Recently I have had several issues with 120v ac inputs in Smartrise C4 controllers. They keep breaking and damaging the back of the boards. I discussed that with an engineer who mentioned the AC inputs are not even safe and potentially can catch fire because of wrong and unsafe capacitors.
It looks like instead of safety X2 capacitors, very small unsafe capacitors are used.
I compared Smartrise ac input with a Thyssen TAC-50 ac inputs, and looks like the Thyssen controller has much bigger safety capacitors comparing to Smartrise board. Is it only me having this issue with ac inputs or others also have seen that? I have attached a picture of both boards.