Most people forget the drain starts in the freezer. Look at the back wall of the freezer compartment. There’s a small channel or hole at the bottom center. That’s the top of the drain tube. If that’s frozen solid, your fridge will leak.
But in 9 out of 10 cases, it’s not a major breakdown. It’s just a clogged defrost drain. how to unblock fridge drain
Try this fix once. If you still have standing water in the fridge or freezer after clearing the drain, the defrost heater or control board may have failed. That’s a repair call. Most people forget the drain starts in the freezer