Sirius Stiletto 100 takes a long time to boot up

I have a Sirius Stiletto 100 that has worked fine for over 6 years but noticed that it takes longer and longer to "boot-up" as time goes on. It takes anywhere from 1-3 minutes before I can listen. Does anyone else have this problem? If so, how did you fix it. I called Sirius tech support and they were basically useless and told me to purchase a new radio. I really don't want to buy a new radio since I'm on the lifetime plan and don't want to swap radios just yet. Any help would be appreciated.

Thanks!