Uploaded October 2024 | Updated September 2026, 2 weeks ago
A 286 board with a 20 MHz Harris CPU from the scrapyard! The board I try to restore is compact and has SIMM sockets! It would be a shame if this board would go to waste - unfortunately, there seem to be a few obstacles in the way. I hope you can help me figure out what is wrong with this board!
Thank you @tony359 for trying to help!
▬▬▬▬ *PCBWay* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
Sponsored by PCBWay: 🔸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:
🔸pcbway.com/project/member/?bmbno=0140E301-54A5-47
▬▬▬▬ *Affiliate Links* ▬▬▬▬▬▬▬▬▬▬▬▬▬
Visit my website to find affiliate links to most of the tools and products I use
🔸bitsundbolts.com/affiliate
Thank you for your support!
▬▬▬▬ *Support Bits und Bolts* ▬▬▬▬▬▬▬▬▬▬
Patreon: 🔸patreon.com/BitsUndBolts
Bitcoin: bc1q2dvf9flf78lam33qjj9w9xgvfxdgre7g9x3rmw
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Website: 🔸bitsundbolts.com
▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬
00:00 Octek FOX II 256
00:38 Cleanup
02:35 Remove battery
04:07 Apply vinegar
07:14 PCBWay
07:44 Inspect damage
11:45 Remove keyboard connector
15:15 Clean board from corrosion
18:52 Fix traces
24:28 Fix charging circuit
28:38 New keyboard connector
31:38 Configure board + manual
38:00 First test
38:45 Replace tantalum remains
41:30 Second test
42:00 I need your help
46:34 Thank you
A 286 board with a 20 MHz Harris CPU from the scrapyard! The board I try to restore is compact and has SIMM sockets! It would be a shame if this board would go to waste - unfortunately, there seem to be a few obstacles in the way. I hope you can help me figure out what is wrong with this board!
Thank you @tony359 for trying to help!
▬▬▬▬ *PCBWay* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
Sponsored by PCBWay: 🔸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:
🔸pcbway.com/project/member/?bmbno=0140E301-54A5-47
▬▬▬▬ *Affiliate Links* ▬▬▬▬▬▬▬▬▬▬▬▬▬
Visit my website to find affiliate links to most of the tools and products I use
🔸bitsundbolts.com/affiliate
Thank you for your support!
▬▬▬▬ *Support Bits und Bolts* ▬▬▬▬▬▬▬▬▬▬
Patreon: 🔸patreon.com/BitsUndBolts
Bitcoin: bc1q2dvf9flf78lam33qjj9w9xgvfxdgre7g9x3rmw
Twitter/X: 🔸twitter.com/BitsUndBolts
Facebook: 🔸facebook.com/bitsundbolts
Website: 🔸bitsundbolts.com
▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬
00:00 Octek FOX II 256
00:38 Cleanup
02:35 Remove battery
04:07 Apply vinegar
07:14 PCBWay
07:44 Inspect damage
11:45 Remove keyboard connector
15:15 Clean board from corrosion
18:52 Fix traces
24:28 Fix charging circuit
28:38 New keyboard connector
31:38 Configure board + manual
38:00 First test
38:45 Replace tantalum remains
41:30 Second test
42:00 I need your help
46:34 Thank you










