My son was mowing with our Husqvarna YTH20K46 which has been running perfectly. No issues whatsoever, starting or running. He had just started mowing and realized he had left the mulching cover on. He disengaged the blades, shut off the mower, removed the mulching cover and went to restart. Nothing. No click, no display in the hour meter, no nothing. The battery is not too old and checks out at 12.7v—and again, nothing has been acting strangely, not difficult to start or run at all. I confirmed that same voltage coming in to the solenoid. My gut says there's a safety switch or mechanism somewhere that thinks the blades are still engaged, or some other clearly electrical problem going on. Can anyone point me in the right direction?