Garmin G5 reset issue

[Datadriver]

I recently had an avionics upgrade on my Arrow that included a G3X and G5. While on a cross country, I had an alternator failure and landed. As the mechanics worked the issue they wound up cycling the master switch on and off several times over just a few minutes.
At this point the G5 did not power on, and the G3X was throwing up ATT NO COMP, HDG NO COMP, IAS NO COMP and ALT NOCOMP warnings. A call to the install shop informed me that this is a "known issue with G5s, in that frequent power cycling can cause the unit
to not power on. The work-around is to remove the backup battery from the G5, at which point it will power itself on once more." That worked for me, and with my alternator field wire re-attached I was off and flying once more.

I'm putting this out there in case other owners experience the same issue.

 

[ArrowFlyer86]

I've had that happen with my arrow's G5, usually during cases where it takes a few tries for a hot-start to catch so I flip the master on/off in between attempts. There's an easier solution for my case though: just hold down the power button for 10 seconds and then it boots up just fine.

 

[JOhnH]

There's an easier solution for my case though: just hold down the power button for 10 seconds and then it boots up just fine.

This worked for me the one time I had a problem with the G5.

 

[Gary Ward]

I had it happen to one of my G5 when I first got them in 2018. I was not messing with the power on or off when it happened. It was a Sat morning and I left a message at the avionics shop. Lo and behold the president called me back with in a half hour. By then I got restarted by holding the button in. He said that is how you do it and a firmware update will fix it.
It’s never done it since with over 1400 hours on them.

I have been back to the avionics shop numerous times and received software and firmware updates since 2018 all free.

 

[eman1200]

{-red X-}

 

[Datadriver]

I've had that happen with my arrow's G5, usually during cases where it takes a few tries for a hot-start to catch so I flip the master on/off in between attempts. There's an easier solution for my case though: just hold down the power button for 10 seconds and then it boots up just fine.

I will try that if it happens again. Thanks