Plan C | Acorn A3010 Motherboard Repair @Plan-C | Uploaded April 2024 | Updated October 2024, 8 hours ago.
Repair of Acorn A3010 motherboard that appeared dead and had suffered corrosion damage due to a leaking onboard battery.

Video shows summary of clean up of damage caused by battery acid, basic initial tests, cursory overview of trace repairs to battery damaged areas. I scope for clocks and reset, check the address bus and trace out broken connections. Finally, a brief power up and test. Also demonstrate a useful diagnostic tool for vintage Acorn computers.

Hopefully, there will be a part 2 detailing the rest of the restoration if I manage to obtain a case and etc.

Thanks to SparksUK and Gadget UK.

Good luck All!

Schematics:
archive.org/details/a30x0trmcover/A30x0%2BA4000trm
if not here then here:
drive.google.com/file/d/1UYZv2mETkY9Xoz-fz9RuZ3pgmmb08x6P/view?usp=sharing
drive.google.com/file/d/1K0gPXLdzkM4tBN_k44YPsZ9sA4594fv0/view?usp=sharing
drive.google.com/file/d/1kRcQLbRu2OqIn1BMPVnRA3Z9SI5HuO-N/view?usp=sharing

Service Manual:
drive.google.com/file/d/1uvlZt-zdkU2mWPW06kai2xTjRgcHhPtJ/view?usp=drive_link

Continuity Worksheet Between ARM250 & ROMs:
drive.google.com/file/d/1UFj3rjQ7Gopoecn1tmbq7alQDJedWK__/view?usp=sharing

How to Jerry Rig Del Key with a Button to Clear CMOS
(Save Keyboard Membrane Wear While Testing)
drive.google.com/file/d/1wmJFrfNet46kEmjA_LQ4GTwqKAXPVdN7/view?usp=sharing

Acorn P.O.S.T. Box Diagnostic Tool:
myelin.nz/acorn/postbox

Acorn POST Error Codes explanation/calculator:
(Usually flashes of the floppy drive light)
retro-kit.co.uk/page.cfm/content/Common-faults-on-the-Acorn-Archimedes