Uploaded April 2023 | Updated September 2026, 2 weeks ago
#appleIIclone #franklinace #keytronic
This Franklin 1200 powers up again, but now the keyboard is completely dead and both disk drives are acting up. Let's fix them!
Part 1: youtu.be/UoY2OVK71Ew
Part 2: This part!
Part 3: Coming soon
0:00 Intro
0:42 Keyboard repair (foam and foil, Kentronic)
6:04 Repairing two disk drives
42:32 Running some diagnostics on the Franklin Ace 1200
53:38 Outro
--- Video Links
TexElec foam and foil pads for Keytronics keyboards:
texelec.com/product/foam-capacitive-pads-keytronic
Shugart SA-400 (and SA-390) disk drive:
deramp.com/downloads/floppy_drives/shugart/SA400%20Service%20Manual.pdf
Drol (Game, wikipedia)
en.wikipedia.org/wiki/Drol
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
#appleIIclone #franklinace #keytronic
This Franklin 1200 powers up again, but now the keyboard is completely dead and both disk drives are acting up. Let's fix them!
Part 1: youtu.be/UoY2OVK71Ew
Part 2: This part!
Part 3: Coming soon
0:00 Intro
0:42 Keyboard repair (foam and foil, Kentronic)
6:04 Repairing two disk drives
42:32 Running some diagnostics on the Franklin Ace 1200
53:38 Outro
--- Video Links
TexElec foam and foil pads for Keytronics keyboards:
texelec.com/product/foam-capacitive-pads-keytronic
Shugart SA-400 (and SA-390) disk drive:
deramp.com/downloads/floppy_drives/shugart/SA400%20Service%20Manual.pdf
Drol (Game, wikipedia)
en.wikipedia.org/wiki/Drol
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
![Tandy CM-1: A high-end 400 line monitor from 1984
#repair On a recent VWestlife video, the Tandy CM-1 monitor was mentioned. This monitor was paired with the high-end Tandy 2000 computer which was released in 1984. What made this monitor special is that it runs at 26khz which provides a 640x400 native non-interlaced video signal.
I picked up this monitor mentioned in VWestlifes video and its going to need some repair, so lets figure out whats wrong with this and get it working.
Links
STB Super Res 400 repair:
https://youtu.be/iKeVPj_YsG8
Vwestlifes channel and video:
https://www.youtube.com/channel/UC1ydE9gDHTdvbNVIgEKIKzw
https://www.youtube.com/watch?v=X_mFNBRXObg&t=1s
Service manual:
https://github.com/Tandy2K/Tandy2000/tree/master/Hardware/Tandy%20CM-1%20Service%20Training
https://colorcomputerarchive.com/repo/Documents/Catalogs/Radio%20Shack/RSC-11%20Computer%20Catalog%20(1984)(Radio%20Shack).pdf
https://colorcomputerarchive.com/repo/Documents/Catalogs/Radio%20Shack/RSC-15%20Computer%20Catalog%20(1986)(Radio%20Shack).pdf
https://colorcomputerarchive.com/repo/Documents/Catalogs/Radio%20Shack/RSC-17%20Computer%20Catalog%20(1987)(Radio%20Shack).pdf
Adrians Digital Basement Merch store:
https://my-store-c82bd2-2.creator-spring.com/
Adrians Digital Basement ][ (Second Channel)
https://www.youtube.com/channel/UCbtwi4wK1YXd9AyV_4UcE6g
Support the channel on Patreon:
https://www.patreon.com/adriansdigitalbasement
My GitHub repository:
https://github.com/misterblack1?tab=repositories
Tools
Deoxit D5:
https://amzn.to/2VvOKy1
http://store.caig.com/s.nl/it.A/id.1602/.f
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/digital-oscilloscopes/1000z/
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/33000308958.html
TS100 Soldering Iron:
https://amzn.to/2K36dJ5
https://www.ebay.com/itm/TS100-65W-MINI-Digital-OLED-Programmable-Soldering-Iron-Anti-static-Structure/113382669853
EEVBlog 121GW Multimeter:
https://www.eevblog.com/product/121gw/
DSLogic Basic Logic Analyzer:
https://amzn.to/2RDSDQw
https://www.ebay.com/itm/USB-Logic-DSLogic-Basic-Analyzer-16Ch-100MHz-4Ch-400MHz-Xilinx-Spartan-6-FPGA/202543965672
Magnetic Screw Holder:
https://amzn.to/3b8LOhG
https://www.harborfreight.com/4-inch-magnetic-parts-tray-90566.html
Universal ZIP sockets: (clones, used on my ZIF-64 test machine)
https://www.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)
http://www.retrotink.com/
Plato (Clone) Side Cutters: (Order Five)
https://www.ebay.com/itm/1-2-5-10PCS-Micro-Scissor-125mm-PLATO-170-Electronics-Cutter-Side-Cutting-Pliers/163458746184
Heat Sinks:
https://www.aliexpress.com/item/32537183709.html
Little squeezy bottles: (available elsewhere too)
https://amzn.to/3b8LOOI
Instructional videos
My video on chip removal without damage:
https://www.youtube.com/watch?v=XQVjwPsVFd8
Music
Intro music and other tracks by:
Nathan Divino
@itsnathandivino Tandy CM-1: A high-end 400 line monitor from 1984](https://i.ytimg.com/vi/Ulkpu9gu5DI/mqdefault.jpg)
![The Franklin Ace 1200 was a semi-legal Apple II clone #repair
#appleIIclone #franklinace
On the bench today we have a Franklin Ace 1200 which is an Apple ][+ clone and it doesnt turn on. Lets see whats wrong with it and get it working again.
