The current channels affected at KOLD, KMSB, and KTTU. This is not a blackout, nor does it have anything to do with negotiations, Richard. These outages typically happen when there is an issue with the uplink center that broadcasts the locals to your area.
I don't know if the CSRs have specific details, but the probable explanation for why some work is that they are going through a different collection of gizmos to get uplinked to Dish.
Local reports indicate the problem was caused by a power issue at the transmitter site used by several channels. The problem was further aggravated by a failed backup generator and the several hours needed to access the remote location by repair crews.