I just replaced the T15 for the 3rd time in 4 years. Now that the new one is installed the board is acting up. First thing in the morning I reset and the salt level reads 3300 which matches independent testing. It seems to work fine for up to an hour and I go to work. When I get home all lights are on (except 'generating') and the led shows "-pcb-". This has happened 3 days now. The board passes a visual inspection and other than needing a little acid the chemistry is ok. It is a Mineral Springs unit and if needed I can post more specific info. I'm hoping for a diy solution....