I have heard of turning these units upside down for a few days and having them work. Tried it a few times with mixed results. Best was one that started working properly but it only lasted a few weeks. I ask the people that rebuilt these units for us about this. The tech there told me this was because many times the inside of some of the tubes would plug up with solidified chemicals, sodium bromide IIRC, and turning the unit over would sometimes dislodge these plugs. In his experience the improvement, if any, was short lived with some exceptions that lasted for extended periods. Couldn't hurt to give it a try but I would test it with the trailer setting in your driveway. You wouldn't want it to fail during your vacation.