I recently decided to go ahead and replace a a Magneteck 6345 converter in an older Itasca Suncruiser.
I replaced it with a PD 4645. The replacement was very easy but there was an appalling sight when I remover the 6345, The area under the converter was very scorched and brown. It looked like a disaster waiting to happen. I am so pleased to have made the change. The new unit is so quiet compared to the 6345. The 6345 hummed whenever ac power was applied. I definitely made a good decision to replace the unit. The modes of battery charging will also extend my battery life. I suspect there are a number of RVs out there with the same heat problems from converters.