Just noticed that there is no green power light on my control panel. The display works showing temperature and salt concentration, but there is no generation, i.e., no voltage or current to the cell. Removed cover and checked voltage. It's 240 VAC at the terminals. I have the Goldline 066012C-1, Rev C, circuit board. 20 Amp fuse is good. Unit is six years old and the chlorine cell was just replace last season and recently cleaned. Generator has been working fine until today. Do I need a new board?