BBC Model-B


Page 1

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A Very Grubby BBC Model-B for stripdown and clean. Issue 4 with 0.9 DFS and Econet

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First remove the two screws from the base.

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Followed by the two screws at the rear.

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Remove the function key strip by lifting the centre and unclipping at one end then the other.

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Lift the lid clear to reveal a dusty interior, or if your lucky, some interesting upgrades.

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Undo the two screws which hold the keyboard in place then remove the keyboard ribbon and speaker cable and lift clear.

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Next pull off all the power leads on the Mainboard being careful not to break any connectors. Also making a note as to where they go.

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Underneath the computer, remove the 3 screws that hold the Power Supply unit in place.

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It will now be possible to remove the power supply by first lifting at the rear then pulling backwards to allow the underside socket to come out.

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Next you will have to desolder the 2 wires connected to the Composite Video socket on the rear, Note where they go.

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Remove the 4 screws which hold the mainboard in place, be sure to retain the nylon insulating washers.

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