Thanks for your input everyone. I opened the top and sure enough found that one of the 5 amp fuses on the sideboard was blown. I replaced the fuse with one from radio shack and am happily listening to Charles Brown on my DNA .5 as I write this. I guess for now I'll just wait and see if this happens again. In the meantime, is there any reason why the radio shack fuse would not be as good as a fuse from McCormack? Thanks again.
