Question about Garmin Forerunner 305 GPS Receiver

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My Garmin Forerunner 305 GPS won't turn on.

It turns on only when attached to the base, still on power line. Thank you

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Posted on Jan 02, 2017

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SOURCE: GARMIN 305 Forerunner wont transfer data to PC

For Pc users:

Go to Garmin website Updates & Downloads, Training Centre for Windows software version 3.4.1, click on download.

I previously deleted all saved couses on Training Centre, but don't know if this is relevant.

Posted on Jun 02, 2008

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  • 84 Answers

SOURCE: My Garmin Forerunner 305 GPS won't turn on. I've

If all the sugestions did not work these units seem to be sufering from a bad conection on the inside of the unit. My wife's did the same thing. There was a connection inside that wasn't making contact. First try cleaning the 4 brass connection tabs on the watch and check your charger to make sure the tabs are raised and not squished. Second try to reset the unit. Hit mode reset and power buttons all at the same time. Hold these for 3 seconds and then release. If these do not work here is what I did. There are no screws holding the unit together. I used a exacto blade to very carefully pry the unit apart along the side seam. It's not easy to do. Be very cautious and gentle. Work the thickness of the blade into the joint to gently wedge apart. You are not trying to remove material! Once apart you will see some fingers that make a connection between the upper and lower part of the unit. This is where the problem was with my wife's 305. I gently raised these tabs to make a better connection, It's been working ever since. I didn't try it before but try pressing very hard on the unit where it says Forerunner 305. The case is very hard so it might not work. But if it powers up when pushing you found your problem. Hope this helps.Here is a link I found on opening a 205 (Same process)http://ctorunner.googlepages.com/dismantleforerunner205To put the unit back together use Automotive silicon/gasket maker.Use a tooth pick to put a VERY small amount of silicon around the entire seam. Put the two half's together and wrap tightly with electrical tape. Test the unit immediately to see if it powers on and off. If it does not open it back up and raise the small prongs that make the connection from the bottom half to the top half. If any silicon squishes out the sides wipe with water and a rag.Let the unit sit over night. In the morning remove the tape.

Posted on Jun 09, 2009

  • 84 Answers

SOURCE: garmin 305 forerunner

you can't. If it is getting softer and softer the speaker may be on it's way out.

See this link for a possible reason (bottom of the page).

http://ctorunner.googlepages.com/dismantleforerunner205

Posted on Nov 13, 2009

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SOURCE: Garmin Forerunner 305 sound

check out this link...

http://ctorunner.googlepages.com/dismantleforerunner205

Posted on Nov 13, 2009

  • 2 Answers

SOURCE: Garmin Forerunner 305

Call Garmin, I had the same problem and they repaired the HRM

Posted on Dec 08, 2009

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1 Answer

I have a Garmin Forerunner 305. When I connected it to my PC It started to charge right away and then made an attempt to upload the data. The upload failed, although indicated it was successful on the...


the Gps should be on when you connect to the computer even if the battery is not good
it could be that it overloaded and the fuse burned
I fix the GPS
i am in New York
ecrdn@yahoo.com

Sep 17, 2010 | Garmin Forerunner 305 GPS Receiver

3 Answers

Garmin Forerunner 305 won't turn on and won't charge. Is there a fix or is this it for the device?


Look at
"http://www.activesplit.com/my-garmin-forerunner-305-doesnt-power-on-its-just-dead-solutions/"

You can soft reset or hard reset the device. Hard reset deletes all data.

Apr 01, 2010 | Garmin Forerunner 305 GPS Receiver

1 Answer

Garmin 305 would not turn on after a ride. would


Reset your unit by pressing the "Mode"(reset/lap) and "Power" buttons at the same time. afte it turns on run system updater on computer

Jan 10, 2010 | Garmin Forerunner 305 GPS Receiver

1 Answer

Garmin 305 forerunner


you can't. If it is getting softer and softer the speaker may be on it's way out.

See this link for a possible reason (bottom of the page).

http://ctorunner.googlepages.com/dismantleforerunner205

Sep 01, 2009 | Garmin Forerunner 305 GPS Receiver

1 Answer

Garmin forerunner 305 won't turn off and keeps ringing .


You can reset the unit by pressing the and holding the mode and lap buttons simultaneously. This will power it off.

Jul 24, 2009 | Garmin Forerunner 305 GPS Receiver

1 Answer

Unit only powers on when attached to base charger


sounds like internal battery is dead, if underwarrenty contact company, if not these batteries are not user changeable u will have to use as is or replace

Jul 07, 2009 | Garmin Forerunner 305 GPS Receiver

1 Answer

Garmin Foreruner 305 will not turn on or charge


I had the exact same problem and thought my beloved forerunner 305 had finally died. Try pressing the lap and mode keys simultaneously, and then power on. That may do a "soft reset." Worked for me.

Jan 05, 2009 | Garmin Forerunner 301

2 Answers

NO life in my Forerunner 305


There is a hidden recessed button on the right side of the Garmin. Press this button and it should reset the unit and it should turn on immediately.

Jan 13, 2008 | Garmin Forerunner 305 GPS Receiver

1 Answer

Garmin Forerunner 305 usb cable won't be read


The problem is probably not with the USB cable if the GPS wont even turn on. The older firmware of the Forerunner 205 and 305 have a problem with locking up. This causes the Forerunner to look completely dead. There is a reset procedure: push the mode and reset button at the same time and then let go and hit the power on button. If it powers on that is the problem. Go to the Garmin site and load the newest rev. of firmware into the Forerunner. Fixed mine and a few friends with the same problem.

I do however have a cable problem. Sometimes my PC will come up with unrecognized USB device and my 305 wont talk to the PC, it does charge. It is the cable or dock for sure, because I have tried a different cable/dock and the 305 has no problem. This is the reason I ended up here. I hope the lock fix works for those with the above problem.

Dec 16, 2007 | Garmin Forerunner 305 GPS Receiver

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