On Wednesday, September 2, 2015 at 6:42:40 PM UTC-7, David Farber wrote:
I bought this item last year...when I plugged in the AC cord into the adapter.
Kaboom and poof.
...have received the replacement which I haven't plugged in yet.
(When I do, it's going to be in a series with 60 watt light bulb!)

The light bulb in series is a bad plan; the power supply will, in order to deliver
regulated output power, draw higher current due to the lower input voltage,
and fry the fuse, even if it isn't faulty.

Most common problem that makes the fuses fry: shorted diode in the AC
rectifier (usually full bridge).