Part 1: This part!
Part 2: https://youtu.be/Tvig9Svrw4g
Part 3: Coming soon
Video Links
Franklin Ace 1000 videos:
Part 1: https://youtu.be/v3-93YjJDPk
Part 2: https://www.youtube.com/watch?v=7afup03v7xw
ATX PSU replacement from SMMC #0054:
https://www.youtube.com/watch?v=ANbiQW-Ppt4
Project is called ATX4VC
https://github.com/dekuNukem/ATX4VC/blob/master/README.md
PCPI Applicard information:
https://www.atarimagazines.com/creative/v10n1/100_The_PCPI_AppliCard.php
Fractal Basic Benchmarks:
https://docs.google.com/spreadsheets/d/1Sdh9vmm8RKGiE1-sTh9ThjFogLAoTg3M-5rL7LBWBUI/edit?usp=sharing
VCF East:
https://vcfed.org/events/vintage-computer-festival-east/
Adrians Digital Basement Merch store:
https://my-store-c82bd2-2.creator-spring.com/
Adrians Digital Basement ][ (Second Channel)
https://www.youtube.com/channel/UCbtwi4wK1YXd9AyV_4UcE6g
Support the channel on Patreon:
https://www.patreon.com/adriansdigitalbasement
Tools
Deoxit D5:
https://amzn.to/2VvOKy1
http://store.caig.com/s.nl/it.A/id.1602/.f
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/digital-oscilloscopes/1000z/
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/33000308958.html
TS100 Soldering Iron:
https://amzn.to/2K36dJ5
https://www.ebay.com/itm/TS100-65W-MINI-Digital-OLED-Programmable-Soldering-Iron-Anti-static-Structure/113382669853
EEVBlog 121GW Multimeter:
https://www.eevblog.com/product/121gw/
DSLogic Basic Logic Analyzer:
https://amzn.to/2RDSDQw
https://www.ebay.com/itm/USB-Logic-DSLogic-Basic-Analyzer-16Ch-100MHz-4Ch-400MHz-Xilinx-Spartan-6-FPGA/202543965672
Magnetic Screw Holder:
https://amzn.to/3b8LOhG
https://www.harborfreight.com/4-inch-magnetic-parts-tray-90566.html
Universal ZIP sockets: (clones, used on my ZIF-64 test machine)
https://www.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)
http://www.retrotink.com/
Plato (Clone) Side Cutters: (order five)
https://www.ebay.com/itm/1-2-5-10PCS-Micro-Scissor-125mm-PLATO-170-Electronics-Cutter-Side-Cutting-Pliers/163458746184
Heat Sinks:
https://www.aliexpress.com/item/32537183709.html
Little squeezy bottles: (available elsewhere too)
https://amzn.to/3b8LOOI
Links
My GitHub repository:
https://github.com/misterblack1?tab=repositories
Commodore Computer Club / Vancouver, WA – Portland, OR – PDX Commodore Users Group
https://www.commodorecomputerclub.com/
Instructional videos
My video on damage-free chip removal:
https://www.youtube.com/watch?v=XQVjwPsVFd8
Music
Intro music and other tracks by:
Nathan Divino
@itsnathandivino The Franklin Ace 1200 was a semi-legal Apple II clone #repair](https://i.ytimg.com/vi/UoY2OVK71Ew/mqdefault.jpg)
![4/12 C64 repair using a great $57 portable oscilloscope (ZEEWEII DSO1511G review)
#c64 #commodore #repair
On todays video, we have another C64 repair. This time Im going to be using a very inexpensive portable oscilloscope which I bought from AliExpress for a total of $57 shipped. Will this cheap scope be good enough to help me fix this computer?
