The radio can not be powered on.

Analysis
1,The battery may be improperly installed.
2,The battery may run out. 
3,The battery may suffer from poor contact caused by dirtied or damaged battery contacts.

Solution
1,Remove the battery and attach it again.
2,Recharge or replace the battery.
3,Clean the battery contact s. If the problem can not be solved, contact your dealer or authorized service center for inspection and repair.