Heavy Corrosion: 386SX-25 Needs Your Help!

Video Description

This video is brought to you by PCBWay #sponsored During my last visit to the scrapyard, I picked up this poor 386SX-25. The board is heavily corroded and needs a full restoration. The culprit is the barrel battery located near the keyboard controller. Let's see if we can fix it! ▬▬▬▬ *PCBWay* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Sponsored by PCBWay: 🔸https://pcbway.com/g/lF253I PCBWay provides full feature custom PCB prototyping services, 3D printing, and much more. Check them out using my referral link above and get a 5 USD welcome bonus when you sign up as a new customer! My contributions to the Community Project Space at PCBWay: 🔸https://www.pcbway.com/project/member/?bmbno=0140E301-54A5-47 ▬▬▬▬ *MIDI FORGE* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Video - Symphony: https://youtu.be/xtc5JEB-j64 Video - Sonata: https://youtu.be/jrLNLHzQgAc MIDI FORGE Minuet at PCBWay.com: 🔸https://www.pcbway.com/project/shareproject/MIDI_FORGE_Minuet_8MB_AWE64_memory_expansion_62a9ae2e.html MIDI FORGE Sonata at PCBWay.com: 🔸https://www.pcbway.com/project/shareproject/MIDI_FORGE_Sonata_28MB_AWE64_memory_expansion_fa888c75.html MIDI FORGE Rhapsody at PCBWay.com: 🔸https://www.pcbway.com/project/shareproject/MIDI_FORGE_Rhapsody_28MB_AWE64_memory_expansion_6a9b1b76.html More details on my website! Minuet: 🔸 https://bitsundbolts.com/2025/07/01/the-smallest-first-diy-8mb-awe64-memory-expansion-board/ Sonata: 🔸 https://bitsundbolts.com/2025/07/09/punching-above-its-weight-class/ Rhapsody: 🔸 https://bitsundbolts.com/2025/07/06/another-awe64-28mb-expansion-midi-forge-rhapsody/ ▬▬▬▬ *Affiliate Links* ▬▬▬▬▬▬▬▬▬▬▬▬▬ Visit my website to find affiliate links to most of the tools and products I use 🔸https://bitsundbolts.com/affiliate/ Thank you for your support! ▬▬▬▬ *Support Bits und Bolts* ▬▬▬▬▬▬▬▬▬▬ Patreon: 🔸https://www.patreon.com/BitsUndBolts Bitcoin: bc1q2dvf9flf78lam33qjj9w9xgvfxdgre7g9x3rmw Twitter/X: 🔸https://twitter.com/BitsUndBolts Facebook: 🔸https://www.facebook.com/bitsundbolts Website: 🔸https://bitsundbolts.com/ ▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 Overview 02:42 Removing ICs 03:45 PCBWay 04:33 Under the microscope 06:44 Restoration 10:33 Three days later 11:56 First try 12:38 Replace BIOS chips 13:45 Keyboard issues 16:38 Second try and Benchmarks 20:39 Memory tests 22:41 Random resets 23:00 Your input