Uploaded January 2012 | Updated September 2026, 2 weeks ago
This video shows a Macintosh 512k with newest revision "B" 64k ROMs retrofitted with a GCC HyperDrive, internal 10MB hard disk drive. This HyperDrive came out in 1985.
You can see how the shock absorbers work in my companion video here:
youtu.be/hIEC0CsrAxs
And I've posted several photos of this system on my Flickr and Google Photos accounts here:
flickr.com/search/?q=hyperdrive&w=66071596%40N00&m=tags
goo.gl/photos/orFejUKwgu1ynbbs7
This video shows a Macintosh 512k with newest revision "B" 64k ROMs retrofitted with a GCC HyperDrive, internal 10MB hard disk drive. This HyperDrive came out in 1985.
You can see how the shock absorbers work in my companion video here:
youtu.be/hIEC0CsrAxs
And I've posted several photos of this system on my Flickr and Google Photos accounts here:
flickr.com/search/?q=hyperdrive&w=66071596%40N00&m=tags
goo.gl/photos/orFejUKwgu1ynbbs7
![Late 2009 iMac 27 Video Card Repair [4850 Bake]](https://i.ytimg.com/vi/v1DXBLkiqFM/mqdefault.jpg "Late 2009 iMac 27 Video Card Repair [4850 Bake]
This is my 1st bake video which shows motherboard removal. Watch my 2nd Bake Video to do the bake WITHOUT removing the motherboard (and read the text description under that video too): https://youtu.be/6BJGLFCigdA
💁🏼♂️ Have success? Please log your Completion on my iFixit Guide page at the following link by scrolling down to the Conclusion box and clicking on the Give the author +30 points! button. Youll need an iFixit account but its free & easy. https://bit.ly/2nCnNan
🤔 Think the bake is crazy? Note the NeXT motherboard was also baked (31m56s):
https://youtu.be/92NNyd3m79I?t=1916
🛠 TOOLS to open & close the 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
🔦 OTHER ITEMS needed or recommended:
• Thermal Pastes (2 types REQUIRED!)
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
• Philips #1 + screw driver (for RAM door): https://amzn.to/38VWOgK
• Anti-static wrist strap (connect wire to earth ground): https://amzn.to/2uSTy74
• Dust blower - Giottos Rocket Blaster Large: https://amzn.to/2OgHHXt
• ISO Alcohol Spray 99.9% (to remove old thermal paste): https://amzn.to/3hD0fOJ
• Swabs & Tissues (for cleaning off the old thermal paste)
• Microfiber cloth (for cleaning the screen/glass)
• Flashlight (to peer into the dark spaces inside the iMac)
• Aluminum Foil (make feet to raise up video card in oven)
• OVEN set to 200°C/400°F (without which, this repair is in vain)
• Time & Patience
► I used a Samsung EVO 850 1TB SSD to replace the stock Apple hard drive, but the 860 EVO or Crucial MX500 are equivalent. To use an SSD in late 2009 27 iMac, youll also need a special mounting bracket and a separate temperature sensor:
• Bracket: https://amzn.to/37Zn4qg
• Sensor: https://amzn.to/3b3knWU
• EVO 860 (1TB): https://amzn.to/2RKem9M
-or-
• Crucial MX500 (2TB): https://amzn.to/3bxHybf
💵 AMAZON pricing is exactly the same even if you dont use my links, but if you do kindly purchase within 24 hours of clicking my links, I receive a tiny commission (TINY!) which helps to support this Channel. NOTE! If you add above items to your Cart but wait more than 24 hours to purchase, I receive no commission.
📷 4850 Card Photos (cleaned):
TOP: https://flic.kr/p/RjLLCd
BTM: https://flic.kr/p/RjLKGf
♨️ I baked the Radeon 4850 video card at 200°C/392°F for 9 minutes. I chose 9 minutes because after reading much about this subject, some people said 8 minutes and others 10, so I chose the average.
‼️ If you use Arctic Silver 5 like I did, dont use too much because when the heatsink presses down on it, excess paste may spill onto the tiny capacitors surrounding the GPU and the capacitive nature of that paste can cause problems. Arctic MX-4 which is not electrically conductive, so you can use that instead on the GPU. But I still recommend getting the K4 Pro and K5 Pro dual paste kit because you need a thermal pad replacement for the memory chips on the video card.
