we had our dish network svc shut off for about a month..worked fine..when we had service turned back on yesterday..we cannot get proper signals..show comes on then intermittent screen pops up..dish network says probably obstruction..how could we have had perfect service a month ago..trees would not have grown that much...dish network said they could sent tech out but would charge as we own our own equipment..does anyone have any ideas what we could do as we cannot get help from dish network tech support

it does sound like an alinement issue.
try a check switch, and see what your signal strenght is.
Has to be at least in the 80's. high is much better, we like the 90's +