0:00 Intro
1:21 The ZEEWEII DSO1511G
17:26 C64 Repair
40:09 Summary / Outro
43:28 Bonus footage
Episode 1: https://youtu.be/u8kaWLjghiU
Episode 2: https://youtu.be/rBMoVvYnDIA
Episode 3: https://youtu.be/kDg_79bhyxA
Episode 4: This episode!
Video Links
ZEEWEII DSO1511G Oscilloscope
Purchase links (As of Oct 2022)
https://www.aliexpress.us/item/3256801783387968.html (currently $62 USD)
Epictronics repairing one of my C64s:
https://www.youtube.com/watch?v=HrEyytUZ1O8
Epictronics YouTube:
https://www.youtube.com/c/epictronics1
Adrians Digital Basement Merch store:
https://my-store-c82bd2-2.creator-spring.com/
Adrians Digital Basement ][ (Second Channel)
https://www.youtube.com/channel/UCbtwi4wK1YXd9AyV_4UcE6g
Support the channel on Patreon:
https://www.patreon.com/adriansdigitalbasement
Tools
Deoxit D5:
https://amzn.to/2VvOKy1
http://store.caig.com/s.nl/it.A/id.1602/.f
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/digital-oscilloscopes/1000z/
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/33000308958.html
TS100 Soldering Iron:
https://amzn.to/2K36dJ5
https://www.ebay.com/itm/TS100-65W-MINI-Digital-OLED-Programmable-Soldering-Iron-Anti-static-Structure/113382669853
EEVBlog 121GW Multimeter:
https://www.eevblog.com/product/121gw/
DSLogic Basic Logic Analyzer:
https://amzn.to/2RDSDQw
https://www.ebay.com/itm/USB-Logic-DSLogic-Basic-Analyzer-16Ch-100MHz-4Ch-400MHz-Xilinx-Spartan-6-FPGA/202543965672
Magnetic Screw Holder:
https://amzn.to/3b8LOhG
https://www.harborfreight.com/4-inch-magnetic-parts-tray-90566.html
Universal ZIP sockets: (clones, used on my ZIF-64 test machine)
https://www.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)
http://www.retrotink.com/
Plato (Clone) Side Cutters: (order five)
https://www.ebay.com/itm/1-2-5-10PCS-Micro-Scissor-125mm-PLATO-170-Electronics-Cutter-Side-Cutting-Pliers/163458746184
Heat Sinks:
https://www.aliexpress.com/item/32537183709.html
Little squeezy bottles: (available elsewhere too)
https://amzn.to/3b8LOOI
Links
My GitHub repository:
https://github.com/misterblack1?tab=repositories
Commodore Computer Club / Vancouver, WA – Portland, OR – PDX Commodore Users Group
https://www.commodorecomputerclub.com/
Instructional videos
My video on damage-free chip removal:
https://www.youtube.com/watch?v=XQVjwPsVFd8
Music
Intro music and other tracks by:
Nathan Divino
@itsnathandivino 4/12 C64 repair using a great $57 portable oscilloscope (ZEEWEII DSO1511G review)](https://i.ytimg.com/vi/Uqrel5fQpK4/mqdefault.jpg)
![Soroc IQ 120: Just when you think youre on the right track... Surprise!
The Soroc IQ 120 is showing signs of life but also is definitely appears to have some faults. Lets get this old terminal up and running!
Part 1: https://youtu.be/CSKR1mR2bkw
Part 2: https://youtu.be/2kwQvO2noxE
Part 3: https://youtu.be/JHyABE53R50
Part 4: This part!
