Plan C | Acorn A3000 Battery Damage - Complete Board Strip & Trace Repair @Plan-C | Uploaded April 2019 | Updated October 2024, 3 hours ago.
I bought an Acorn A3000 that was being sold 'for parts only' due to some pretty serious battery damage. I had to try and save it!

Video shows complete teardown to board, removal of all components in affected area, neutralizing of corrosion, stripping back the solder mask from damaged traces and how I repaired traces and vias with a mixture of solder and magnet wire. I then reassemble and do a preliminary test boot.

Also shows a way to jerryrig a 'Del' key to save the keyboard ribbon when testing the machine and testing of 74 logic chips on an eprom programmer.

I probably went a bit over-the top but better to be sure. Many traces were rusty or had high resistance.

Waiting on some new keyboard connectors for part 2::
mouser.co.uk/ProductDetail/TE-Connectivity-AMP/7-520355-0?qs=%2Fha2pyFadujRi2Z6jxSELYK2qCaK%2Fu0lLKNZOnNcMpVpmJiy6B3FpA%3D%3D

Part 2: youtu.be/Ae_-DW-ItEc

POST Error Calculator:
retro-kit.co.uk/page.cfm/content/Common-RISC-OS-POST-failure-errors

Good luck All