We recently went to a caravan park and were informed that in order to have television reception we would need to use the caravan park's aerial system, which necessitated installing an aerial cable directly to the park system, which they did for us and the television worked fine. However, after leaving the park we noticed that the Winegard (RFL-342 Sensar Pro) was not showing a signal strength, although it would light up but only with green dashes in the windows, and would not scan. I do not know whether the unit is repairable or what has caused this problem, other than to perhaps suspect that when the park staff installed the cable for us the amplifier unit was not initially switch to the 'park cable' mode. Any suggestions as to how to fix this would be very much appreciated.