Unplug your refrigerator before attempting any repairs. After unplugging, check to see if the compressor has a capacitor and if it does, discharge the capacitor to release stored electricity to avoid a shock. Many refrigerator problems are caused by problems with opening, closing, and sealing of the refrigerator door. Start with door maintenance to see if it resolves your problems. For issues with the internal workings of your refrigerator, check the user manual for troubleshooting and repair tips and follow the instructions.