Question about Garmin Nuvi 350 Car GPS Receiver
I own & operate the electronics repair company, Westek Electronics in Nashville, TN. We repair & refurbish GPS units among other things. We have repaired many nuvi 350/360 units with this issue.
This issue is typically due to a hardware malfunction and cannot be remedied by software upgrades, resetting, etc.
Do this test:
Your choices to remedy this issue is as follows:
Hope this helps.
Posted on Mar 05, 2009
This problem is not caused by poor solder joints. It's caused by a defective part. We sent a "marked" defective unit to the repair shop mentioned below and upon its return, disamantled the GPS receiver assembly and made the following evaluation:
1. The shop did NOT replace the defective component causing the initial problem in the 1st place. The defective part was STILL in the circuit.
2. The shop placed a wire jumper between the internal antenna and the external antenna port. This type of modification places a +2.5VDC bias on the internal antenna and essentially shorts the internal antenna to the external antenna (when connected), giving unpredictable results. It also affects the circuit impedance and signal strength. This is not the correct way to resolve this issue.
3. The defective part needs to be replaced with a higher rated part. This type of repair returns the unit to full functionality and allows the unit to properly switch between the internal and external antenna as it was intended to do by design
Comments: Feb 03, 2010- I will aso add, as the part deteriorates, it becomes resistive and can eventually short out and shunt the incoming RF signal to ground......EVEN with the jumper procedure performed by the shop mentioned above.
Posted on Feb 17, 2010
Just to let anyone interested know, I did send my Nuvi to Westek Electronics for the $55 repair of the "no satellite" problem. I received the repaired Nuvi back in 3 days and it has been working perfectly ever since (about a one and a half months now). They provided great & fast service at reasonable price. If you are having this same problem I highly recommend you send it to them for repair. Thanks, 36rn
Posted on May 15, 2009
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Posted on Jan 02, 2017
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.
Posted on Jul 10, 2008
The internal antenna/GPS is defective and needs repaired/replaced. Please see this link:
Posted on Oct 08, 2009
I had this problem once. I used a tiny screwdriver to reset the Nuvi through the reset button at the bottom. Make sure the antenna is down when you restart. Once you get to the main screen open the antenna only half way - like 45 degrees from the main unit. It may take a few minutes to locate the satellites.
Posted on Apr 10, 2010
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