Glad to find a place like here. It seems to have a lot of resources to help someone like me.
Yesterday I found our refrigerator is not working. After around 10 hours, both compartments have a room temperature. I found the following things:
1. condenser fan is running very slow (1 rotation per second)
2. compressor is hot but touchable with hand.
3. condenser coil is only a little bit warm.
4. low pitch humming sound comes from the middle section of the frige.
The image is here
What could be the problem? Any help will be appreciated!