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Acorn Archimedes A4000 Troubleshooting Guide: Revision history

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27 September 2026

  • curprev 10:5010:50, 27 September 2026 Josh talk contribs 10,452 bytes −7 Remove emoji from section headings; de-duplicate ref definitions that produced visible cite errors; merge the duplicated References section; targeted corrections noted in the drive report undo

19 July 2026

  • curprev 10:0110:01, 19 July 2026 Josh talk contribs 10,459 bytes +1,887 Add section: booting to the Supervisor * prompt = corrupt CMOS/flat battery; use *Desktop to enter RISC OS; permanent fix is battery + CMOS reset; plus PSU-servicing update undo
  • curprev 09:5609:56, 19 July 2026 Josh talk contribs 8,572 bytes +589 PSU: permit safe servicing/recap of the mains PSU for restoration; strengthen lethal-shock warnings and discharge procedure (replaces exchange-only/do-not-open wording) undo

17 June 2026

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