Part 4a: https://youtu.be/_uq86UDmbsU (another CRT swap attempt)
Info
Documentation:
http://www.bitsavers.org/pdf/soroc/
Soroc IQ 120:
https://terminals-wiki.org/wiki/index.php/Soroc_IQ-120
Adrians Digital Basement Merch store:
https://my-store-c82bd2-2.creator-spring.com/
Adrians Digital Basement ][ (Second Channel)
https://www.youtube.com/channel/UCbtwi4wK1YXd9AyV_4UcE6g
Support the channel on Patreon:
https://www.patreon.com/adriansdigitalbasement
My GitHub repository:
https://github.com/misterblack1?tab=repositories
Tools
Deoxit D5:
https://amzn.to/2VvOKy1
http://store.caig.com/s.nl/it.A/id.1602/.f
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/digital-oscilloscopes/1000z/
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/33000308958.html
TS100 Soldering Iron:
https://amzn.to/2K36dJ5
https://www.ebay.com/itm/TS100-65W-MINI-Digital-OLED-Programmable-Soldering-Iron-Anti-static-Structure/113382669853
EEVBlog 121GW Multimeter:
https://www.eevblog.com/product/121gw/
DSLogic Basic Logic Analyzer:
https://amzn.to/2RDSDQw
https://www.ebay.com/itm/USB-Logic-DSLogic-Basic-Analyzer-16Ch-100MHz-4Ch-400MHz-Xilinx-Spartan-6-FPGA/202543965672
Magnetic Screw Holder:
https://amzn.to/3b8LOhG
https://www.harborfreight.com/4-inch-magnetic-parts-tray-90566.html
Universal ZIP sockets: (clones, used on my ZIF-64 test machine)
https://www.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)
http://www.retrotink.com/
Plato (Clone) Side Cutters: (Order Five)
https://www.ebay.com/itm/1-2-5-10PCS-Micro-Scissor-125mm-PLATO-170-Electronics-Cutter-Side-Cutting-Pliers/163458746184
Heat Sinks:
https://www.aliexpress.com/item/32537183709.html
Little squeezy bottles: (available elsewhere too)
https://amzn.to/3b8LOOI
Instructional videos
My video on chip removal without damage:
https://www.youtube.com/watch?v=XQVjwPsVFd8
Music
Intro music and other tracks by:
Nathan Divino
@itsnathandivino Soroc IQ 120: Just when you think youre on the right track... Surprise!](https://i.ytimg.com/vi/UzlRuaBDX90/mqdefault.jpg)
![This Amiga 500 was left outside for years. Lets try to revive it!
Its time for another poor neglected retro computer this time we have an Amiga 500 which was left outside for years. Here in Oregon that means rain lots of rain. Can this poor computer ever work again? Lets give it a try!
Part 1: This video
Part 2: https://youtu.be/BOoIlKSTmjk
Part 3: https://youtu.be/3gW4ftRPurU
Links
The Field Found 64: (the video that started it all)
https://www.youtube.com/watch?v=wVphFkaX1gg
Amiga 500 Schematics:
https://www.amigawiki.org/dnl/schematics/A500_R6.pdf
https://archive.org/details/system-schematics-a-500-revisions-5-6a-7
Adrians Digital Basement Merch store:
https://my-store-c82bd2-2.creator-spring.com/
Adrians Digital Basement ][ (Second Channel)
https://www.youtube.com/channel/UCbtwi4wK1YXd9AyV_4UcE6g
Support the channel on Patreon:
https://www.patreon.com/adriansdigitalbasement
Tools
Deoxit D5:
https://amzn.to/2VvOKy1
http://store.caig.com/s.nl/it.A/id.1602/.f
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/digital-oscilloscopes/1000z/
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/33000308958.html
TS100 Soldering Iron:
https://amzn.to/2K36dJ5
https://www.ebay.com/itm/TS100-65W-MINI-Digital-OLED-Programmable-Soldering-Iron-Anti-static-Structure/113382669853
EEVBlog 121GW Multimeter:
https://www.eevblog.com/product/121gw/
DSLogic Basic Logic Analyzer:
https://amzn.to/2RDSDQw
https://www.ebay.com/itm/USB-Logic-DSLogic-Basic-Analyzer-16Ch-100MHz-4Ch-400MHz-Xilinx-Spartan-6-FPGA/202543965672
Magnetic Screw Holder:
https://amzn.to/3b8LOhG
https://www.harborfreight.com/4-inch-magnetic-parts-tray-90566.html
Universal ZIP sockets: (clones, used on my ZIF-64 test machine)
https://www.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)
http://www.retrotink.com/
Plato (Clone) Side Cutters: (order five)
https://www.ebay.com/itm/1-2-5-10PCS-Micro-Scissor-125mm-PLATO-170-Electronics-Cutter-Side-Cutting-Pliers/163458746184
Heat Sinks:
https://www.aliexpress.com/item/32537183709.html
Little squeezy bottles: (available elsewhere too)
https://amzn.to/3b8LOOI
Links
My GitHub repository:
https://github.com/misterblack1?tab=repositories
Commodore Computer Club / Vancouver, WA – Portland, OR – PDX Commodore Users Group
https://www.commodorecomputerclub.com/
Instructional videos
My video on damage-free chip removal:
https://www.youtube.com/watch?v=XQVjwPsVFd8
Music
Intro music and other tracks by:
Nathan Divino
@itsnathandivino This Amiga 500 was left outside for years. Lets try to revive it!](https://i.ytimg.com/vi/V-wNbku3CeI/mqdefault.jpg)
![IBM PC 5150 repair: the motherboard lives!
