Uploaded November 2019 | Updated September 2026, 2 weeks ago
Video introduces the 1991 Apple TechStep diagnostic tool and shows how it is used with an Apple Hard Disk 20SC and Macintosh SE/30.
🔍 INDEX:
0:00 Intro
0:43 Unbagging
1:58 Packing List
2:50 ROM Packs
6:51 Port Pack (Connectors)
10:05 Floppies
11:31 Software Overview
15:45 Apple Hard Disk SC test
19:17 SE/30 test (working, stock)
26:30 Saving & Reading Log File
31:01 SE/30 test (working, upgrades)
38:29 SE/30 test (bad motherboard)
44:45 Conclusion
🔴 Jul. 2023 NEWS: A hobbyist project by Max1zzz has recreated the TechStep:
bit.ly/3CZ3YSp
🔴 Mar. 2022 NEWS: A hobbyist project has recreated the cartridges & labels: tinkerdifferent.com/threads/apple-techstep-replacement-roms-cartridges-software-and-more.1023
🔴 Feb. 2025 NEWS: Willem Jacobs of CayMac Vintage is now offering the TechStep recreation with permission from Max1zzz: ko-fi.com/s/aa01c62182
In my video, I showed 4 of the 5 ROM Packs:
1. CPU Tests Vol 1, v1.1.1: Classic, SE, SE/30, II, IIx, IIcx
2. CPU Tests Vol 2, v1.0: LC, LC II, Classic II
3. CPU Tests Vol 3, v1.0: IIci, Iici, Iivi, Iivx, Performa600
4. SCSI HD Tests, v1.0: For Apple branded drives
But as of 2023, I now have the missing 5th cartridge!
5. CPU Tests Vol 4 v1.0: LC III, LC 520, Color Classic, Performa 250, 450, 520
💾 Floppy Disk images (with Hypercard stack): macintoshrepository.org/25829-apple-techstep-software
(You'll also find a SIT archive of 18 PDF files extracted from an Apple Service Source CD-ROM.)
🗒️ TechStep Manuals:
ver.1: tinyurl.com/yeafxujb
ver.2: tinyurl.com/muj28a2r
🎥 Apple's official TechStep intro video (1991):
youtu.be/s_ixTSlWRnk
📰 AppleCAT was the precursor to the TechStep: tinkerdifferent.com/threads/anyone-else-have-an-apple-c-a-t-techstep-precurosr.1738
🗣 Join us at tinkerdifferent.com and the "Vintage Apple Macintosh Enthusiasts" FaceBook group for more vintage Mac tips, trade and help.
📷 My TechStep photos on FLICKR: https://flic.kr/s/aHsjFF86mK
💰SUPPORT THIS CHANNEL
If you wish to buy me a drink or otherwise support my content creation: paypal.me/supportJDW
🎬 MY OTHER VIDEOS
youtube.com/user/JDW26/videos
📺 Please SUBSCRIBE:
youtube.com/c/JDW11/?sub_confirmation=1
#Apple #TechStep #Macintosh #JDW
Video introduces the 1991 Apple TechStep diagnostic tool and shows how it is used with an Apple Hard Disk 20SC and Macintosh SE/30.
🔍 INDEX:
0:00 Intro
0:43 Unbagging
1:58 Packing List
2:50 ROM Packs
6:51 Port Pack (Connectors)
10:05 Floppies
11:31 Software Overview
15:45 Apple Hard Disk SC test
19:17 SE/30 test (working, stock)
26:30 Saving & Reading Log File
31:01 SE/30 test (working, upgrades)
38:29 SE/30 test (bad motherboard)
44:45 Conclusion
🔴 Jul. 2023 NEWS: A hobbyist project by Max1zzz has recreated the TechStep:
bit.ly/3CZ3YSp
🔴 Mar. 2022 NEWS: A hobbyist project has recreated the cartridges & labels: tinkerdifferent.com/threads/apple-techstep-replacement-roms-cartridges-software-and-more.1023
🔴 Feb. 2025 NEWS: Willem Jacobs of CayMac Vintage is now offering the TechStep recreation with permission from Max1zzz: ko-fi.com/s/aa01c62182
In my video, I showed 4 of the 5 ROM Packs:
1. CPU Tests Vol 1, v1.1.1: Classic, SE, SE/30, II, IIx, IIcx
2. CPU Tests Vol 2, v1.0: LC, LC II, Classic II
3. CPU Tests Vol 3, v1.0: IIci, Iici, Iivi, Iivx, Performa600
4. SCSI HD Tests, v1.0: For Apple branded drives
But as of 2023, I now have the missing 5th cartridge!
