My salt chlorinator is not working. For a long time it would make chlorine however the display board was not working. Now it no longer makes chlorine. Took the salt chlorinator to the pool store and they tested and confirmed it powers on. I replaced the display board and fuse and still did not come on. After a few hours I went back and looked and the display was on and I had a few errors. Went back and checked later and off again and I have not see any light or display in over a week. Fuse is good. Any thought of what the issue is?