Question about Garmin iQue 3600 GPS Receiver

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Not receiving satellite signal.

If my atenna has gone bad, is there a way I can repair it? I am very good with small electronics.

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Re: Not receiving satellite signal.

I too fixed my IQ 3600 satellite-acquiring problem, with a $20 Gilsson external antenna. This was after I'd paid Garmin $150 just last year to repair the same problem. They ended up sending me a different unit.
I'm not very happy with Garmin. I bought my IQ 3600 in 2004 for what seemed to me like big bucks. Just 2 1/2 years later I paid $150 to get it repaired. If Garmin had its way, just a year later I'd again pay for another repair (now $200!) Hmmm, is it worth it? I don't think so!
I love Ginger when she works, but she don't work so good! Thank goodness the external antenna fixes the problem! Otherwise, I'd be a-fussin' and a-fumin'.

Posted on Jan 06, 2008

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Re: Not receiving satellite signal.

1st check to see if an external antenna will work.

Posted on Sep 05, 2007

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If your unit is still acquiring satellite, then it means the signal strength is weak, try to get it outside where it can be facing the sky directly so it will be able to acquire satellite. Once you just update your gps receiver, it seems like it is brand new and when it wants to first acquire satellite, it might take longer to do so. But if it has access to the sky directly, it should take about 3 to 5 minutes to acquire.
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My Garmin Nuvi seems to have gone insane. It can no longer find a satellite signal, tells me I am on a road I am not on, and tonight told me I was in the middle of the Puget Sound (ocean) heading towards...


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Garmin 660 reads as acquiring satellite and stays stuck in this screen. Reset default settings, moved around outside to get the signal.

satellite receivers seem to be doing this on cloudy days also bad line of sight to the sky. say the unit is being blocked from seeing out the window properly or is in to far from the windshield it will not have a direct line of sight with the sky. thus no signal acquisition.

these units rely on signal triangulation to track your Xiamath location it takes 4 satellites to give your exact or near exact coordinates consider that your line of sight is not the problem then is say theirs a issue with eh unit and it may be defective. but try holding it outside the car a second like out the window and see if it picks Anny satellite up. if so then line of sight is probably the issue here. good luck and thanks for using fixya service.

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1 Answer

Standard horizon 155c not acquiring signal

If the signal is good statement seems to imply that it is working, perhaps this is my misinterpretation of what you mean by this.
Signal refers to the abi;ity to connect to satellites
4 are requied for triangulation.
If the unit is fully charged and not connecting , then it is quite possible that the unit has a damaged SIIRF chip or whatever chip was used in your model to acquire satellite connection. The cost of repair is costly, it means total replacement of the M/Board.
Never start car with the unit connected into DC car power, spikes will damage the chip

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1 Answer

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make sure you have good batteries fitted, some batteries will not be strong enough to allow a good connection.

other than that you have a faulty chip and that's expensive repair

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1 Answer

GPS takes a long time to receive satellite signal.

You probably are just in a bad location where satellites are not reachable. All these units work from the same satellites and recieve them the same so it wouldn't matter what brand you have. I highly doubt that the powerlines and cell towers are effecting the transmission.

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Having taken several Nuvi's apart, the flip up antenna has a 1/4" wide flat flex cable that runs from the flip up antenna assembly to the main board.

The flex cable carries the voltages required to power the antenna assembly and bring the signals back to the main board.

There is actually a printed circuit board in the flip up antenna assembly. It's possible that this is the receiver itself.

The flex cable runs through the round center hinge of the antenna assembly on the right (looking at the Nuvi from the rear) back to the main board.

There is also a magnet involved with the flip up antenna assembly that tells the main board whether the antenna is up or down. If the antenna is down, the Nuvi will NOT look for satellites.

A couple things can happen here that can make your Nuvi not find satellites: Assuming you have tried a hard & soft reset:

1. The antenna flex ribbon cable has become damaged.
2. The antenna flex ribbon cable has become detached from either end (it's held in with just a snap down flap).
3. The magetic switch isn't operating correctly and the main board thinks the antenna is down.
4. The front-end receiver has failed.

If your good at taking things apart (and the Nuvi is a little tricky to take apart), you might be able to verify some of the possibilities I mentioned above.

You might also try looking for a Nuvi for parts on eBay. Maybe you can find one that has a bad LCD screen and salvage the antenna from it.

Good luck!
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1 Answer

Gps reset

if you used the reset gps function, it will re-adquire in about 5 minutes as long as your atenna is good.

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