5. CPU Tests Vol 4 v1.0: LC III, LC 520, Color Classic, Performa 250, 450, 520
💾 Floppy Disk images (with Hypercard stack): macintoshrepository.org/25829-apple-techstep-software
(You'll also find a SIT archive of 18 PDF files extracted from an Apple Service Source CD-ROM.)
🗒️ TechStep Manuals:
ver.1: tinyurl.com/yeafxujb
ver.2: tinyurl.com/muj28a2r
🎥 Apple's official TechStep intro video (1991):
youtu.be/s_ixTSlWRnk
📰 AppleCAT was the precursor to the TechStep: tinkerdifferent.com/threads/anyone-else-have-an-apple-c-a-t-techstep-precurosr.1738
🗣 Join us at tinkerdifferent.com and the "Vintage Apple Macintosh Enthusiasts" FaceBook group for more vintage Mac tips, trade and help.
📷 My TechStep photos on FLICKR: https://flic.kr/s/aHsjFF86mK
💰SUPPORT THIS CHANNEL
If you wish to buy me a drink or otherwise support my content creation: paypal.me/supportJDW
🎬 MY OTHER VIDEOS
youtube.com/user/JDW26/videos
📺 Please SUBSCRIBE:
youtube.com/c/JDW11/?sub_confirmation=1
#Apple #TechStep #Macintosh #JDW
![Macintosh SE Reloaded BUILD [Part 2]](https://i.ytimg.com/vi/7KpzCJBYt5E/mqdefault.jpg "Macintosh SE Reloaded BUILD [Part 2]
Watch me continue to solder new components to this reverse-engineered Mac SE motherboard. Please watch Part I video first. PLAYLIST of all my SE Reloaded videos: https://bit.ly/3xHSp02
🔎 INDEX
0:00 — Intro
1:44 — Stock Board Test
3:46 — CR1/2/3 Diodes
9:06 — J1 Headphone Jack
12:30 — J2/3 Serial Connectors
14:53 — J4 Ext. SCSI
18:09 — J5 Int. SCSI (Bad News!)
18:57 — J6 Ext. Floppy Connector
19:54 — J7/8 Int. Floppy Connectors
25:15 — J9/10 ADB Connectors
29:12 — IC Sockets
39:48 — 68000 Socket
41:07 — BBU Socket
43:27 — Bourns Filters
45:22 — U11A ADB Filter
45:51 — U2E & U2F (74ACT257)
46:19 — U11F & U12F (74FCT245)
46:47 — U10D 15.6672MHz XTAL
47:54 — J12 Main Connector
49:13 — PRAM Batt. Holder
50:23 — SIMM Sockets
51:11 — J13 PDS Connector (Bad News!)
53:46 — Closing Words
55:19 — MacEffects 10% Discount
59:00 — Donations & Thanks
🗣️ SE Reloaded discussion on TinkerDifferent: https://bit.ly/3yLLjJ0
🛒 BUY
• (Mouser Cart in My BOM under 📚 REFERENCE below.)
• SE Reloaded board from MacEffects (red): https://bit.ly/39yehBv
• Desoldering Needle Kit: https://amzn.to/3NIQgqL
• Lead-forming tool (if you dont want to eye-it like me): https://amzn.to/3G0Sejb
• 10x Loupe: https://amzn.to/3tW1lf0
• 5x/11x Magnifier: https://amzn.to/3lGogXI
• Torx T15 with LONG neck (to open Mac): https://amzn.to/2ScAskx
• Hakko Soldering Station (Fisher Price colors): https://amzn.to/3ArxBJ6
💁♂️TIP: Use 350°C & Leaded solder.
• Solder (Leaded Rosin Core 1.6mm): https://amzn.to/3IGuxxm
• Solder (Leaded Rosin Core 0.8mm): https://amzn.to/3GzJbVl
• 2-spool Solder Holder: https://amzn.to/39hIMbt
• AMTECH 559 V2 Flux (flawed plunger): https://amzn.to/3Muf4C2
• MG Chemicals Flux (great plunger): https://amzn.to/3kuAcsZ
• Desoldering wick: https://amzn.to/3iMAnA5
• Fume Extractor: https://amzn.to/3MApWyb
• 99% ISO Alcohol (Spray Bottle!): https://amzn.to/3ae4fG6
• 99% ISO Alcohol: https://amzn.to/3NoFkxN
• 99% ISO Alcohol: https://amzn.to/2MkjS3h
💁♂️I gave you 3 alcohol choices above because its often out of stock. 70% will work, 91% is better, but 99% is best for electronics cleaning (fast drying & no residue).