Part 2 of the IBM PC 5150 motherboard repair, I continue troubleshooting and get it fully working.
Part 1: https://youtu.be/W7LJDmuHOlw
Part 2: This part!
Video Links
My initial testing of this IBM PC 5150 motherboard:
https://youtu.be/noRZC9y9Uz0
Great resource for IBM PC information:
minuszerodegrees.net
IBM PC 5150 Switch settings:
https://www.minuszerodegrees.net/5150/misc/5150_motherboard_switch_settings.htm
IBM PC 5150 Technical Manual: (64-256k)
https://www.minuszerodegrees.net/manuals/IBM_5150_Technical_Reference_6322507_APR84.pdf
RGB2HDMI: (What Im using to capture CGA)
https://github.com/IanSB/RGBtoHDMI
Adrians Digital Basement Merch store:
https://my-store-c82bd2-2.creator-spring.com/
Adrians Digital Basement ][ (Second Channel)
https://www.youtube.com/channel/UCbtwi4wK1YXd9AyV_4UcE6g
Support the channel on Patreon:
https://www.patreon.com/adriansdigitalbasement
Tools
Deoxit D5:
https://amzn.to/2VvOKy1
http://store.caig.com/s.nl/it.A/id.1602/.f
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/digital-oscilloscopes/1000z/
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/33000308958.html
TS100 Soldering Iron:
https://amzn.to/2K36dJ5
https://www.ebay.com/itm/TS100-65W-MINI-Digital-OLED-Programmable-Soldering-Iron-Anti-static-Structure/113382669853
EEVBlog 121GW Multimeter:
https://www.eevblog.com/product/121gw/
DSLogic Basic Logic Analyzer:
https://amzn.to/2RDSDQw
https://www.ebay.com/itm/USB-Logic-DSLogic-Basic-Analyzer-16Ch-100MHz-4Ch-400MHz-Xilinx-Spartan-6-FPGA/202543965672
Magnetic Screw Holder:
https://amzn.to/3b8LOhG
https://www.harborfreight.com/4-inch-magnetic-parts-tray-90566.html
Universal ZIP sockets: (clones, used on my ZIF-64 test machine)
https://www.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)
http://www.retrotink.com/
Plato (Clone) Side Cutters: (order five)
https://www.ebay.com/itm/1-2-5-10PCS-Micro-Scissor-125mm-PLATO-170-Electronics-Cutter-Side-Cutting-Pliers/163458746184
Heat Sinks:
https://www.aliexpress.com/item/32537183709.html
Little squeezy bottles: (available elsewhere too)
https://amzn.to/3b8LOOI
Links
My GitHub repository:
https://github.com/misterblack1?tab=repositories
Commodore Computer Club / Vancouver, WA – Portland, OR – PDX Commodore Users Group
https://www.commodorecomputerclub.com/
Instructional videos
My video on damage-free chip removal:
https://www.youtube.com/watch?v=XQVjwPsVFd8
Music
Intro music and other tracks by:
Nathan Divino
@itsnathandivino IBM PC 5150 repair: the motherboard lives!](https://i.ytimg.com/vi/VNgg3hsabAw/mqdefault.jpg)
![Challenge accepted: Fault finding on the broken Brazilian Apple II clone (MILMAR Part 2)
We are back on the MILMAR Brazilian Apple II clone. We left off in Part 1 with this machine showing some signs of life, but not on-screen activity of any kind. Lets see if I can finally revive this machine.
Part 1: https://www.youtube.com/watch?v=YLML3JnprNo
Part 2: This part!
