I purchased this unit about a month ago after asking for recommendations on this site. I am impressed with the features it has but it isn't the most user friendly device. The manual isn't all that great either. I have not been able to get it to keep time. I have tried all of the clock setting options: Manual Setting, Analog Auto Setting, Digital Auto Setting for various channels, but whenever I switch it to standby the correct time is displayed on the front panel for about five seconds and it then displays --:--. I noticed that every few seconds the unit emits a whirring noise, (fan?), for a few seconds, then is silent and then repeats this sequence. I have studied all of the information on this unit that I can find on this site without result. Have I missed something or should I return it?