You can check for a blockage by feeling the coolant tubing when the fridge is on. The tubing should be warm to hot. If the tubing suddenly turns cold your blockage is at that point. You can try taping that point "gently" with a piece of wood. This often works. As someone else mention you can also remove the fridge and tune it upside down for a day or two but that is a lot of work. Try lightly taping as I mention above first.
Use the diagram below to see what areas should be cool and hot. The coolant cools as it flows back to the absorber tank.
Good luck and repost on your progress.
-Tom, W3TLN
