Finding empty attribute field with ArcPy search cursor?

I'm trying to iterate through all fields in my feature classes to find which fields are empty.

I have tried using the SearchCursor by borrowing bits of code from other answers.

This is what I have:

if fieldList:

with arcpy.da.SearchCursor(fc2, fieldList) as cursor:
    for row in cursor:
      if all(row)== NULL:
            print row.name + "is empty"

Where am I going wrong?