Here's a further update... it appears to be the ball sensor for sure as well as potentially the inner ball microswitch (have zero idea how to get to...
Worked quite a way through this- completely dismantled chute, cleaned microswitches - sanded and cleaned entire metal strip that runs length of chute...
Thats the only bad thing about the nextion is the cost. I'm using one to control my automatic door via an ESp32. also planned is control of the video...
Have you tried the Nextion Display connected to an arduino/ESP32. if fitting into a case all you need is a connector for the sensors, and power. Then...