[MENTION=392644]sdmc530[/MENTION] How close are those fans? Airflow nor temps should be an issue, but RF interference from the AC fan motor might be. Though I'm having trouble imagining the fan being that close. Have you turned them off to see?

Be sure all your devices are connected before you start the timer Though from your description that doesn't seem to be part of the problem.

I certainly wouldn't be shy about doing a device reset. That does seem to clear up problems that should be a problem.

And don't be shy about calling Garmin back either. They have a flat rate repair for out of warranty devices. It really isn't repair though, they just exchange yours for a refurb'd unit for a sometimes very minimal price compared to the MSRP of the device new. If they aren't able to resolve your issue and don't mention the flat rate repair, then ask about it.