Before throw parts at problem....do some testing to ID the issue
Original converter since 2008?
Here is Service Manual for that 6300...tests to verify converter functions
Upgrade for that Brand/Model converter
Fridge Clicking sound when plugged into AC Power.
Any error codes on fridge?
Clicking would be the AC Relay on circuit Board (DC triggers it) to allow AC Power to fridge element
When plugged into AC Power...fridge in AUTO and on AC
*turn off AC to the converter...(many times the AC to converter is piggy backed on Circuit Breaker for something else)
With AC off to converter...fridge still CLICKING??
Service manual for the N6XX/N8XX series