Best bet would be to buy yourself a new brand name LCD tv which will have a digital/high def tuner built in. Concertone prone to failure and I personnally would replace rather than repair anything with Concertone name. We have had LCD in our 2006 die an early death as well as Concertone receiver in 2008 Cardinal. Forest River would do itself a favour if they did not install anything and just give a credit towards a name brand system.
They cannot even wire speakers correctly as I had to correct in both our units. Rv's otherwise are good units
2008 Cardinal 30RKLE 5th wheel sold
2006 Rockwood 2607, 2001 Traillite
55 nights 2009, 53 for 2010
44 for 2011, 38 for 2012, 35 for 2013, 51 for 2014