Snowy,unresponsive,distorted display before & after screen replacement

I have Apple Watch series 1, 42mm. It had showing display as snowing and unresponsive all the time and most of the time unless we force restart and after Apple logo it start to showing snowing unresponsive. We thought it could be screen issue. We replaced the brand new screen LCD+glass but it was showing normal display for few hours and charging. But after it showing unresponsive, distorted display and snowy again. In the attached two photos there are two different display is showing. Do you know what could be solution possibly please ?