A little late on this but just went through the same issues on a much newer Dreammaker. The light flashing on and off and the top side controller not functioning properly. In my case it wasn't the circuit board. Replaced the entire top side controller. The new ones are a definite improvement over the originals. You can purchase them from INYOPools.com cheaper than you can from Dreammaker. They ship direct from Dreammaker so it's the same part. Easy to install.