I have a VNH5019 dual motor driver shield that I used a long time without any problems but after a while one of the VNH5019 chips started to act strange. The leds are acting weird when there is no motor attached and when I try to move the motors with a pwm pulse both the leds are on.
What could be the cause of it. There was no magic smoke, the driver doesn’t get hot and it still sorta works.
Images of the leds are found here: http://imgur.com/a/5SKa0