• Spicy OClock (68040 Overclocker by Kay Koba): https://bit.ly/3rTXzTG
• 60ns 512K VRAM (by Mr. Fahrenheit): https://bit.ly/36sSsCi
💵 NOTE: Your price on Amazon (US only) is the same even if you dont click the amzn.to Affiliate links above, but if you do click & purchase within 24 hours, Amazon may pay me a small commission on qualifying items in your Cart.
📚 REFERENCE
• My BOM (newer than the paper version in my video): https://bit.ly/3MF7BA9
• BBU details & hi-rez scan: https://bit.ly/3aYKhiX
• Kais Main Github page: https://bit.ly/4mqHgIy
• Kais videos on the SE Reloaded: https://bit.ly/3yQqOea
• Mac SE Service Source Manual: https://bit.ly/3MykhsC
• Guide to Macintosh Family Hardware: https://bit.ly/3lv4xLc
• Computer Chronicles video on the SE: https://youtu.be/JjHzPuGi5Js
• Motherboard Horror Pics 😱: https://bit.ly/3LxK2Yw
🙏 MY SINCERE THANKS to these recent Paypal contributors (May 2022):
• Philippe from France (2nd donation in the last 3 months)
• Gavin Maxwell from Australia (double thanks for a double donation!)
• Mark Jozaitis from the USA
• Victor Norgren from Sweden
• Mauro Acciaccaferri (monthly supporter)
• Mr. Fahrenheit (maker of 60ns VRAM: https://bit.ly/3zkzl9r )
NOTE: Stephen Arsenault of BetterBit designed the PCB, as I mention in my Spicy video here: https://youtu.be/JrmzIcdBNOY?t=1824
• Alexandre
🙇♂️ GENEROUS DONOR
• Marcus Hesse (donated SE MB w/ SpeedCard, works for BlackGlove: https://blackglove.com )
🙇♂️ SPECIAL THANKS
• Mike Morgano (sold me a hard to find Apple IIe card, Y-cable, disks & Manual)
💰HOW TO SUPPORT THIS CHANNEL
https://www.paypal.me/supportJDW
(If you do very kindly donate, it would be a wonderful help if you could let me know if I have permission to use your full name, or use something like John in Texas, when I give you public thanks in a future video. Pronunciation help is also appreciated!)
📺 Please SUBSCRIBE:
http://www.youtube.com/c/JDW11/?sub_confirmation=1
🎬 MY VIDEOS
https://www.youtube.com/user/JDW26/videos
🎶 Music Credits (all CC BY-SA 3.0 by Vyra)
• Night Out: https://bit.ly/3z4WsVj
• Rings of Jupiter: https://bit.ly/3arMi79
• Angels: https://bit.ly/3mhx6Ms
• Disco Metropolis: https://bit.ly/3QeZMTU
• Electric Night: https://bit.ly/3QduTzj
• Mars Colony: https://bit.ly/3MM9Ssy
• Running in the Streets: https://bit.ly/3aPkmKD
• Summer Nights: https://bit.ly/3Hc0I7H
• Wheelspin: https://bit.ly/3xQnwH7
#Macintosh #SEreloaded #Motherboard #JDW")
![GCC HyperDrive 10: History, Installation & Software [Part 3 of 3]](https://i.ytimg.com/vi/9c2eMR5h_NI/mqdefault.jpg "GCC HyperDrive 10: History, Installation & Software [Part 3 of 3]
A video game developer created the first internal hard drive for the Macintosh. Watch how that drive kit installs in a Mac512 and see how the included software works. This video is the third and final segment on General Computers HyperDrive.
🎬 Part 1 (10MB HDD Recap): https://youtu.be/okWqwhMlvK0
🎬 Part 2 (PSU Recap): https://youtu.be/19n_qTfP7Vw
🔎 INDEX
0:00 Intro & GCC History
3:29 HyperDrive Kit Overview
5:26 Installation
29:17 Software Overview
57:50 Closing Remarks & Thanks
🛒 THINGS TO BUY
• DeoxIT D5: https://amzn.to/3f92aeN
(I used this on all HyperDrive connectors & Killy clip too! Highly recommended!)
