BBC Master 128: The evolved 8-bit computer from Acorn

In the basement today we have quite a rare machine (for North America:) The BBC Master 128. It's an evolution of the original Acorn BBC Micro from 1981. My first task is to service the PSU and convert it to 120v, then see if this machine is working. Part 1: This part! Part 2:    • Refurbishing the BBC Master 128   Part 3:    • BBC Master mods and improvememts   0:00 Intro 21:10 PSU service, conversion to 120V 41:38 First power up of the computer --- Video Links My old video showing off the two BBC Micro machines I brought back from the UK:    • I visited the UK and brought back some com...   BBC Micro PSU repair and 120v conversion:    • A BBC Micro power supply repair and a ton ...   BBC Master: https://en.wikipedia.org/wiki/BBC_Master 65C12 datasheet: http://archive.6502.org/datasheets/cm... Performing a CMOS reset on the BBC Master: https://lionels.orpheusweb.co.uk/Comp... Adrian's Digital Basement Merch store: https://my-store-c82bd2-2.creator-spr... Adrian's Digital Basement ][ (Second Channel)    / @adriansdigitalbasement2   Support the channel on Patreon:   / adriansdigitalbasement   -- Tools Deoxit D5: https://amzn.to/2VvOKy1 http://store.caig.com/s.nl/it.A/id.16... O-Ring Pick Set: (I use these to lift chips off boards) https://amzn.to/3a9x54J Elenco Electronics LP-560 Logic Probe: https://amzn.to/2VrT5lW Hakko FR301 Desoldering Iron: https://amzn.to/2ye6xC0 Rigol DS1054Z Four Channel Oscilloscope: https://www.rigolna.com/products/digi... Head Worn Magnifying Goggles / Dual Lens Flip-In Head Magnifier: https://amzn.to/3adRbuy TL866II Plus Chip Tester and EPROM programmer: (The MiniPro) https://amzn.to/2wG4tlP https://www.aliexpress.com/item/33000... TS100 Soldering Iron: https://amzn.to/2K36dJ5 https://www.ebay.com/itm/TS100-65W-MI... EEVBlog 121GW Multimeter: https://www.eevblog.com/product/121gw/ DSLogic Basic Logic Analyzer: https://amzn.to/2RDSDQw https://www.ebay.com/itm/USB-Logic-DS... Magnetic Screw Holder: https://amzn.to/3b8LOhG https://www.harborfreight.com/4-inch-... Universal ZIP sockets: (clones, used on my ZIF-64 test machine) https://www.ebay.com/itm/14-16-18-20-... RetroTink 2X Upconverter: (to hook up something like a C64 to HDMI) http://www.retrotink.com/ Plato (Clone) Side Cutters: (order five) https://www.ebay.com/itm/1-2-5-10PCS-... Heat Sinks: https://www.aliexpress.com/item/32537... Little squeezy bottles: (available elsewhere too) https://amzn.to/3b8LOOI --- Links My GitHub repository: https://github.com/misterblack1?tab=r... Commodore Computer Club / Vancouver, WA – Portland, OR – PDX Commodore Users Group https://www.commodorecomputerclub.com/ --- Instructional videos My video on damage-free chip removal:    • How to remove chips without damaging the c...   --- Music Intro music and other tracks by: Nathan Divino @itsnathandivino