Installed a new 722k a week ago in my bedroom worked fine for two days then the past 3 days the unit fan will switch on around 7am and will not turn off unless you reset the box then it works fine until 7am the next morning when it switches on again. I've left it alone all day and once it turns on the fan will just continue to run for hours and hours even when you are not using the box or recording anything. I changed the software update time to 3pm to ensure that wasn't a contributing factor. Just wondering if anyone has experienced similiar issues if it might be a current software bug or if I should just replace the receiver?