In this episode, David explores the inner workings of a 42mm Generation 3 Apple Watch, sent in by a viewer. The watch was damaged, specifically the screen or digitizer, presenting the perfect opportunity to take it apart and explore its internal components. The first step is to delicately lift the screen and digitizer assembly. This involves careful heating to soften waterproof seals and precise work to avoid damaging the glass.
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As we progress through the teardown, we gain insights into the design choices, such as the use of gold foil-like material for insulation and the need to heat the aluminum back for disassembly. We take a closer look at the Taptic Engine, understanding its role in providing vibrational feedback. The numerous screws and connectors showcase the watch’s meticulous engineering.
Throughout the teardown, David faces challenges reminiscent of the iPhone 3G assembly. Tiny screws and delicate parts must be handled with absolute precision. We uncover details about the Apple Watch's crown mechanism, which looks like it may have an optical sensor installed underneath for rotation measurement. The video provides a detailed tour of various components, including the battery, biometric sensors, and the Taptic Engine, highlighting the impressive miniaturization achieved in this device.
The teardown concludes with an examination of the motherboard, emphasizing the multitude of connections, ribbons, and the optical sensor for the crown. While some components remain adhered or shielded, David chooses not to destructively open the RF-shielded system-on-chip, acknowledging the repairability challenges. The teardown sheds light on Apple's design priorities, putting aesthetics above repairability, a characteristic synonymous with the brand.
