Thanks 2112 for the response. It never crossed my mind to check the breakers like that so now I have learned not to be so hasty and assume it's the converter. I read so many posts here on 'the lights aren't working right' or the 'slides aren't working right' that I hope this enlightens a few other folks like me as to the simple things we overlook and go right to the complicated fixes...especially in all things electrical. 12 volt RV systems seem to be one of the most misunderstood issues here.
His breakers were very weathered and likely failed/weak because before he replaced the converter and breakers his slides would work intermittently, really weird and a classic malady. I hope this helped others understand things better.