I own a Kenmore Elite Coldspot model 10651143112. From the moment I bought it, the fridge portion ran too cold and would freeze things on the top shelf if they were placed too close to the air diffuser/air vents. Just recently though it has gotten far worse and now freezes everything placed on any shelves in the fridge.
Here is a view of the air diffuser: https://imgur.com/gallery/8fL6geC
This is what I have been able to determine so far...
There is a loose spring inside the air diffuser. You can't quite see it in the photo but it looks like the spring was supposed to hold closed the vent inside (a portion of that internal vent can be seen in the bottom photo). When the spring came loose, the vent is now stuck open and blowing cold air nearly non-stop. This is just a theory though. I know for a fact there is a loose spring in there and there is a vent that I can push closed with a pencil which opens right back up when I stop pushing down on it. But whether this is the central problem or not, I don't know as I don't have much experience in this area.
I can improve things slightly by covering up most of the vent with duct tape, but even this doesn't fix the problem. Is this safe to do?
I'm hoping someone can help give me directions on next steps. I can't seem to easily access the air diffuser internals to see if I can easily put that spring back where it's supposed to go. It does look like there may be a screw hole in the top left of the air diffuser but I'm not sure what is inside that hole or whether it will permit me to access the area where the spring is loose.
Is the air diffuser even user-repairable? Or should I just pursue replacement of the entire diffuser (assuming that even IS the problem)? Am I able to remove the diffuser cover while leaving it mounted, or do I need to disassemble a lot of stuff (including maybe some stuff in the freezer or back of the fridge) to be able to unmount the diffuser?
(On a much, much less important note, I can't help but notice that in the spot where the air filters go, there is a large amount of space to the left of it where the air will come out without even passing through the filter. Are buying those filters a complete scam then, because half the air doesn't even go through it?)