Fixing this motherboard was EASY - but also CHALLENGING!

Video Description

Thank you Reolink for sponsoring this video: https://Reolink.com/?aff=633 #vintage #repair #electronics #486 Second channel! https://www.youtube.com/@Tony359_2 🔸 Join me on Patreon! https://www.patreon.com/Tony3599 🔸 𝐁𝐮𝐲 𝐦𝐞 𝐚 𝐜𝐨𝐟𝐟𝐞𝐞: https://www.buymeacoffee.com/tony359 🔸 𝐓𝐰𝐢𝐭𝐭𝐞𝐫/𝐗: https://twitter.com/tony359 REOLINK links (affiliated, by purchasing here you're helping me, THANKS!) 🔸 https://reolink.com/lp/black-friday-cyber-monday-sale/ ?aff=633 🔸 https://www.amazon.co.uk/stores/page/BF3F9980-B061-4C66-A4F3-BE4805529765?maas=maas_adg_8A11E98E5588EE803C005592DB84EC61_afap_abs&ref_=aa_maas&tag=maas&channel=2024BFCM-Tony359 VOGONS thread: https://www.vogons.org/viewtopic.php?t=103457 TRW link to this MB: https://theretroweb.com/motherboards/s/ask-m1487-89-rev-b1 @bitsundbolts 486 FOREX MB video: https://www.youtube.com/watch?v=34nYvbJeBGo Deksor's 80h test BIOS: https://1drv.ms/u/s!AukePwK7XyEPhO88mwU5XxiB_X98Uw?e=niiRvZ This is a 256KB BIOS but it should be 64KB repeated 4 times so it can be trimmed. 00:00 Intro 02:13 Troubleshooting 04:21 BIOS troubleshooting 07:26 Physical inspection 09:18 Reflowing! 13:50 Testing 14:57 Speed troubleshooting 17:25 SiS 486G speed comparison 19:05 L1 mystery 23:16 It works...?? 25:54 The right setting! 27:12 Final test! 28:18 8KB or 16KB of L1? 30:31 DOOM! 30:59 Outro