Why is my Samsung freezer running warm instead of freezing?

What people tried

Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.

1. 1
   Testing parts with a multimeter for continuity
2. 2
   Calling warranty service to have a technician come out
3. 3
   Unplugging and manually defrosting the entire unit
4. 4
   Clearing out ice and drying the interior before restarting
5. 5
   Checking and cleaning coils and drainage plugs
6. 6
   Replacing components like the defrost thermostat

In their words

Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.