https://stream.echo6.co/videos/watch/7eccdbb7-7f4a-41f7-bd5b-15df87f89151 What's inside the world's first portable CD player, the Sony D-50 (D-5) Discman? 1984 vintage! Also a look at the laser beam splitter optics, and the gorgeous service manual. Service Manual: http://freeservicemanuals.info/servicemanuals/download/Sony/d-5.pdf HIres photo: https://www.eevblog.com/2016/03/29/eevblog-863-worlds-first-portable-cd-player-teardown-sony-d50-discman/ Nobutoshi Kihara https://en.wikipedia.org/wiki/Nobutoshi_Kihara MC Frontalot Zero Day Album: http://frontalot.com/index.php/?page=cd4 Forum: http://www.eevblog.com/forum/blog/eevblog-863-world's-first-portable-cd-player-teardown-sony-d50/ EEVblog Main Web Site: http://www.eevblog.com The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2 Support the EEVblog through Patreon! http://www.patreon.com/eevblog EEVblog Amazon Store (Dave gets a cut): http://astore.amazon.com/eevblogstore-20 T-Shirts: http://teespring.com/stores/eevblog 💗 Likecoin – Coins for Likes: https://likecoin.pro/@eevblog/dil9/hcq3 Tue, 12 May 2026 13:12:12 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/7eccdbb7-7f4a-41f7-bd5b-15df87f89151 All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.