Chicago Tribune reports that part of the issue is CBS Sports Network:
http://www.chicagotribune.com/business/ct-dish-cbs-1206-met-20141205-story.html
"We are disappointed that CBS has chosen to black out their local channels, but remain optimistic that the channels will return quickly as both sides are continuing to work tonight to finalize an agreement," Dish said in a statement Friday night. In its statement, the satellite TV provider said the impasse is due to "the unrelated" CBS Sports Network but declined to elaborate. CBS-owned Showtime remains available and is not subject to the blackout, according to Dish
I wonder if CBS wants sports network in a lower tier like 120