Why does the battery of my A73 not charge when the AC adapter is plugged in?

It is possible for the battery of the A73 to become so low that recharging does not take place when connected to the AC adapter.

Please try the following sequence:

 
1. Unplug the AC adapter and unplug the DC plug from the A73.
 
2. Slide the power switch (located on the back side of the A73) to OFF and allow to sit for 10 to 15 seconds.
 
3. Slide the switch back to ON.
 
4. Connect the AC adapter again and allow to charge for 45 minutes or more.  The red charging indicator below the volume knob should come on during this time.
 
5. With the unit partially charged, it should power on by pressing the volume control knob on top the left top of the unit.  Continue charging the battery until the full charge is reached (when the red charging indicator goes off.)