Fridge was working.
Emptied it and cleaned all shelves and drawers.
Pulled it out and cleaned behind and underneath, tilted about 20 to 30 degrees to vacuum coils.
Fridge was unplugged overnight.
Pushed it back and plugged it in and now it is not getting cold.
Lights are on, fan is running.
Compressor relay clicks and I hear a buzzing noise for about 15 seconds and it stops.
Relay click and bussing repeats about every two minutes or so.
I looked for anything obvious that I might have screwed up, no disconnected wires and no damaged refrigerant lines that I can see.
What could be wrong?