Kenmore.. fan running but not cooling..

My Kenmore Refrigerator is not cooling now. The fan is running in the back, I can hear and feel it, but there is no air coming out in the unit… thus its not blowing inside.

any ideas??

thanks -

MArk

Thanks much for your reply. The model number is :253.6072100B Kenmore. The fan runs constant, compressor is vibrating. No cold air that is detectible. This is a refrigerator without a freezer. I had checked the compressor with my ohm meter and got a reading of between 13 and 15.

Any thoughts?
Bill

Once again thank you for your reply?