While trying to analyze a stream or update a transponder list (or simply trying to tune a transponder) the application doesn't power my unicable LNB. I have to turn on another receiver and then I am able to do anything with Transedit. The similar situation is in DVBViewer but there is option Retune on missing stream after (sec.) and it works with this parameter set to any value > 0. But in Transedit there is only choice Retune attempts which in fact doesn't help much in such a case.