We have a new knowledgebase at kb.egauge.net!
This article can be found HERE.
The eGauge is rated for overvoltage CAT III, covering installation on main distribution panels. Devices that experience a CAT III or lower surge may have internal, non-user replaceable fuses blown. Surges exceeding CAT III limits may not be repairable. Contact eGauge support to set up an inspection RMA if your device no longer powers on due to surge or overvoltage.