I have an original '92 Dometic refridgerator. It suddenly stopped working on A/C but does still work on LP Gas. I tested the A/C heat strip and it measures 40-Ohms per spec - just no A/C at the terminals. I am guessing that means the controller board, but that is a $250 guess. Dometic doesn't seem to have any tech support anymore. Anyone solve a similar problem or know a parts place that will actually help you debug?