😎 Fan Control Apps to keep your iMac running cooler. I’m using both on different Macs and can therefore recommend either of these:
• Macs Fan Control: https://www.crystalidea.com/macs-fan-control
• smcFanControl: https://www.eidac.de
💁♂️ Most people in the Comments section who tried the bake find success. Few have serious problems. Those with problems ask and I try to help.
Several people have said you dont need to remove the motherboard. My answer to that is, yes you do if you want to change the BR2032 battery on the back side of the motherboard. Even if you dont think you want to change the battery, at least remove the old one. Even lithium button cell batteries leak after many years of being installed in electronics. And for those of you who dont care about any of that, simply watch my 2nd bake video to see how to go about the bake WITHOUT removing the motherboard.
►►► July 11, 2017: My 1st bake lasted only 4 months. What inspired me to do the 1st bake was another YouTuber who did the same repair and who said recently his iMac had been running fine for 17 months since the repair as of Feb. 2017. The GOOD NEWS is my 2nd bake lasted 2.5 years! Info on my 3rd bake is here: https://youtu.be/teV_atLUlpM
💰SUPPORT THIS CHANNEL
Buy me a drink or otherwise support my content creation: https://www.paypal.me/supportJDW
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Thank you for watching!
#Apple #Macintosh #iMac #VideoCard #JDW")
![Apple HD20, SONY PSU Recapping [Part 2 of 2]](https://i.ytimg.com/vi/ve5PlBCBHfQ/mqdefault.jpg "Apple HD20, SONY PSU Recapping [Part 2 of 2]
See me take apart, measure, and recap the SONY power supply in an Apple Hard Disk 20 (not SCSI) with help from my HAKKO FR-301. Watch my Mac 128Ke boot the HD20 with a daisy-chained Tash20. Part 1 is here: https://youtu.be/pa4y1jRSdew
🔎 INDEX
0:00 — Measurements: Pre-Recap
9:50 — PSU Disassembly
12:26 — Electrolytic Capacitors
13:47 — Recapping & ESR Measurements
33:58 — Reassembly Tip
34:14 — Measurements: Post-Recap
36:03 — Boot Test with Mac 128Ke
37:01 — Daisy Chaining, FloppyEMU & Tash20
39:11 — Closing Thoughts
🛒 BUY
• CAPACITORS, (Rodime HDD & Sony PSU): https://tinyurl.com/5av5nbtn
• Noctua FAN (NF-A6x25): https://amzn.to/3LWl8VS
• Heat Shrink Tubing Kit (for the FAN install & misc. uses): https://amzn.to/34Cwzzj
• DE-5000 (LCR meter): https://amzn.to/3KWrMM4
• Fluke 116 (all around great meter): https://amzn.to/3IMJNJT
• Cheap Multimeter (I actually own one): https://amzn.to/3Qe98Ao
• Hakko FR-301 (Amazon USA): https://amzn.to/3tfgziR
I purchased this one on Amazon Japan: https://amzn.to/3tuQeO0
• Hakko Soldering Station (FX888DX): https://amzn.to/4kEttgq
or
• Hakko Soldering Station FX951: https://amzn.to/3XKfYC4
• Jumper Wires (for meter testing): https://amzn.to/45I1TGz
• MG Chemicals Flux: https://amzn.to/3kuAcsZ
• Desoldering wick: https://amzn.to/4jbseUW
• Generic Solder 100g (60-40 Leaded Rosin Core 0.6mm, 2% flux): https://amzn.to/3FDRscn
• Kester Solder 454g (60-40 Leaded Rosin Core 0.8mm, 3.3% flux): https://amzn.to/3tLFwT9
• 2-spool Solder Holder: https://amzn.to/39hIMbt
• Hakko 599B Tip Cleaner: https://amzn.to/3RHy5o4
• HAKKO Fume Extractor: https://amzn.to/3MApWyb
• 99% ISO Alcohol (Spray Bottle!): https://amzn.to/3ae4fG6
• 99% ISO Alcohol: https://amzn.to/3R5TRCk
💁♂️2 alcohol choices because its often out of stock. 70% will work, 91% is better, but 99% is best for electronics cleaning (fast drying & no residue).
