Note 7 replacement reportedly gone up in smoke

Reports from the US say a replacement handset has caught on fire, even though it wasn't plugged in at the time. Michael Klering and his wife apparently woke up to a room full of smoke, and Klering was later treated for smoke in halation. It follows an incident earlier this week where a Note 7 caught fire and caused an aeroplane to be evacuated on the ground. Again the phone was one that had been replaced by Samsung and was deemed to be safe.
On the other hand, if there's a genuine problem with the second batch of Note 7s Samsung is rolling out, then the South Korean company is going to have to go back to the drawing board again and try to convince users it's capable of fixing the problem.