• Anti-static pad with Wrist Strap (16x24 / 41x61cm): https://amzn.to/3Zw6WKC
• Wall socket Ground adapter for banana-jack Wrist Strap: https://amzn.to/2Yvq5ge
• Torx T15 with T-grip & 9 neck: https://amzn.to/3ceQqWk
• Torx T15 with 18 neck: https://amzn.to/3B50iRA
• Bulldog Clip (helpful to pry off back case): https://amzn.to/2H7lIhF
• FloppyEMU: https://www.bigmessowires.com/shop/product/floppy-emu-model-c/
💵 NOTE: Your price on Amazon (US only) is the same even if you dont click the amzn.to Affiliate links above, but if you do kindly click and purchase within 24 hours, Amazon may pay me a small commission on all qualifying items in your Cart (even items not linked above).
🤓 NERDY STUFF
• HyperDrive 10 spun at 3600rpm
See Pg. 6: https://bit.ly/2Qzm3Sd
See Pg. 4: https://bit.ly/3rjHsLI
• SONY 3.5 400K Floppy Drive Rotational Speed: 390-600rpm
Mac512s Floppy Drive data transfer speed: 489.6 Kbps: https://bit.ly/2Qqe8q6
• Flash Drive replacement for HyperDrive: https://bit.ly/3metZ82
Related Video: https://youtu.be/guGSku-yRjI
• Make B&W bitmaps from your photos: https://29a.ch/ditherlicious/
(Resolution of your submitted photos is key to a good result. Try 640x480 to start.)
📚 RESOURCES
• HyperDrive Owners Guide, Install Manual & Software: https://bit.ly/3UfzDJd
• Hard Drive Bible: see pp.168-169 on slider: https://bit.ly/3cBzD08
• MMI 10MB HDD Specs: https://bit.ly/3tp3fUO
• 1985 HDDs compared (keyword searchable PDF): https://bit.ly/3lR3GDP
• Speed Test from July 1985: https://www.saildart.org/MAC.V3[BB,DOC]
(Search for MacWrite 4.5 Start.)
• System 6 on a Mac512 HACK: https://www.macgui.com/news/article.php?t=484
(Thank you, Dogcow!)
• HyperDrive 20 in Mac Plus: https://bit.ly/3rhpKsv
• Arcade Console Game Flyers: https://bit.ly/319BwdE
• How Ms. Pac-Mac was Made: https://bit.ly/3vRLPRL
• Crazy Otto game: https://bit.ly/3tQ1MWG
• GCC Laser Printers: https://bit.ly/3riQRmR
• GCC founder Doug Macrae details history: https://youtu.be/SW_qU8lkPac
💁♂️Many photos shown in my video are from Steven Szymanskis excellent Gallery SZY here: http://galleryszy.stevenanne.net/archives/gcc/
License: https://creativecommons.org/licenses/by/1.0/
• The dead link atop that page is partially archived here: https://bit.ly/2PoJYDf
📸 My HyperDrive Photos: https://bit.ly/3lS030n
💾 SOFTWARE & GAMES
• HyperDrive Software: https://bit.ly/3UfzDJd
• HyperDrive Disks & Labels: https://bit.ly/3rgjPUr
(NOTE: I made the customized floppy labels with the icons.)
• Missile Command online: https://bit.ly/3lSxy2M
• Mac Missles (shown in video): https://bit.ly/3sm9wzB
🗣 Helpful Groups:
• 68kMLA: http://68kmla.org
• Vintage Apple Macintosh Enthusiasts: https://bit.ly/2YgpDRb
• Vintage Macintosh Restoration & Preservation: https://bit.ly/2XKFzfK
💰SUPPORT THIS CHANNEL
https://www.paypal.me/supportJDW
🙏 MY SINCERE THANKS to the following Paypal supporters in March 2021:
• Rami from Copenhagen, Denmark
• Moazam Raja from Cupertino, CA
• Mauro Acciaccaferri
📺 Please SUBSCRIBE:
http://www.youtube.com/c/JDW11/?sub_confirmation=1
🎬 MY VIDEOS
https://www.youtube.com/user/JDW26/videos
MARCHintosh Event Logo concept & design by Javier Rivera
YouTube: https://www.youtube.com/channel/UC550QsLjbk-zxUv4u717EJQ
Twitter: @javierivera
MARCHintosh playlist: https://www.youtube.com/hashtag/marchintosh
#HyperDrive #Macintosh #MARCHintosh #JDW")
![AMD 6970M upgrade for 2009 iMac 27 [Video Card]](https://i.ytimg.com/vi/9dPsH1zIQMs/mqdefault.jpg "AMD 6970M upgrade for 2009 iMac 27 [Video Card]
Video shows how to install a Radeon 6970M video card (from a 2011 iMac) into a late 2009 27 iMac which originally came with a 4850 graphics card. And although I dont think CPU type matters in terms of compatibility with the 6970M, please note that my CPU is an i7.
