Question about Garmin nuvi 350 GPS Receiver

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How do you remove the antenna safely

My Nuvi 350 powers up but freezes at the menu screen. Its past the warranty and i'll buy a new one if i have to pay $175 to fix it. I think the problem is either with the touch screen or a software freeze. Either way I need to learn how to open it and replace the battery anyway. Right now I want to open the unit and see if there is a loose connector to the touchscreen that has resulted from vibration. So how do I remove the antenna to get to the two hidden screws underneath it? As you know Pictures are worth a thousand words, so if you have any for this kind of repair please post them. Thanks in advance.

Buz
Gilbert AZ

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There are two hidden screws underneath the antenna. First remove the back cover to the antenna (two torx screws T4 iirc). Once the cover is off on the left side there is a slot for a small screw driver. Place the screw driver in the slot and slide it to the right while while moving the left side out. This is the spring loaded cam which hold the antenna up. Once the left side is free then you can just move the right side pivot out. Be careful when moving the right side it has the ribbon cable for the antenna to the main board. Once the antenna is out of the way you will see the two hidden screws. Use a case opener (ipod case open works great) to open the case.

Posted on Jun 13, 2008

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I don't think there any screws under there, the case looks more like a snap together case.
I doubt that ik locks up because of the touch screen, maybe some erronous POI's caused the problem, try this (i found on the net)

When you're at the main screen, hold your finger on the time in the upper right corner for more than 5 seconds, and you'll get to an info screen, and back/next buttons lower right of screen.
There's some sound diagnostics, and screen tests, and lots of info pages - including one with some battery status/statistics. To get out of the diagnostic mode, power cycle your unit...and when you do this, it will take some time to lock on to satellites.

Posted on Jun 12, 2008

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I have a garmin nuvi 350. It suddenly quit. It would not power up. I bought new car charger and wall charger specifically for nuvi 350. Both charger would not power up the gps at all. Is my battery dead or...


I would say this is not a battery problem. A Nuvi will power up even with the internal battery disconnect (done it many times myself ) when connected to an external power source. Please see this link about Dead Nuvi's. Have you tried pressing the reset button behind the antenna?

http://www.sharc.net/gps_dead.htm


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Have you tried the "recalibrate" touchscreen command?

Press the "wrench" symbol at the main menu, then the "display" icon, and then "recalibrate".
Go through pressing the dots as requested and see if that cures your problem.

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Sorry to say the LCD display is cracked. You can find a replacement LCD display with tools on eBay but they are kind of pricey.

You might try finding one for sale that has an antenna problem or is completely that had a known working display at the time it died.

If you send it back to Garmin, it will cost you almost the same as a new one if your unit is out of warranty.

Good luck!
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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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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:

  1. Strip a ¼” of a wire twist-tie end (the kind found on bread wrappers) bare exposing the fine wire core.
  2. Power up your nuvi 350/360 and confirm that you are not receiving any signal.
  3. While still powered on, insert the bare-wire end of the twist-tie into the center female external antenna jack located on the side of the antenna. If done correctly the external antenna jack will firmly hold the twist-tie in place. You cannot damage the unit by doing this.
  4. If you now have satellite reception then proceed to step 5. If you still do not have any reception then I have no further advice other than to try all of the update/reset procedures. If all else fails return to Garmin for repair.
  5. Once you have established that you have signal using the twist-tie, remove the twist-tie and confirm signal loss.

Your choices to remedy this issue is as follows:

  1. Purchase & use an external antenna.
  2. Return the GPS to Garmin for repair ($175 if its out-of-warranty). Or,
  3. Send your Garmin Nuvi 350/360 to us for repair. We charge $55 (return shipping included) to repair this malfunction. We can also accommodate this repair transaction via eBay in order to provide you with additional reassurance (an addition $5 is added to cover eBay fees, etc. when using this option). Our eBay ID is westek_electronics, feel free to review our feedback ratings. Our repairs are covered by a 30-day warranty. If for some reason we are unable to successfully complete the repair we will return the unit to you and charge only $10 for return shipping. To initiate your repair contact us at westek12@hotmail.com.

Hope this helps.

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Hi:
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