Refurbishing the BBC Master 128 @adriansdigitalbasement
Refurbishing the BBC Master 128  @adriansdigitalbasement
Uploaded June 2023 | Updated September 2026, 2 weeks ago
In this video, I work on refurbishing the old BBC Master 128. This involved thoroughly cleaning the computer, getting the keyboard fully working (no easy feat) and getting the system booting the BBC Master welcome disk. It was a journey but the payoff feels great.

Part 1: youtu.be/MS_KFcSZaLs
Part 2: This part!
Part 3: youtu.be/2Sgleturods

0:00 Intro
0:55 Cleaning and refurbishing the computer
11:35 Fixing the keyboard (Futaba linear switches)
40:32 Creating a new battery pack for the BBC
43:31 Setting up the CMOS settings
45:00 Exploring the BBC Master a little
48:13 Booting software from floppy disk

--- Video Links

Stardot Forums, the best place for BBC Micro/Master information:
stardot.org.uk/forums

BBC Master 128 Schematics:
stardot.org.uk/forums/viewtopic.php?t=22660

My old video showing off the two BBC Micro machines I brought back from the UK:
youtube.com/watch?v=KnkHdvjtBmA

BBC Micro Model B PSU repair and 120v conversion:
youtube.com/watch?v=b6bfYwexlAs&t=1173s

BBC Master:
en.wikipedia.org/wiki/BBC_Master

65C12 datasheet:
archive.6502.org/datasheets/cmd_g65scxxx_mpu_family.pdf

Performing a CMOS reset on the BBC Master:
lionels.orpheusweb.co.uk/CompNyb/TechStuff/8-Bit/Master128/128BatConfig.html

Adrian's Digital Basement Merch store:
my-store-c82bd2-2.creator-spring.com

Adrian's Digital Basement ][ (Second Channel)
youtube.com/channel/UCbtwi4wK1YXd9AyV_4UcE6g

Support the channel on Patreon:
patreon.com/adriansdigitalbasement

-- Tools

Deoxit D5:
amzn.to/2VvOKy1
store.caig.com/s.nl/it.A/id.1602/.f

O-Ring Pick Set: (I use these to lift chips off boards)
amzn.to/3a9x54J

Elenco Electronics LP-560 Logic Probe:
amzn.to/2VrT5lW

Hakko FR301 Desoldering Iron:
amzn.to/2ye6xC0

Rigol DS1054Z Four Channel Oscilloscope:
rigolna.com/products/digital-oscilloscopes/1000z

Head Worn Magnifying Goggles / Dual Lens Flip-In Head Magnifier:
amzn.to/3adRbuy

TL866II Plus Chip Tester and EPROM programmer: (The MiniPro)
amzn.to/2wG4tlP
aliexpress.com/item/33000308958.html

TS100 Soldering Iron:
amzn.to/2K36dJ5
ebay.com/itm/TS100-65W-MINI-Digital-OLED-Programmable-Soldering-Iron-Anti-static-Structure/113382669853

EEVBlog 121GW Multimeter:
eevblog.com/product/121gw

DSLogic Basic Logic Analyzer:
amzn.to/2RDSDQw
ebay.com/itm/USB-Logic-DSLogic-Basic-Analyzer-16Ch-100MHz-4Ch-400MHz-Xilinx-Spartan-6-FPGA/202543965672

Magnetic Screw Holder:
amzn.to/3b8LOhG
harborfreight.com/4-inch-magnetic-parts-tray-90566.html

Universal ZIP sockets: (clones, used on my ZIF-64 test machine)
ebay.com/itm/14-16-18-20-24-28-32-40-pin-IC-Test-Universal-ZIF-Socket-Fs/303206721971

RetroTink 2X Upconverter: (to hook up something like a C64 to HDMI)
retrotink.com

Plato (Clone) Side Cutters: (order five)
ebay.com/itm/1-2-5-10PCS-Micro-Scissor-125mm-PLATO-170-Electronics-Cutter-Side-Cutting-Pliers/163458746184

Heat Sinks:
aliexpress.com/item/32537183709.html

Little squeezy bottles: (available elsewhere too)
amzn.to/3b8LOOI

--- Links

My GitHub repository:
github.com/misterblack1?tab=repositories

Commodore Computer Club / Vancouver, WA – Portland, OR – PDX Commodore Users Group
commodorecomputerclub.com

--- Instructional videos

My video on damage-free chip removal:
youtube.com/watch?v=XQVjwPsVFd8

--- Music

Intro music and other tracks by:
Nathan Divino
@itsnathandivino
Refurbishing the BBC Master 128MFM drives are really unreliableThe Plexus P/20: A Fantastic Journey (Supercut)First power up of the Plexus P/20 dual processor UNIX systemThree unknown Macs: Lets get them working again #repairMac Repairathon Part 1: Taking stock of the issuesI wasnt expecting this fault with this CoCo 1 motherboardFixing a dead and dirty Atari 800XLAnother broken Mac Plus with some odd symptomsIm learning how to run software on the Acorn Archimedes (Plus 120V conversion)PC archeology: The HP Vectra N Series, a well made pizza box PC from the early 90sLets fix a dead VARTA ravaged 486 motherboard
Adrians Digital Basement |

Refurbishing the BBC Master 128

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