I know this is an old post however I want to THANK KyleR for suggesting disconnecting the Amplifier. I have had my Tablo 2 tuner since March 2016 with no major problems… every once in a while I would get Loading please wait… then about 3 weeks ago I was watching Live TV and it went to loading please wait for a long time. the TV Guide was updating as the time was going by and finally was get most of my channels back with no problem. I have been working on this issue with Tech support and after buying a new hard drive that they suggested me to do and getting no where else with them, I decided to search the community. Found this thread and read through it. Decided to give Kyle’s suggestion a try… I was having a problem with 4 of my channels and when I disconnected the Amplifier I am able to get the main channel i was having an issue with. the other 3 channels I am not worried about… I don’t watch them.
Thanks again KyleR