The TV, clock, etc. are not unloaded like the transformer I asked about. I
don't know if it is safe to leave an unloaded transformer plugged in, so I
asked. I placed a resistive load across the transformer to keep a slight
load across it, but not being sure if this is OK or not, I decided to
unplug
the transformer for safety.



Look at it this way, there are millions of unloaded door bell transformers
in the US.
The only time they are activated (loaded) is for about 2 seconds when
someone rings the bell. Mine usually rings once a week for pizza and a
couple of times for visitors.

The transformers will draw a slight ammount of current so you may save a
dollar or two each year if you unplug it.