I am having a similar problem. My power and generating light click on and off. While they click on and off I cycle through the diagnostic display. The cell voltage starts counting up from 0 and the cell current reads 0. These according to the specs should read 22.0-25.0 for the cell voltage and 4.5 to 7.8 amps for the cell current. I am going to replace the main pcb as the constant clicking is not right. Speaking with Goldline they also agreed that it is most likely the board. This would be the second board in 4 years. Goldline told me that possibly I could get a 40% pro-rated price from a local service call. Still if it is more then $250.00 I could install it myself for less money.