⚠️ April 27, 2020: Please read my Pinned Comment and comments tied to it for the latest info. Specifically, my son discovered a big caveat that triggers a sudden power-off of the iMac. On May 3, 2020 I released a new video that offers all the details: https://youtu.be/n2a8oEI2y6U
💳 EBAY listing of the 6970M I purchased is no longer available, but the Hong Kong sellers page is found here:
https://www.ebay.com/usr/shawn882014
🍎 Apple Forum Discussion about replacement video cards that work in the late 2009 27 iMac: https://discussions.apple.com/thread/3029120
♨️ If your 2008~2011 iMacs video card is dead and youve never baked it before, I suggest you perform the bake before spending the money on a replacement video card. My BAKE VIDEOS are here: https://bit.ly/2UEOf4o
🔥 THERMAL PASTES I strongly recommend:
K4 & K5 Pro Kit: https://amzn.to/38WkEZO
-or-
K5 Pro (for chips other than GPU): https://amzn.to/33OIDJ6
& Thermal Grizzly Kryonaut (for GPU only): https://amzn.to/36NMQwu
🏥 Defective Video Card Symptoms. In my case, the iMac wouldnt boot fully and would freeze at the Apple logo screen with the progress bar only 50% finished, sometimes with screen artifacts. At times when it would boot to the desktop, there were artifacts that made using the computer impossible. In the case of my 3rd and 4th bakes though, the problem was the screen would stay dark.
🛠 TOOLS to open/close iMac:
• 2 strong suction cups for front glass removal: https://amzn.to/2tkcmvJ
• Torx T10 for LCD removal (T9 works but T10 is best) & T9 for video card removal. The following kit contains more than needed for the iMac, but its highly rated, has grippy handles and magnetic tips, and no 1 month+ wait from China: https://amzn.to/2UCaurK
-or-
Alternative kit, WRENCH style (cheaper): https://amzn.to/2wIgWWe
-or-
Alternative kit, BIT style (youll need a handle): https://amzn.to/2vRkUeC
I used the following 2 tools to cut the plastic piece inside the iMac, but any similar set of cutting tools will suffice. I just used what I had. But you should try to make straight cuts. Youll also need a pair of needle-nose pliers to rip off the cut pieces, and a razor blade Xacto knife.
• NS-04 Japanese Wire Cutters: https://amzn.to/3bEGUsJ
• Straight Cut Branch Cutters: https://amzn.to/3aAhwmV
🔦 OTHER ITEMS needed or recommended:
• Anti-static wrist strap (connect wire to earth ground): https://amzn.to/2uSTy74
• Dust blower - Giottos Rocket Blaster Large: https://amzn.to/2OgHHXt
• Microfiber cloth (for cleaning the screen/glass)
• Flashlight (to peer into the dark spaces inside the iMac)
💵 NOTE: Your price on Amazon (US only) is the same even if you dont click the amzn.to Affiliate links above, but if you do kindly click and purchase within 24 hours, Amazon may pay me a small commission on all qualifying items in your Cart (even items not linked above).
😎 Fan Control Apps to keep your iMac running cooler (Im using both on different Macs and can therefore recommend either):
• Macs Fan Control: https://crystalidea.com/macs-fan-control
• smcFanControl: https://www.eidac.de
💰SUPPORT THIS CHANNEL
If you wish to buy me a drink or otherwise support my content creation: https://www.paypal.me/supportJDW
📺 Please SUBSCRIBE:
http://www.youtube.com/c/JDW11/?sub_confirmation=1
#Apple #Macintosh #iMac #VideoCard #JDW
┄┄┄┄┄┄┄┄┄┄
🎵 Guiton Sketch by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: https://bit.ly/3bG4OUL
Artist: http://incompetech.com/
🎵 Radio Rock by Audionautix is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Artist: http://audionautix.com/")