Part 3: https://youtu.be/3xD52i4xWak
Part 4: Coming soon
Links
Dead test ROM:
https://github.com/misterblack1/appleII_deadtest
MILMAR repo including special diag ROMs:
https://github.com/misterblack1/milmar_appleII
6502 datasheet:
https://www.princeton.edu/~mae412/HANDOUTS/Datasheets/6502.pdf
Apple II Circuit Description:
https://mirrors.apple2.org.za/Apple%20II%20Documentation%20Project/Books/W.%20Gayler%20-%20The%20Apple%20II%20Circuit%20Description.pdf
Font editors:
https://github.com/misterblack1/font_editors
Brazilian Apple II clones, unboxing:
https://www.youtube.com/watch?v=YwVgmuYc708
Adrians Digital Basement ][ (Second Channel)
https://www.youtube.com/channel/UCbtwi4wK1YXd9AyV_4UcE6g
Support the channel on Patreon:
https://www.patreon.com/adriansdigitalbasement
My GitHub repository:
https://github.com/misterblack1?tab=repositories
Instructional videos
My video on chip removal without damage:
https://www.youtube.com/watch?v=XQVjwPsVFd8
Music
Intro music and other tracks by:
Nathan Divino
@itsnathandivino Challenge accepted: Fault finding on the broken Brazilian Apple II clone (MILMAR Part 2)](https://i.ytimg.com/vi/VWdBIEqTIVs/mqdefault.jpg)
![Fixing a broken switch mode power supply (Lucas Deeco ST3220)
Its time to finish up the repairs on the Lucas Deeco terminal and see how it works as an actual terminal.
Part 1: https://youtu.be/WSnk5ZbrWAo
Part 2: This part!
Links
Manual:
https://archive.org/details/lucas-deeco-sealtouch-graphics-terminal-applications-manual
ROM descrambling and other info:
https://github.com/misterblack1/lucasdeeco
Planar Systems EL8358HR
https://www.eldisplays.com/content/EL8358HR.pdf
Photos and ROM dumps:
https://archive.org/details/lucas-deeco-seal-touch/
Historical copy of Lucas Deecos website:
https://web.archive.org/web/19980130115145/http://www.deeco.com/
Patents:
https://patents.google.com/patent/US4812830A/en
https://patents.google.com/patent/US4893120A/en
Adrians Digital Basement Merch store:
https://my-store-c82bd2-2.creator-spring.com/
Adrians Digital Basement ][ (Second Channel)
https://www.youtube.com/channel/UCbtwi4wK1YXd9AyV_4UcE6g
Support the channel on Patreon:
https://www.patreon.com/adriansdigitalbasement
My GitHub repository:
https://github.com/misterblack1?tab=repositories
Tools
Deoxit D5:
https://amzn.to/2VvOKy1
http://store.caig.com/s.nl/it.A/id.1602/.f
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/digital-oscilloscopes/1000z/
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/33000308958.html
TS100 Soldering Iron:
https://amzn.to/2K36dJ5
https://www.ebay.com/itm/TS100-65W-MINI-Digital-OLED-Programmable-Soldering-Iron-Anti-static-Structure/113382669853
EEVBlog 121GW Multimeter:
https://www.eevblog.com/product/121gw/
DSLogic Basic Logic Analyzer:
https://amzn.to/2RDSDQw
https://www.ebay.com/itm/USB-Logic-DSLogic-Basic-Analyzer-16Ch-100MHz-4Ch-400MHz-Xilinx-Spartan-6-FPGA/202543965672
Magnetic Screw Holder:
https://amzn.to/3b8LOhG
https://www.harborfreight.com/4-inch-magnetic-parts-tray-90566.html
Universal ZIP sockets: (clones, used on my ZIF-64 test machine)
https://www.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)
http://www.retrotink.com/
Plato (Clone) Side Cutters: (Order Five)
https://www.ebay.com/itm/1-2-5-10PCS-Micro-Scissor-125mm-PLATO-170-Electronics-Cutter-Side-Cutting-Pliers/163458746184
Heat Sinks:
https://www.aliexpress.com/item/32537183709.html
Little squeezy bottles: (available elsewhere too)
https://amzn.to/3b8LOOI
Instructional videos
My video on chip removal without damage:
https://www.youtube.com/watch?v=XQVjwPsVFd8
Music
Intro music and other tracks by:
Nathan Divino
@itsnathandivino Fixing a broken switch mode power supply (Lucas Deeco ST3220)](https://i.ytimg.com/vi/VXDWrebmlNg/mqdefault.jpg)
![The Pravetz 8D: An obscure clone of an Oric Atmos
We are entering uncharted territory! On the bench we have a Bulgarian Pravetz 8D computer, a clone of the Oric 1 and Oric Atmos, all computers I know nothing about. Lets see what this machine is all about.
