first thing I would check is the connection on the back of MFD...

 

[ZZ13]

The RN300 passes data to the RL80C using Raymarines Seatalk bus. The Seatalk bus has to be powered to work. On my boat the "electronics" carling switch activates power to the bus. Power to the Seatalk bus runs through a fuse in the helm. So check to see no fuses are blown. And check to make sure the three pin Seatalk connector on the back of each unit is properly seated and making contact. I once had a Seatalk plug end with too much rubber on the end and so the pins in the female socket wouldn't always reach their mating connectors. Took a long time to figure that one out. I ended up shaving off a few millimeters of the rubber and that solved it.

 

[dtfeld]

The RN300 passes data to the RL80C using Raymarines Seatalk bus. The Seatalk bus has to be powered to work. On my boat the "electronics" carling switch activates power to the bus. Power to the Seatalk bus runs through a fuse in the helm. So check to see no fuses are blown. And check to make sure the three pin Seatalk connector on the back of each unit is properly seated and making contact. I once had a Seatalk plug end with too much rubber on the end and so the pins in the female socket wouldn't always reach their mating connectors. Took a long time to figure that one out. I ended up shaving off a few millimeters of the rubber and that solved it.

There is another option. You may have a RS125 Seatalk GPS sensor installed. It will be networked into the Seatalk bus with a junction box. I just pulled my RS125 out and the new MFD'd have build in GPS. The junction box will look something like this..

 

[mratlndmrk]

The RN300 passes data to the RL80C using Raymarines Seatalk bus. The Seatalk bus has to be powered to work. On my boat the "electronics" carling switch activates power to the bus. Power to the Seatalk bus runs through a fuse in the helm. So check to see no fuses are blown. And check to make sure the three pin Seatalk connector on the back of each unit is properly seated and making contact. I once had a Seatalk plug end with too much rubber on the end and so the pins in the female socket wouldn't always reach their mating connectors. Took a long time to figure that one out. I ended up shaving off a few millimeters of the rubber and that solved it.

Yeah the PO of my boat put the underwater lights on the electronics toggle switch. My Electronics are live always when the batteries are on. Once I get a minute I'll pull the panel and check the sea talk connectors as well as the fuses although all the electronics work so I'm not thinking that is the case (the autopilot compass is still giving directional info to the series). I'm guessing (hoping) it's a loose connection.