Report "I have a Maxent 50 " plasma TV that I am trying to sell. Prospective buyers are asking me questions like "is it 720 vs 1080 Pixels"??What year is it?(I think 2007) How do I find out? I lost the operation manuel. All I know is the Product name says mx-50X3 and model # P500550HM8. Is there a way to find out a fair asking price? Thanks so much"