Dimension One Interlude Upper Control Panel. Moisture inside has progressed to where I can only read the last digit. Local Spa dealer tells me the only fix is to replace it, and depending on the number on back of the panel, it may have to also have the circuit board replaced...at around $1,000. Since there are factory settings, is it safe to just go with it that way...at least thru the Michigan winter? Do you know if the 5 button Interlude panel can be replaced without the entire circuit board?