I found out when my 2720 fogged up that there are some ventilation holes hidden under the slider on the back of the unit. If you slide the holding plate down as if you were mounting the unit at an extreme angle you will find 3 tiny pinprick holes and by sliding it down they are now open .
Place unit in sunshine with the holes open or near radiator for a while and voila condensation gone .
I realised that when my 2720 is in the car I use the angle which uncovers the holes then when its on the bike the holes are covered up ,thats when the condensation shows ,never in the car.
Perhaps I shouldnt have found this out then I could have a shiny new unit from Garmin :yahoo:
Place unit in sunshine with the holes open or near radiator for a while and voila condensation gone .
I realised that when my 2720 is in the car I use the angle which uncovers the holes then when its on the bike the holes are covered up ,thats when the condensation shows ,never in the car.
Perhaps I shouldnt have found this out then I could have a shiny new unit from Garmin :yahoo: