My local Sam's club has a floor model 56inch JVC rear projection HDTV for $750. Model # is JVC AV56P575. Picture looked fine, but we couldn't get the sound to work for some reason, probably just a setting problem. Assuming the sound problem could be resolved, should I buy it or pass on it? The manager thought it was on the floor around 3 months. BTW, it's a standard rear projection, not a DLP.