Tapping noise coming from fridge?

Question

My Amana bottom-freezer fridge is making a tapping noise--pretty consistently. Have no idea what's causing it. Any suggestions? Thanks

Answer 1

Sounds like a piece of insulation or maybe something that was on top of fridge fell behind it and is touching the fan blades just enough to make noise but not enough to stop the blades from turning.  Best thing, pull it out away from wall, get flashlight and have a look.  

Answer 2

it could be just a loose part that has wiggled away from where it should be.   It probably needs a check up anyway but if you can pin-point the noise yourself first.. that could save you some cash.