I use a 3DR LEA-6 GPS receiver on my 3DR Hex. It's connected to an APM2.5 running 3.0.1 firmware
I always use telemetry and normally, I see 10 to 14 satellites. If it's less, I usually wait a bit in order to acquire more before taking off. When I'm in the house tuning things or setting waypoints, I normally get a fix of 5-7 satellites depending on which part of the house I'm in.
For the last week or so, I've only been getting 5-7 satellites outdoors and no satellites at all indoors.
I recently switched over to a Taranis TX with the FrSky X8R receiver and thought perhaps the new receiver was causing the problem.
Today I disconnected the Taranis receiver to see if it would make a difference. I also disconnected my 915Mhz telemetry radio so that only the APM and GPS were powered.
Today it's worse.... Now it won't lock on any satellites. The flashing blue light never comes on and MP shows zero sats. I tried it indoors and outdoors with no luck. I even swapped the GPS to APM connector cable with a spare I had, but the GPS still won't lock on any sats... Just to make sure there was no local interference affecting things, I fired up my Magellan hand held GPS unit and placed it beside my Hex.. The Magellan works normally and sees satellites.
Could something in the APM be causing this, or is it time for a new GPS? If so, is this a common failure, or am I one in a million :)