I installed a new dish pointing to 61.5. I was getting all the Indian + English channels. Now for the last one week, Half of the Indian Channels(ajtak, sahara, sony, tvasia, sports - cricket) show 'No or Bad Signals'. I have tried rescanning but no luck. It does show EPG for those channels but no audio/video. Is there anything else i can do before I go up the roof and check the dish?