I appreciate your help. I tried it and it didn't work. I have tapped (gently) on the desktop with the radio in all three axes trying to vibrate the contacts after spraying. I have repeatedly inserted and wiggled the power plug. So far, it refuses to come to life on the battery, but continues to operate as long as the power is plugged in. May have to lay hands on it for healing or tossing. I haven't decided which yet. 73, dave, K4TO