Amiga 500 Power Supply Repair Attempt

Jan Beta April 19, 2023
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Jan Beta

@janbeta

About

Hi I'm Jan. I tinker with electronics and enjoy vintage tech, mostly computers and consoles from the 80s and 90s. I also love to tinker with elderly hifi equipment and musical instruments from time to time. I'm not responsible for anything you do to your electronics and/or yourself. Do all repairs at your own risk! I'm not a professional at all. If you want to support me, subscribe to my channel, give me a thumbs up, comment and/or follow me on the usual social networks or even consider a little donation. Links are below and in my channel page header. Thank you.

Video Description

I'm trying to repair the power supply that came with the early revision 3 Amiga 500 from the previous episode. // Kindly sponsored by my favorite PCB manufacturer PCBWay! https://www.pcbway.com/ Amiga 500 Power Supply Schematics: https://github.com/archstanton1862/A500-PSU The Early Amiga 500 Video Series: 1) Amiga Archeology: https://youtu.be/EkFMPe5c-Gk 2) Fixing the Main Board: https://youtu.be/D4a-9DVjnng 3) Restoration & more Fixes: https://youtu.be/kzlaKVmBj_k 4) Restoration Progress: https://youtu.be/H5TqrF1FQWk 5) Power Supply Repair Attempt: https://youtu.be/3MqysMpiQYU TIME STAMPS: 0:00 Introduction 1:06 It works?! 2:03 Mission Objectives 2:33 Sponsor Message 3:03 Voltages under Load 6:56 A Look at the Components 10:08 Main Suspects 11:14 Replacing Resistors & PWM Chip 17:01 Is it Fixed? 18:01 Bad Transistor? 20:35 Bad Diode? 21:54 Other possible Faults 23:20 Ripple & Noise 25:08 Output Capacitor and Rectifier 29:17 Out of Ideas 30:30 Thank you & Good night ----------------------------------------­------ MUSIC by FOCUS 10 https://focus10music.bandcamp.com EQUIPMENT AND TOOLS I USE: https://kit.co/janbeta * MERCHANDISE: https://janbeta.creator-spring.com MASTODON: https://chaos.social/@janbeta PATREON: https://patreon.com/janbeta KO-FI: https://ko-fi.com/janbeta WEBSITE: https://www.janbeta.net TWITCH: https://www.twitch.tv/thejanbeta YT CHANNEL MEMBERSHIP: https://www.youtube.com/channel/UCftUpOO4h9EgH0eDOZtjzcA/join Thanks for watching! This video was sponsored by PCBWay. * Stuff marked with "*" contains affiliate links. You don't pay anything extra and I get a little commission from everything you buy through the links (even if you buy something different there). #JanBeta #Amiga #Commodore #A500 #Amiga500 #PowerSupply #Repair #Troubleshooting #RetroComputing #VintageComputing #PCBWay

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