I bought my GNS-530W new in 2011 and the screen went dead just 3 months outside of warranty. My avionics shop begged, but they wouldn’t budge, so I paid the $1,500 (i.e., about 10% of the price new) to repair it. Needless to say, that’s not great customer service to have a major component fail after just over 3 years from new and then refuse to cover it under warranty. Signed an unhappy customer.