hi guys this is my first post so please go easy on me lol. i just bought a garmin 310 deluxe from ebay a few days ago at £18.50. only fault i can find is that it wont turn on or of with the power button on top right of device. to get it to turn on it needs to be connected to eigher the usb cable to pc or 12volt dc supply then away it goes. and to get it to turn of the usb or dc lead needs to be pulled out then unit says closing down in 15seconds but it gives a option to run on battery at this stage and i have run it on battery after removing the usb or dc also the battery is charging fine as i have run it down and plugged in to charge and it does. any ideas guys what could be wrong thanks for your replys in advance
