Been having issues with certain channels doing the puzzling effect thing. Tried the system refresh thing to no avail. Spoke to CSR who tried to send a signal and he could not talk to the box. Waiting for a tech to call me back. This issue seems to have started 3 weeks ago when we had a major storm. I believe the Distribution Amp at the street might be the culprit. Internet is not affected at all. Just want to know what is an acceptable Downstream Power and SNR reading ? I am getting Qam256 with an SNR of -41.1 on tuner 1.