Question about Raymarine E120 GPS Receiver

2 Answers

No GPS fix

Sometimes the GPS will not pick up satellites for hours after booting up unit, for no explainable external reason. I have heard that these units can have a software problem and if so, how to fix it?

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  • Borry Apr 27, 2008

    I have a c120 and sometimes intermitantly wont connect to sats and i have tried turning off the unit and rebooting with no change. It is wired so i have to turn on my auto pilot so it can opperate. I turn all this off before leaving the boat.

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  • 16 Answers

Depending on how your equipment was installed, your GPS receiver may not be on the same electrical circuit as the E120. I see lots of these GPS receivers that are wired to be "always-on" so even when you shut down the E120 display head, the GPS receiver (probably the RS125) is still on.

You may want to see if this is the case on your boat and if it is always-on, change it so it powers on and off with the other gear. This allows the CPU in the GPS receiver to reboot from scratch at the start of every trip.

Posted on Dec 28, 2007

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Had same problem on trip down the pacific west coast. Best solution is to replace your GPS antenna to the 175 ( It is a problem on the 120)and upgrade the software. If this is not feasible, shutting the unit down for about 10 to 15 mins. sometimes dumps the GPS data overload. and allows FIX re-acquisition.

Posted on Jul 08, 2007

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My GPS that is only about 4 days old works fine sometimes but then it will say "Poor satelite reception" and then "none" what do you recommend?


Do you live in a an area with plenty of tall buildings/trees around you? Do you live in a valley? GPS units need to "see" plenty of clear sky to work reliably.

Does the problem occur the same whether you're using it in the car or on foot? Many modern cars have solar reflective glass which has a microscopic metal coating and it blocks satnav signals unless a supplementary external satnav antenna is fitted.

If you press and hold the nuvi's signal strength bar on the display for a few seconds you'll get a screen which shows how many satellites the unit is picking up along with a display which tells you how accurately the machine has fixed your position. It won't fix your problem but can help you find out what seems to be wrong.

If you're still having problems and these are not the causes then there's no point in doing anything further: just return it to the vendor for a refund or exchange as they are sometimes faulty straight out of the box.






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The error means it can't pick up valid GPS signals. In other words, bad reception.

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I had the same problem. Found this link

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My theory is that because it is only a 2 channel unit it takes hours to acquire a fix when the memory is blank.

The manual says it will keep it's memory for a month without batteries.

So if you leave the batteries out for more than a month, or move it more than 250 miles and then switch it on expect it to take a while to first fix.

Otherwise it's a nice little unit.

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3. Say Yes and then select the third Option "Clear All User Data" and then say Yes.
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1 Answer

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Hello, I currently own a Garmin quest myself, and some time ago I had some strange problems myself, I am a electronics technician, and I do have a work around for you. I will explain the problems and a cure for you to try, none of the work arounds depend on any parts to be removed.

1. NO RECEIVING SATELLITE TELEMETRY. I beleieve this could be due to a number of reasons, but more so at sometime corrupted telemetry was the problem to fix this,
a turn GPS on when booted (initialised)
b. depress menu
select settings
select Time Setup
when in Time Setup depress MENU
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Depress OK button
Depress OK button again on the numberic keypad that appears on the screen (DONE)
what this seems to do is resets the internal date/time clock and the unit starts to work again.
the Second workaround is this but takes hours to perform.

Simply turn the Guest on and allow the battery to fully discharge, usually this works to TOTALLY flush the Memory again, but on my unit I have to setup all the maps again, this is easy to perform, but just takes time. I hope this helps you.
phil

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1 Answer

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Hello, I currently own a Garmin quest myself, and some time ago I had some strange problems myself, I am a electronics technician, and I do have a work around for you. I will explain the problems and a cure for you to try, none of the work arounds depend on any parts to be removed.

1. NO RECEIVING SATELLITE TELEMETRY. I beleieve this could be due to a number of reasons, but more so at sometime corrupted telemetry was the problem to fix this,
a turn GPS on when booted (initialised)
b. depress menu
select settings
select Time Setup
when in Time Setup depress MENU
Select SET DATE
Depress OK button
Depress OK button again on the numberic keypad that appears on the screen (DONE)
what this seems to do is resets the internal date/time clock and the unit starts to work again.
the Second workaround is this but takes hours to perform.

Simply turn the Guest on and allow the battery to fully discharge, usually this works to TOTALLY flush the Memory again, but on my unit I have to setup all the maps again, this is easy to perform, but just takes time. I hope this helps you.
phil

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3 Answers

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Hello, I currently own a Garmin quest myself, and some time ago I had some strange problems myself, I am a electronics technician, and I do have a work around for you. I will explain the problems and a cure for you to try, none of the work arounds depend on any parts to be removed.

1. NO RECEIVING SATELLITE TELEMETRY. I beleieve this could be due to a number of reasons, but more so at sometime corrupted telemetry was the problem to fix this,
a turn GPS on when booted (initialised)
b. depress menu
select settings
select Time Setup
when in Time Setup depress MENU
Select SET DATE
Depress OK button
Depress OK button again on the numberic keypad that appears on the screen (DONE)
what this seems to do is resets the internal date/time clock and the unit starts to work again.
the Second workaround is this but takes hours to perform.

Simply turn the Guest on and allow the battery to fully discharge, usually this works to TOTALLY flush the Memory again, but on my unit I have to setup all the maps again, this is easy to perform, but just takes time. I hope this helps you.
phil

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