Acorn A3010 Motherboard Repair
Plan C Plan C
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 Published On Apr 13, 2024

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:
https://archive.org/details/a30x0trmc...
if not here then here:
https://drive.google.com/file/d/1UYZv...
https://drive.google.com/file/d/1K0gP...
https://drive.google.com/file/d/1kRcQ...

Service Manual:
https://drive.google.com/file/d/1uvlZ...

Continuity Worksheet Between ARM250 & ROMs:
https://drive.google.com/file/d/1UFj3...

How to Jerry Rig Del Key with a Button to Clear CMOS
(Save Keyboard Membrane Wear While Testing)
https://drive.google.com/file/d/1wmJF...

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

Acorn POST Error Codes explanation/calculator:
(Usually flashes of the floppy drive light)
https://www.retro-kit.co.uk/page.cfm/...

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