Hi thanks for the question.
When you pulled it out to clean the back was the compressor and the fan motor going.
Yes thats the chubby black thing.
Was it warm and going.
Check the freezer coils for frost.
If the coils are frosted up you have a defrost problem.
Great So its the dust coils causing the problem.
Its a very important part of the cooling process.
Thanks and God Bless.