This is a replica Printed Circuit Board (PCB) derived from the 8-bit Acorn BBC Model B computer.

The board was created to allow BBC Model B computers that have damaged or faulty PCBs to be successfully repaired. This can be achieved by moving all components from an original board to the replica board, or even replace some parts with more modern alternatives.

We currently have 1 x replica board model available:

• Issue 7

Issue 7

This board design was one of the last used by Acorn.

Other Information

Over the past 30+ years, there have been many boards that have become damaged for various reasons such as poor storage conditions etc.

The replica boards are of the same dimensions of the original and can therefore be used as a direct replacement to the original PCBs.

Some improvements/modifications were made:

• Improved silkscreen, adding more descriptive connector labels, IC names and better placed component labels
• Manufactured using modern PCB manufacturing techniques and materials.
• Composite video connector footprint moved to be aligned with the case so a standard composite connector can be used instead of the BNC type if desired.
• Some passive components moved slightly to give a better clearance to neighboring components.
• Extra GND holes on DIN connectors to allow for a larger variety of replacements to be used.
• Footprint added for standard pushbutton reset switch (Original footprint is retained, but it was not populated by Acorn as far as I know)

Prototype boards were tested as far as possible at each stage of the circuitry to ensure no issues were encountered. Currently available PCB has no known issues.

A "Bill of Materials" (BOM) spreadsheet has been created to help with locating replacement parts: Click here to access.

Optional Extras

Some replacement components can be purchased along with the boards:

• Resistor Pack, containing all 151 required resistors for the specific model of board.

Other available component packs and addons will be added as they become available.

YouTubers/Influencers - Please let me know if you produce a video building the PCB and I'll link the video and refund the cost of the board. I will not send out free boards in advance, sorry.