# Acorn Archimedes A305 Restoration Update - Keyboard Rebuild, Monitor Fixes & Video & Audio Mods

> The Acorn Archimedes A305 was the original and first ARM CPU powered computer. I'm doing some work on mine in preparation for a video on the history of the ARM architecture and the Archimedes in general, so join me for a progress update!

- Canonical URL: https://ctrl-alt-rees.com/2020-08-18-archimedes-restoration-update-video-audio-mods-keyboard-rebuild.html
- Published: 2020-08-18
- Last updated: 2020-08-18
- Author: Rees (ctrl-alt-rees)
- Video: https://www.youtube.com/watch?v=xk0z6wG_xzs (9:29)
- Licence: CC BY-SA 2.0 UK (https://creativecommons.org/licenses/by-sa/2.0/uk/), unless stated otherwise below

Watch on YouTube: https://www.youtube.com/watch?v=xk0z6wG_xzs

The Acorn Archimedes A305 was the original and first ARM CPU powered computer. I'm doing some work on mine in preparation for a video on the history of the ARM architecture and the Archimedes in general, so join me for a progress update!

Covered in this video: Reversing the video mod I did a few years ago to restore sync-on-green, the Burr-Brown op amp audio upgrade, monitor power switch fix and keyboard rebuild.

Relevant links:
KeyTronic keyboard pads: [https://texelec.com/product/foam-capacitive-pads-keytronic](https://texelec.com/product/foam-capacitive-pads-keytronic)

Amiga keyboard springs: [https://retrohax.net/shop/amiga/keyboard-springs-set-for-amiga](https://retrohax.net/shop/amiga/keyboard-springs-set-for-amiga)

Archimedes mouse mat: [https://www.rhayadercomputers.co.uk/Archimedes_mouse_mat/p4866955_19273809.aspx](https://www.rhayadercomputers.co.uk/Archimedes_mouse_mat/p4866955_19273809.aspx)

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