The Macintosh Classic was released by Apple in October 1990 and was very popular with home users and schools. Now more than 30 years on, unfortunately this model is prone to battery and capacitor leakage, often with disastrous results. Thankfully Kai Robinson found a way to breathe new life into those irreparably damaged Mac Classic logic boards. After his success with the Macintosh SE Reloaded project, Kai has reverse engineered the Mac Classic and produced his own logic boards. Today I will continue (and hopefully finish) assembling a Macintosh Classic logic board FROM SCRATCH. The Macintosh Classic Reloaded project: https://github.com/kr239/Macintosh-Classic-Reloaded The Macintosh SE Reloaded project: https://github.com/kr239/Macintosh-SE-Reloaded Capacitor replacement guides: https://recapamac.com.au/ If you enjoy the content and would like to make a small donation, you can do so here: https://www.paypal.me/branchus Tools/Products used (paid links): PCB Holder: https://amzn.to/3xDbNsS Soldering station: https://amzn.to/31QvCMW Budget alternative soldering station (uses T12 tips): https://amzn.to/3hwjUl3 Soldering iron tip (T12): https://amzn.to/2L3Juwt Another budget soldering iron: https://amzn.to/3xCBR7a Helping hands (third hand): https://amzn.to/31JUhVL Fume extractor: https://amzn.to/2HuG0oU Solder (0.5mm): https://amzn.to/3hFotd8 Flux: https://amzn.to/2Z7XoHQ Hot air rework: https://amzn.to/2ZjYzPH Budget alternative hot air rework: https://amzn.to/3fN1ZU7 Microscope: https://amzn.to/2HnSI5H Microscope camera: https://amzn.to/2TdSYsZ Budget alternative microscope: https://amzn.to/2PmRagt Ultrasonic cleaner: https://amzn.to/2ZJKFtB Ultrasonic cleaning fluid: https://amzn.to/2YusoQQ Solder wick: https://amzn.to/2L1Xgjg UV Solder mask: https://amzn.to/2ZnK1yu Precision tweezers: https://amzn.to/2NqkhPz Swann Morton curved scalpel blades: https://amzn.to/2oN7qNn No. 3 Scalpel Handle: https://amzn.to/2ngcx85 Kapton heat resistant tape: https://amzn.to/2xBnTso 28 AWG enamelled magnet wire (thick): https://amzn.to/32cRsLf 34 AWG enamelled magnet wire (med): https://amzn.to/35Bx20D 40 AWG enamelled magnet wire (thin): https://amzn.to/2J2Aisf T15 Torx (for opening compact Macs): https://amzn.to/2ZJKWN3