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[October 31, 2022]


A new toy arrived a few months ago and I finally got around to installed it tonight (read removing the old GTN650 and sliding this one in). I am upgrading to the Garmin GTN650xi. There was nothing wrong with my 650, but my work has interesting ways of rewarding employees! Sad things is they would of bought me a 750xi, but I had no way of putting it into my panel without MAJOR rework and some compromised redundancy.

I fired this guy up tonight to get the System ID off of the unit so I can get my database subscription transferred to it. It is LIGHTNING FAST! Boot time is amazing. The speed of changing menus is amazing. So far I am super impressed!


When I was working on my autopilot installation the other day, someone mentioned if I had the LPM (Lightning Protection Module) installed on my G5. Never really heard of it. I talked to a few people around the airport and apparently there is a hardware issue with the G5 where it will leak voltage from the internal battery to the main POWER1 connector (pin 7). I also heard of some leaking of voltage onto the can bus. I have had this unit for many years now and have had no issues, but the CAN bus is new. I was pretty against adding it, since it costs $100 (p/n: 010-12493-11). However, I heard NOT adding it could cause the battery to fail, which replacing it is $235! I decided to do the "smart" thing and replace what I had with the LPM. I find it actually funny they call it the Lightning Protection Module. Seems more like the Lawsuit Protection Module since it fixes a manufacturing flaw with the G5.


Sort of a pain in the ass to solder it in place and get it wired up, but after the huge ordeal of installing the new autopilot, this was a walk in the park.


And this is the great news of the night - CAN bus was alive and everything was pinned out and wired correctly the first go!

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Last Modified: May 19, 2024