The power converter on my 2002 HR has gone out 3 times. About every two years. It is a Inteli Power 9100 model#PD9155 55 amp. with charge wizard. It has always kept the batteries charged without water lose or very little. I do keep it hooked to shore power most of the time. Any thoughts on what may be causing the failures and where is the best place to buy? Will call Progressive dynamics Monday to see if they can give any clues.