Did my M1Gold Panel Go Bad?

I've had a M1 Gold setup for the past 4 or 5 years and it's been working flawlessly.  I came home last week and noticed the keypads were off.  Turns out the GFI that the panel was plugged into had tripped and the backup battery had run out of power.
 
When I rebooted the panel I get an "Ethernet Trouble" error.  I can ping the M1XEP so it is online but not connecting to the panel (I can ping it but it won't show up using find in the M1EXP Setup in RP).  Oddly I also see the following: immediately after rebooting the panel I can get the voice chime to work but after about 30 min the voice chime stops working.  Tone chime will work but the voice will no longer work.  After leaving the panel on overnight I also get a "Fail to Comm" error on the keypads.
 
Since the serial port and the hookup for the voice module are on the same right side of the panel...I was thinking maybe the board had become damaged from whatever caused the GFI to trip.
 
Before running out and replacing the panel and having to rewire the it I was hoping there was something else I can check...not sure if the databus hub or the M1XEP could potentially be the problem...although I don't know why that would impact the voice chime.
 
Any ideas would be appreciated.  Thanks!

The first thing that  I would do is to re-enroll the devices. Then check for differences between the M1g panel and the Rp database.
 
Mike.

Rule out a power related problem by checking the voltage with a multimeter

Thanks...I always jump to the worst case scenario.  Re-enrolling the devices seem to clear everything up for now.