4moms bassinet ISSUE FIXED

My bassinet having have issues , when I would turn it on it would run for 2-3 secs then cut off , most vids on YouTube would say sensors are dirty or bad ground wire , I checked sensors and wires are were good , black wheel under sensor tho seems faded white , I put white nail polish on black wheel under sensor and worked like a charm , YES I did clean my sensors and took off excess nail polish on top that I accidentally dropped