Old electronic devices with surface mount electrolytic capacitors are often affected by capacitor leakage. Here is a brief tutorial describing the process of replacing old, damaged capacitors on a Macintosh Classic II motherboard. Capacitor replacement guides: If you enjoy the content and would like to make a small donation, you can do so here: Tools/Products used (paid links): Digital Multimeter: T15 Torx (for opening compact Macs): Microscope: Microscope camera: Budget alternative microscope: Soldering station: Soldering iron tip (T12): Budget alternative soldering station (uses T12 tips): Hot air rework: Budget alternative hot air rework: Helping hands (third hand): Ultrasonic cleaner: Ultrasonic cleaning fluid: Fume extractor: Solder: Flux: Solder wick: UV Solder mask: Precision tweezers: Swann Morton curved scalpel blades: No. 3 Scalpel Handle: Kapton heat resistant tape: 28 AWG enamelled magnet wire (thick): 34 AWG enamelled magnet wire (med): 40 AWG enamelled magnet wire (thin):