Originally Posted by VinceU
I've read it here in the forum that rattling the rear coils can sometimes breakup a debris blockage inside. You want the evaporator bends behind the freezer but because of the close quarters in that space maybe the lower coils in the bottom is all you can reach. Its free and might work. Use a wood dowel such as a broom stick and shake as high as you can reach.
Worked well on my unit. Tech rapped (pretty sharply; smacked it pretty hard) on the coils with a rubber mallet.
That was two years ago, and no problems since.
BTW, I've been told that a total replacement on mine would be around $5K. OUCH!!