Blender Panel lights blink but get no sound

Model KS8560ER0

Rarely used KitchenAid blender - one day just wouldn’t run but options panel lights blink alternately. No sound. No smoke, etc. Worked one day. Didn’t work the next. Tried KA website troubleshooting to “restart” and nothing worked. There is no sign of burns, leaks, breaks, etc. Where to start troubleshooting?