• FloppyEMU: https://bit.ly/2BA8yru
• Tash20 Budget Model: https://ko-fi.com/s/77f53b293e
• Tash20 Tiny External: https://ko-fi.com/s/2bfee029f5
• Fat Mac Switcher (128K & 512K in 1 Mac!): https://bit.ly/43GDQYj
• ROM-inator (change your boot chime & more!): https://bit.ly/3qQAKCE
NOTE: Links to Amazon USA in this text description are affiliate links that may generate small revenue for this channel if something is purchased within 24 hours of clicking the link.
📚 REFERENCE
• HD20-related downloads: http://bitsavers.org/pdf/apple/disk/hd20/
• Datasheet for the black safety capacitors you do NOT need to replace: https://tinyurl.com/6p8r6bzt
• Tash20 creation thread: https://tinyurl.com/mreskuxh
• Rodime Drive Capacitors: https://bit.ly/3ZOkuiF
• MacGUI, HD20 Article: https://bit.ly/46qiTlK
• Macworld Review of HD20: https://bit.ly/3PNCiG8
• MacGUI, Lubricating the Rodime 552: https://macgui.com/news/article.php?t=445
⚠️ NOTE: You must be LOGGED IN to see the full article. Sorry. Its his rule, not mine.
• HD20 Teardown: https://oldcrap.org/2019/06/21/macintosh-hard-disk-20/
💾 SOFTWARE
• MacMan (PacMan game): https://macintoshgarden.org/games/macman
• HD20 Boot Floppy (for Mac512K with 64K ROMs): https://bit.ly/45ryUX8
🙏 THANK YOU, Paypal supporters!
• Frank Conforti 🇺🇸 (monumental supporter)
• Philippe Astier 🇫🇷 (monthly supporter)
• Mauro Acciaccaferri 🇮🇹 (monthly supporter)
• Gavin Maxwell 🇦🇺 (monthly supporter)
• Mark B. Newlon 🇺🇸 (repeat supporter)
• Brian Gorham 🇺🇸 (new supporter)
• Francesco Restuccia 🇮🇹Sicily (first time supporter)
💰SUPPORT ME
https://www.paypal.me/supportJDW
📺 SUBSCRIBE
http://www.youtube.com/c/JDW11/?sub_confirmation=1
🎬 MY VIDEOS
https://www.youtube.com/user/JDW26/videos
#AppleHD20 #Recapping #HakkoFR301 #JDW1")
![Logic board & Keyboard Tantalum RECAP [Macintosh 128k, 512k & Plus]](https://i.ytimg.com/vi/vz2NGF5Vuao/mqdefault.jpg "Logic board & Keyboard Tantalum RECAP [Macintosh 128k, 512k & Plus]
Recapping the Mac 128k, 512k, 512ke (& Plus) motherboard & keyboard. Caps Lock key repair also shown. ⚠️ MOUSE not recapped in my video because there is no electrolytic capacitors inside either of mine, but there may be in yours. See 🐭 MOUSE RECAP below.
🔎 INDEX
0:00 — Intro
1:02 — Opening Case & CRT Discharge
1:55 — Motherboard & Capacitor Overview
8:27 — Motherboard Recapping
32:09 — Keyboard Recapping
37:29 — Caps Lock Key Repair
44:03 — Testing
45:46 — Closing Words
🎬 Dont miss my Mac 128K~Plus ANALOG BOARD Recapping Video: https://youtu.be/Ng8F_QVgaTc
🛒 CAPACITORS for 128k, 512k & 512ke Motherboard & Keyboard (shown in my video):
• Mouser Cart (all Tantalum): https://bit.ly/3f26YAI
or
• Console5 (motherboard only!): https://bit.ly/3ksBSmY
(Includes 3 Nichicon VX axial electrolytic caps: 2pcs 33uF 16v & 1pc 4.7uF 50v)
Datasheet: https://bit.ly/2Kfamgt
🛒 CAPACITORS for Mac Plus Motherboard & Extended Keyboard:
⚠️ Check your extended keyboards capacitors before buying replacements!
• Mouser Cart A (keyboard caps are for Mitsumi Radial capacitor edition ONLY!): https://bit.ly/3kz1zSM
🙏Thanks to Daniel Hansen (& Attila Fehérvári) for confirming the 2 Radial caps on his Mitsumi extended keyboard!
or
• Mouser Cart B (keyboard caps are for Alps Axial capacitor edition ONLY!): https://bit.ly/3pryNr3
🙏Thanks to Mighty Jabba (68kMLA) for confirming the 2 Axial caps on his Alps extended keyboard!
