Question about Garmin Forerunner 305 GPS Receiver

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Wont turn on

It only turns on while on cradle, as soon as I disconect from cradle it turns off. it displays battery charging and battery charged complete messages.

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  • charl9 Mar 05, 2009

    As soon as I place it in the cradle the PC says new device detected. But as soon as I remove it from the cradle it dies. Hard reset did not help,

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These units seem to be suffering from a bad connection 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/dismantleforerunner205 To 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 Nov 13, 2009

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Posted on Jan 02, 2017

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hialeahnero

probably not. If your phone will not turn on at all with a charged battery then the charging cradle won't help. When you try to turn it on, you get no lights or anything?

Check to see if the prongs for the battery connection point are good. Try pushing down on the battery and powering up the phone. Try this with both batteries if you can.

Let me know how that goes and we will try to figure this out.

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