2yr old ROV stopped connecting


Our OpenROV (2.8) has been operating great for 2 years. When we tried to boot it up last week to get it ready for our new season, we cannot connect to the unit over ethernet. We have tried different cables, adaptors and even computers. The IP address of the unit will not ping.

It seems as if it could be the:
Ethernet to Power converter
the tether wire to the ROV
Power to Ethernet converter
The Beaglebone
The SD card.

I presume the Beaglebone cannot be removed since it is sealed into the electronics package. Since other than the computer and ethernet cable, we have no other spare parts we can swap out. Any suggestions on how to solve the problem?