Question about Raymarine Raystar 120 GPS Receiver
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Posted on Jan 02, 2017
SOURCE: raytheon rl70
I've had the same problem. before replacing the antenna, try to reset the antenna by removing power to the Raystar 120. Disconnect power by either turning off all batteries or disconnecting the red wire from the antenna at the point where it enters the junction box for the chartplotter. This action effectively removes all memory from the antenna and resets it to factory settings. There is a lithianium battery in GPS antenna that holds memory data in the antenna. Disconnecting the power to the antenna for a few seconds clears the memory.
This is exactly what I did and when I turned the chartplotter back on, my Raystar 120 immediately began working again.
Posted on Aug 17, 2008
SOURCE: wiring of seatalk instruments
OK, you are confused.
Seatalk is a bus system, using 3 wires , (power +, power-, and Data.) red, bare and yellow repectively. So Red and Bare are 12V and ground. Since the 125 shows a green light, it is getting power and outputting data. but is it seatalk??
to make a 125 Seatalk, you must hook red and green together to 12 V, so check that first. if green is grounded or not connected, that is the problem (or one of them)
Next divide system to its' simplest terms, so hook the GPS straight to the display ST60, and see if it works red to rd, yell to yell and bare to bare (sometimes black) One by one hook the others into the chain until they all work or failed device takes down Seatalk network. If you are missing 12V on a seatalk leg, check 5A fuse in course computer. If you have a pilot, you have a course computer, unless it is ST4000 wheel pilot, and then the brain is the display (course computer is built in to ST4000 display)
Posted on Jan 17, 2010
Hi go to
for a very good video on how to replace your battery
If this helps please rate me
Posted on Jul 23, 2010
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