Links
Oric-1 Review by Nostalgia Nerd:
https://www.nostalgianerd.com/oric-1-review/
Pinouts for the Oric-1 (and Pravetz 8D)
https://www.defence-force.org/computing/oric/hardware/video/index.htm
https://computarium.lcd.lu/photos/albums/ORIC_1/album/slides/DSC03700.html
Wikipedia:
https://en.wikipedia.org/wiki/Oric_(computer)
https://en.wikipedia.org/wiki/Pravetz_(computer)
https://archive.org/details/oric-1-basic-programming-manual/page/147/mode/2up
Adrians Digital Basement ][ (Second Channel)
https://www.youtube.com/channel/UCbtwi4wK1YXd9AyV_4UcE6g
Support the channel on Patreon:
https://www.patreon.com/adriansdigitalbasement
My GitHub repository:
https://github.com/misterblack1?tab=repositories
Instructional videos
My video on chip removal without damage:
https://www.youtube.com/watch?v=XQVjwPsVFd8
Music
Intro music and other tracks by:
Nathan Divino
@itsnathandivino The Pravetz 8D: An obscure clone of an Oric Atmos](https://i.ytimg.com/vi/Vc4dUQ48gzo/mqdefault.jpg)
![We made some unbelievable discoveries about this Plexus P/20!
We are back with the broken Plexus P/20. In this video I talk about some amazing discoveries weve made on this machine which gives me the right information and the tools I need to attempt to repair it.
Part 1: https://youtu.be/iltZYXg5hZw
Part 2: https://youtu.be/lCPZAYvk940
Part 3: https://youtu.be/_IrxvDE6Fyo
Part 4: This part
00:00 - Plexus Recap
01:23 - Intro
01:40 - Fixing the Reset Fault
10:22 - WTF is Error 4F02?
16:42 - Enter Usagi Electrics Community
18:55 - A Literal Pot of Gold
25:44 - Back to the Community
27:04 - Error 4F02 - No Ram Detected
28:02 - 68000 Memory Management
32:58 - Looking for a Mapper Signal
36:01 - A Huge Smoking Gun
38:36 - Troubleshooting Memory Again
45:06 - Replacing the Flip-Flop (Chip U4F)
50:45 - This is Freakin Good
53:05 - Trying to Boot Into UNIX
55:17 - Whats Next
Links
Plexus P/20 Discord channel at Usagi Electric:
https://discord.gg/rYX6es6cbA (Plexus channel)
General Adrians Digital Basement channel:
https://discord.gg/Nhe8VHqZny
My Github Repo (with ROM dumps and images)
https://github.com/misterblack1/plexus-p20
Plexus P/20 Brochure:
http://www.bitsavers.org/pdf/plexus/brochures/Plexus_P15_P20_Brochure_1985.pdf
Plexus Unix:
http://www.bitsavers.org/pdf/plexus/brochures/Plexus_SYS_5.2_Brochure_1985.pdf
MFM emulator:
https://www.pdp8online.com/mfm/mfm_old.shtml
Fujitsu Hard Drive Brochure:
https://archive.org/details/bitsavers_fujitsubro1984_2565589
Omti 5200 Manual:
https://oldcomputers.dyndns.org/public/pub/roms/omti-5400/omti_5000_series_reference_aug85.pdf
Adrians Digital Basement Merch store:
https://my-store-c82bd2-2.creator-spring.com/
Adrians Digital Basement ][ (Second Channel)
https://www.youtube.com/channel/UCbtwi4wK1YXd9AyV_4UcE6g
Support the channel on Patreon:
https://www.patreon.com/adriansdigitalbasement
My GitHub repository:
https://github.com/misterblack1?tab=repositories
Tools
Deoxit D5:
https://amzn.to/2VvOKy1
http://store.caig.com/s.nl/it.A/id.1602/.f
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/digital-oscilloscopes/1000z/
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/33000308958.html
TS100 Soldering Iron:
https://amzn.to/2K36dJ5
https://www.ebay.com/itm/TS100-65W-MINI-Digital-OLED-Programmable-Soldering-Iron-Anti-static-Structure/113382669853
EEVBlog 121GW Multimeter:
https://www.eevblog.com/product/121gw/
