Screen frozen, c120 raymarine combo,chart,radar,depth

After nearly 4 years I dunno if you got this sorted.

The question is ambiguous, as Raymarine radar comes with wiring harnesses; the display end is a plug-and-play 12-pin male to the harness end female; the other end goes up the mast in a plastic sleeve to prevent damage to the 8-pin connector and the 2 or 4 power cables (depends on "light" or "heavy").

There's a means of connecting a digital radar to the C120 but I don't have that so don't know the specifics.

Is this the sort of information you were looking for?

Do you have the display configured for "heading up"? If it's "north up" then the map orientation will be fixed and your heading will change. Look at the softkeys under "presentation". The C120 doesn't have a hidden electronic compass; it uses the heading from the GPS (which will wander around when you are stopped). If you have a Raymarine autopilot it will provide compass heading to the C120.

I would think it's prity much certain that the DSM 300 is duff. I returned mine back to Raymarine for test and repair £200 + VAT They came back unable to repair as they have no parts for the DSM 300 . They undertake to be able to repair units for up to 10 years and I think that's why they offered me a DSM 30 that will work with my analog display in my case a C70 MFDU and the existing transducer. OR an upgrade to a CP370 digital sonar unit, this will work on your existing tranducer but you will have to upgrade your display to a digital unit, I went for the upgrade and purchased an "a"series 9" MFDU with a chart, fantastic performance. This has left me with a spare analog MFDU that will hopefully keep my radar running a little longer before I have to go down that road and upgrade.
Hope this helps
PS there was no extra to pay so a CP370 for £240 was a good deal

How old is the radar antenna? When the echos are weak that is a sign of a failing or weak magnetron. Have you gone into the system diagnostics page to read what the signal strength of the radar is?

You will need to send it back for repair. Raymarine is excellent with thier service department. Everything you need to know about sending it back is on their website. www.raymarine.com

With the charts page up, start by hitting the find ship softkey at the bottom of the screen.If that find the boat on the chart all is good.If not you need to check you have a GPS fix. Go to GPS screen and see you are seeing satalites.
If all is good when you hit find ship and the boat disappears again from chart while underway you will need to go into the chart setup menu and see if the screen amplifier is turned off. If off turn on.This is first place to start. Hope that helps

fish finder transducer needs to be on before you boot your system. check your hsb cables and termination

No. It is not a networkable unit. That's why they made the E-series

I have one of these same units brand new for sale real cheap

Send unit back to Raymarine. Two year warranty. I just talked to the factory about a communication error between the E series and the radar. Radar just stopped communication between radome and E unit.