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Re: Garmin 305 Edge and GSC 10 not receiving one another
Solution copied from Garmin
Pairing the Edge 305 and sensors
Once you have installed the Garmin Edge 305 and the
cadence sensor they need to be paired. As they communicate wirelessly
with each other the Edge needs to connect to each sensor before it can
receive input from it.
The initial pairing needs to be done away from other
wireless systems this allows the Edge to pick up the sensors it is
supposed to be monitoring. This is a little like black magic, but it
seems to work quite easily.
The cadence sensor has a small press contact which puts the sensor into pairing mode. The HRM just seemed to connect by itself.
Subsequent pairing is much faster as the Edge 305 seems
to remember which sensors it is paired with. If you have problems or
need to change one of the sensors then you can use a setup feature to
either turn the sensor off or to re-pair it.
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Soft reset : hold mode and lap/reset buttons for 10 seconds Hard reset : device should be powered down, hold start and mode buttons for 3 seconds then pulse press the lap/reset button.
After soft reset, you need to hold start button for up to 10 secs before it starts.
After hard reset, you will loose all your data, including profiles
Now if this does not work, you should check battery. Does the device charge when plugged on PC ? If it does not, either battery is out of order or the contacts inside the device re broken. This may happen if device is used in continuous vibrating environment like mountain bike.
Changing battery or fixing contacts issue is explained there :
OK, There is a battery problem where the contacts become loose within the unit, i opened mine and followed the instructions i got on this site...MTB gurublog If you decide to do so..however if the 305 is in warranty contact garmin.com and ask for new unit... they accept the problem is widespread.
There is a generic battery contact problem in the body of the gps, same in 305...this link will show you how to remedy it..MTBGurublog i have done it with my 305 and now do not have the shutdown anymore.... But, before you perform surgery try a full reboot... turn unit off then press mode and power together... unit will ask if you want to delete data..select yes and then manually insert all data again
Had the same problem. Here is how I fixed it. 1. Changed the battery in the cadence sensor. (GSC10) 2. Turned on my garmin 305 edge outside to acquire satellites (probably not nec but did it anyway) 3. Pressed reset on the GSC10, saw red/green flash (what order?) 4. Here's the missing step: On the Edge unit, go to SYSTEM. 5. Scroll to bottom, choose ACCESSORIES. 6. On acc. page, go to bottom, under Cadence Sensor, to the option RESTART SCAN. Press That. Now your cadence and speed should work.