If you are having issues with your radio intermittantly , you can try a factory reset.
1) Press & hold the MENU button until "Press SELECT key to reset" is displayed on the screen.
2) Press the SELECT button.
Your radio will then automatically re-scan any chanels, and you will need to re-save any preset stations you had stored, in addition to any alarms you have previously set up.
If you are still having issues, and the item is under 12 months old, you can return it to the store of purchase with proof of purchase for an exchange or refund.