(NOTE: If your extended keyboard is the SMK version, leave a comment about your capacitors.)
or
• Console5 (motherboard only): https://bit.ly/2IHr7An
(Includes 6 Nichicon VX axial electrolytic caps: 5pcs 33uF 16v & 1pc 1uF 50v)
Datasheet: https://bit.ly/2Kfamgt
⌨️ Extended Keyboard Variants: https://deskthority.net/wiki/Apple_M0110A
🐭 MOUSE RECAP
Older mice like mine dont have electrolytic capacitors and is why I didnt mention mice in my video, but sfiera at the 68kMLA kindly showed me there are indeed electrolytic caps in the newer Mac Plus edition mouse: https://bit.ly/2H8yNuL
Have a newer edition mouse? Just add 2pcs of this electrolytic cap to your Mouser Cart: https://bit.ly/38VdZT3
(Tantalum replacements never need to be replaced, but the TAP476M010SCS is over $5 each. Yowza!)
🛠️ TOOLS & THINGS TO BUY:
• Torx T15 with LONG neck (to open Mac): https://amzn.to/3qLyJYb
• Bulldog Clip (helpful to pry off back case): https://amzn.to/2H7lIhF
• 99% ISO Alcohol (Spray Bottle): https://amzn.to/3ae4fG6
• 99% ISO Alcohol: https://amzn.to/3NoFkxN
• 99% ISO Alcohol: https://amzn.to/2YsK8v3
💁♂️3 alcohol choices because its often out of stock. 70% will work, 91% is better, but 99% is best for electronics cleaning.
• Cotton Swabs
• Anti-static pad with Wrist Strap (16x24 / 41x61cm): https://amzn.to/3bfAE9Z
or
• Hi-temp Anti-static pad with Wrist Strap (16x12 / 41x30cm): https://amzn.to/2SOm1nK
• Wall socket Ground adapter for banana-jack Wrist Strap: https://amzn.to/2Yvq5ge
• UV Solder Mask (Green): https://amzn.to/3hogoaE
• Needle Nose Pliers: https://amzn.to/2U9Kc0M
• Wire Nippers 4.5: https://amzn.to/2J4Wkdk
• Phillips Screwdriver (+)
• Flat-head (-) Screwdriver for CRT discharging
• Wire with alligator clips at both ends (for CRT discharging)
• Soldering iron with °F-only LCD & Solder Kit (80W, cheap!): https://amzn.to/36BYi0K
or
• Soldering Station (120W, ESD safe): https://amzn.to/30g1Frt
• Solder (Leaded Rosin Core 1.6mm): https://amzn.to/3IGuxxm
• Solder (Leaded Rosin Core 0.82mm): https://amzn.to/3GzJbVl
• MG Chemicals FLUX: https://amzn.to/3kuAcsZ
• Desoldering wick: https://amzn.to/3iMAnA5
💁♂️TIP: Set soldering iron temperature to 350°C. Dont use lead-free solder.
• DE-5000 Handheld LCR Meter (Amazon US): https://amzn.to/2ScttJz
💁♂️The best handheld meter to check capacitor ESR. Includes all 3 accessories: TL-21, TL-22 & TL-23.
🔋 PRAM Battery: https://amzn.to/2IB4VHI
💵 NOTE: Your price on Amazon (US) is the same even if you dont click the amzn.to Affiliate links above, but if you do kindly click & purchase within 24 hours, Amazon may pay me a small commission on all qualifying items in your Cart (even items not linked above).
📚 USEFUL INFORMATION:
• Mac512 Motherboard Schematic: https://bit.ly/38Nhmvc
• Keyboard Schematic: https://bit.ly/38MASbe
• Mac 128k-512ke Service Manual: https://bit.ly/2wiiSVn
• Mac Plus Service Manual: https://bit.ly/2vIo0lg
• Classic Mac Repair Notes: https://bit.ly/35wrPsQ
• Macintosh Repair & Upgrade Secrets book by Larry Pina: https://amzn.to/3diJZjB
(Free, scanned copy: https://bit.ly/2WtzaFv )
• Keyboard One-shot chip SN74LS123: https://bit.ly/2IG9u3D
💾 Bouncing ball app shown at close of my video: https://bit.ly/3fa5ggD
🗣 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
📺 SUBSCRIBE:
http://www.youtube.com/c/JDW11/?sub_confirmation=1
#Apple #Macintosh128k #Mac512 #JDW")
