Recently I had the opportunity to repair a mini-frig which had been thawed out with an ice pick. The owner knocked a hole in the evaporation plate. Find the hole and repair it with epoxy. Vacuum out the system. Recharge to between 5PSI max and 0 PSI minimum.
Today I been busy working on a couple of window units to be donated to a small church out in the country yall. I hotwired one with a bad control and I simply added a receptacle plug on the other. Both work fine. Took a few videos: