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Old 04-08-2022, 07:47   #1
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SeaTalkNG power issue. Please help! Raymarine P70s and i70s not turning on.

Hello fellow Cruisers!! Click image for larger version

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ID:	262173I have a 2011 Jeanneau SO409. Recently the Raymarine P70s and i70s stopped working. I thought they just crapped out. But I bought a new i70s and plugged it in and it also doesnít work. Iím thinking itís a power issue. Where would the SeaTalkNG network get the 12V power? I canít seem to locate the cable.

The C90w chart plotter works fine. But I think thatís on its own power source. But the SeaTalkNG network might not be getting power. Anyone know where the power cable would be? Or maybe a blown fuse? Or would it be safe to just attach another power cable in the middle of the network? I tried attaching the newly purchased i70s to multiple different SeaTalkNG ports and it wonít turn on

Any help will be greatly appreciated!!Click image for larger version

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Old 04-08-2022, 08:52   #2
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Re: SeaTalkNG power issue. Please help! Raymarine P70s and i70s not turning on.

Connect it to an open slot on the 5 way connector (4th photo in your post), you will need their power cable, itís colored red and black.
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Old 04-08-2022, 08:56   #3
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Re: SeaTalkNG power issue. Please help! Raymarine P70s and i70s not turning on.

Quote:
Originally Posted by Knotical View Post
Connect it to an open slot on the 5 way connector (4th photo in your post), you will need their power cable, itís colored red and black.


Yep. Thatís what I thought. I already bought the power cable (red/black). Should I have a fuse on it? If so, how many amps?

But I had power in the past. The screens were working. Will it be bad if I have potentially 2 power sources in the network?

Thanks for the quick reply!
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Old 04-08-2022, 09:17   #4
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Re: SeaTalkNG power issue. Please help! Raymarine P70s and i70s not turning on.

Yes, a 5 amp fuse for the instruments.

You are correct that the chart plotter has its own power supply, make sure thatís fused too.
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Old 04-08-2022, 10:14   #5
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Re: SeaTalkNG power issue. Please help! Raymarine P70s and i70s not turning on.

some raymarine autopilots actually supply power to the seatslkng network directly without the need for the red/black power cable ... something else to check.
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Old 04-08-2022, 10:56   #6
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Re: SeaTalkNG power issue. Please help! Raymarine P70s and i70s not turning on.

Quote:
Originally Posted by Kelkara View Post
some raymarine autopilots actually supply power to the seatslkng network directly without the need for the red/black power cable ... something else to check.


If you have a Raymarine autopilot thatís connected to your SeaTalkNG bus itís likely your source of power. Ensure
the bus fuse in the autopilot (next to the SeaTalk power connection) is ok, and that the ďpower the busĒ switch is on
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Old 04-08-2022, 11:41   #7
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Re: SeaTalkNG power issue. Please help! Raymarine P70s and i70s not turning on.

I don't think two power sources is what you want. There are recommended diagrams out there for connecting power with and without an autopilot. Either on Raymarine website or a Google search.


Having said that - if you had power working at one time and now it doesn't then you probably need to sort that out. 99% of the time it is corrosion or cable connections. So trace those, remove, clean and reconnect.
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Old 04-08-2022, 12:19   #8
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Re: SeaTalkNG power issue. Please help! Raymarine P70s and i70s not turning on.

Follow the blue cable. You will fine more blocks like that. One should have a red / black cable that is putting power into the backbone.
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Old 04-08-2022, 12:20   #9
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Re: SeaTalkNG power issue. Please help! Raymarine P70s and i70s not turning on.

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Originally Posted by Cool Hand Luke View Post
Yep. That’s what I thought. I already bought the power cable (red/black). Should I have a fuse on it? If so, how many amps?

But I had power in the past. The screens were working. Will it be bad if I have potentially 2 power sources in the network?

Thanks for the quick reply!
No don’t add 2nd power. find the problem. It obviously has power before.
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Old 04-08-2022, 15:26   #10
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Re: SeaTalkNG power issue. Please help! Raymarine P70s and i70s not turning on.

As others have stated, your C series Plotter if working correctly will power the SeaTalkNGģ network, so the first test is since that is still active, to ensure this is powering the network. [See C Series Connection.jpg]

To test if the SeaTalkNGģ network has power, where one of your (Black / White) spur cable is connected to your 5 way SeaTalkNGģ block, measure the voltage on the other non connected end female socket as shown, with a multi meter. You should read your battery / instrumentation breaker voltage. NMEA normally requires 12Vdc with a maximum variation of +/- 1.5 Volts
[See SeaTalkNG Spur Power.jpg]

You may need to use small bare wires twisted onto your multimeter probes and poke them into the female sockets to obtain voltage readings, as a typical multimeter probe is too fat.

If there is no power there, then you will need to trace back - checking the connections at the 5 way block, and then the SeaTalkNGģ backbone cables (Black/Blue).

If required, disconnect each connector, spray Electrical Contact cleaner on sockets and plugs. (NOT WD40) and let dry before reconnection. Also any spare sockets such as shown on your 5 way block should have the black SeaTalkNGģ blanking plugs installed to reduce corrosion.
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Old 08-08-2022, 09:48   #11
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Re: SeaTalkNG power issue. Please help! Raymarine P70s and i70s not turning on.

Thank you so much, guys! Going to the boat today. I’ll bring my voltmeter. And I’ll check the autopilot.

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Old 08-08-2022, 16:23   #12
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Re: SeaTalkNG power issue. Please help! Raymarine P70s and i70s not turning on.

Thank you to everyone that replied!!!! You guys are the best!! Power was being fed by the autopilot. As per recommendation. Checked the fuses (the 3amp ones). And sure enough. I found the culprit!!! There was a spare 3amp fuse in the plastic cover (how awesome is that) and worked immediately. Thank you!!!

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Now if only I can fix the green direction line. But thatís a different topic for a different day. Something to do with the fluxgate compass, I believe. I wonder if I can turn it off and use the GPS that came with my new AIS that I bought
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