DSLogic Basic Logic Analyzer:
https://amzn.to/2RDSDQw
https://www.ebay.com/itm/USB-Logic-DSLogic-Basic-Analyzer-16Ch-100MHz-4Ch-400MHz-Xilinx-Spartan-6-FPGA/202543965672
Magnetic Screw Holder:
https://amzn.to/3b8LOhG
https://www.harborfreight.com/4-inch-magnetic-parts-tray-90566.html
Universal ZIP sockets: (clones, used on my ZIF-64 test machine)
https://www.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)
http://www.retrotink.com/
Plato (Clone) Side Cutters: (order five)
https://www.ebay.com/itm/1-2-5-10PCS-Micro-Scissor-125mm-PLATO-170-Electronics-Cutter-Side-Cutting-Pliers/163458746184
Heat Sinks:
https://www.aliexpress.com/item/32537183709.html
Little squeezy bottles: (available elsewhere too)
https://amzn.to/3b8LOOI
Instructional videos
My video on damage-free chip removal:
https://www.youtube.com/watch?v=XQVjwPsVFd8
Music
Intro music and other tracks by:
Nathan Divino
@itsnathandivino We made some unbelievable discoveries about this Plexus P/20!](https://i.ytimg.com/vi/Ve1SuuRkx_o/mqdefault.jpg)
![Apple Lisa Part 7: The Lisa is cursed. It refuses to be fixed!
Part 7: Im back on the Apple Lisa, and in this video, the machines starts to fight back. It doesnt seem to want to be fixed. Can I overcome the issues?
Apple Lisa Playlist: https://www.youtube.com/playlist?list=PL4tFqFVNf5LQ-OE8JGNMJQoVOmgkyTorC
Part 1: https://youtu.be/77El1RmSY0Q
Part 2: https://youtu.be/zZ84-9zjmYY
Part 3: https://youtu.be/I6Mp-OVm92U
Part 4: https://youtu.be/zSlv7GZdFUg
Part 5: https://youtu.be/ohLDLJR-4-o
Part 6: https://youtu.be/HMEDMvb4IjM
Part 7: This part!
Part 8: Coming soon
Refurbishing the Lisa 400k Drive:
https://youtu.be/mQdmbfdMrog
Testing the Apple Profile drive:
https://youtu.be/m9KICV2AyI4
0:00 Intro
6:40 Fixing No Sound Problem
16:48 Fixing the Power light
24:38 Diagnostics with LisaTest
33:36 Testing and fixing RAM cards
1:14:04 Attempting to boot Lisa OS
1:17:20 Outro
Links
Lisa system hang when booting any diagnostic image or disk:
https://68kmla.org/bb/index.php?threads/lisa-system-hang-when-booting-any-diagnostic-image-or-disk.38198/page-2
LisaMandelbrot:
https://github.com/stepleton/LisaMandelbrot/tree/master
NeoWidEx (Widget utilities)
https://github.com/stepleton/NeoWidEx/blob/main/NeoWidEx.dc42.zip
How to decode Lisa RAM errors:
https://lisafaq.sunder.net/lisafaq-hw-mem_error.html
RGB2HDMI Github repo:
https://github.com/IanSB/RGBtoHDMI
Lisa ROM versions:
https://lisafaq.sunder.net/lisafaq-hw-rom_versions.html
FDC diagnostic process:
https://lisalist2.com/index.php?topic=431.0
Running a 2/10 IO board on a Lisa 2/5: (LITE adapter modification)
https://lisafaq.sunder.net/lisafaq-hw-io_substitution.html
Apple Lisa keyboard adapter:
https://www.tindie.com/stores/arcanebyte/
Alexs Github with replacement Lisa PCBs:
https://github.com/alexthecat123/Lisa-PCBs
Adrians Digital Basement ][ (Second Channel)
https://www.youtube.com/channel/UCbtwi4wK1YXd9AyV_4UcE6g
Support the channel on Patreon:
https://www.patreon.com/adriansdigitalbasement
My GitHub repository:
https://github.com/misterblack1?tab=repositories
Instructional videos
My video on chip removal without damage:
https://www.youtube.com/watch?v=XQVjwPsVFd8
Music
Intro music and other tracks by:
Nathan Divino
@itsnathandivino Apple Lisa Part 7: The Lisa is cursed. It refuses to be fixed!](https://i.ytimg.com/vi/Vwr8A6k9cNM/mqdefault.jpg)