Water leaking inside refrigerator

Refrigerator & Freezer Repair
1

Brand:Kitchenaid
Model Number: KSF26C6XYY00
Main Symptom:
What happens & when:

Behind the back of the refrigerator liner, water is pooling underneath (what I believe is) the condenser and flowing down the back of the refrigerator panel, leaving rust stains and pooling below the crisper drawers. When I look underneath the refrigerator, no water is being discharged into the evaporator drip tray. I believe something is blocked but have no idea what…PLEASE HELP!

Error Code (if any):
Parts or tests already tried:
Photos / video link:

2

The best approach is an air tank to blow out the drain tube. If the tube has collapsed then replace the tube. If it is frozen then use a turkey baster and push warm water into the drain until it is thawed out.

3

How do I know which tube and how do I access it? Thank you very much!!!

4

Also, if you have the name of the replacement part as a reference, I may opt just to buy a new one and replace as well. Just need to know which tube to replace. thank you!