Problem with PCB circuit
I see some pins not terminated properly. I have been using this schematic for a while now without seeing any failure in almost a thousand boards produced:



Besides this, I'd suggest some minor routing changes. For ex - You are routing this DC line too close to high voltage ac line:



You can rearrange the components to get a better isolation between ac and DC.

Another issue that I see is a bad implementation of GND plane:



You should make the ground pour in DC region only.