![Analog Board BEEFY COMPONENT UPGRADE for Color Classic & Mystic [Part 1 of 2] @JDW-](https://i.ytimg.com/vi/D8AyC8d6u4o/maxresdefault.jpg)
Uploaded August 2025 | Updated September 2026, 2 weeks ago
UPGRADE the hottest components on your Color Classic ANALOG BOARD for better cooling. And stay tuned for Part II, where I will convert my 68.4V VGA Mod to the 84V version for greater motherboard compatibility.
🎬Part 2 video: youtu.be/0PjAK8zTOTQ
🔎 *INDEX*
0:00 — Intro
1:43 — Removing the Rear Housing
3:02 — Thermal Measurements
9:56 — CRT Discharge & Disassembly
13:58 — Replacing Components
22:08 — Trace Repair
25:29 — Initial Testing
30:41 — Thermal Testing
35:42 — TinkerDifferent Discussion
37:09 — Closing Thoughts
🛒 *BUY THE COMPONENTS*
• Mouser Cart: bit.ly/4oaw9nU
or
• DigiKey Cart: digikey.com/short/d8m2zfdq
🤓 TIP! Want your replacement 18V Zener Diode at DL22 to run 20°C cooler? Check out my solution here (9/26/2025):
tinkerdifferent.com/threads/color-classic-analog-board-trouble.2367/page-5#post-40243
🛒 *FAMOUS UPGRADE BOOK FROM JAPAN*
• Doping Mac kick-started the CC mod scene in 1997 (written in Japanese): bit.ly/470U6rs
_(Limited Quantity: please buy it only if you will make good use of it.)_
🛒 *SOLDERING STUFF*
• Hakko FR-301 Desoldering Gun: amzn.to/4mqXMHD
or
• Desoldering Pump: amzn.to/41poGay
• Hakko Soldering Station FX888DX: amzn.to/45pIGLF
💁♂️TIP: Use 350°C & Leaded solder.
• Solder (Leaded Rosin Core 0.6mm): amzn.to/3DVnAro
• 2-spool Solder Holder: amzn.to/39hIMbt
• Hakko 599B Tip Cleaner: amzn.to/3RHy5o4
• MG Chemicals Flux (great plunger): amzn.to/3kuAcsZ
• Desoldering wick: amzn.to/46Hcaa1
• JB Weld epoxy (for PCB trace repair): amzn.to/44Y9JyG
• UV Solder Mask: amzn.to/3IYZHEP• 10W UV Flashlight (for curing solder mask): amzn.to/45z6fTq
• Silicone Finger Guards: amzn.to/3GX0Ps5
• HAKKO Fume Extractor (compact): amzn.to/3MApWyb
or
• Fume Extractor with flexible hose: amzn.to/3lkEnxK
🛒 *OTHER STUFF*
• ISO Alcohol 99%: amzn.to/47THAty
💁♂️IPA Note: 70% will work, 91% is better, but 99% is best for electronics cleaning (fast drying & no residue).
• Tweezer kit: amzn.to/3JTT4C1
• 10x & 15x Lens/Lamp: amzn.to/4tg88Nk
• Fluke 116 Multimeter: amzn.to/3O5IsQx
• EEVBlog 121GW Multimeter: bit.ly/40EOwWj
• ProbeMaster 8043SK Lead Kit: bit.ly/3GZhQ4W
• Silicone Tubing (OD:4mm, ID:0.8mm): aliexpress.com/item/1005001917803982.html
• UTi260B Thermal Camera w/Macro Lens: amzn.to/40Q5OkX
💵 Some links above lead to Amazon USA. If you click & purchase within 24 hours, Amazon may pay me a small commission on qualifying items in your Cart.
📚 *REFERENCE*
• TinkerDifferent Thread: bit.ly/3J06bU3
• Analog Board PARTS LIST: bit.ly/4lYHLc0
• Color Classic Troubleshooting: bit.ly/44TmTNo
💾 *SOFTWARE*
• Sleeper: macintoshgarden.org/apps/sleeper
🙇♂️ *THANKS* to YMK Devices for inspiring me to do this upgrade!
I also like his products, which you can check out here:• SD card SCSI drive: macsd.com
• 256MB RAM for SE/30: tindie.com/products/ymkdevices/synchr030s
🙏 *THANK YOU, Paypal Supporters!*
• Brian Gorham 🇺🇸 (🥇TOP repeat supporter)
• Mauro Acciaccaferri 🇮🇹 (monthly supporter)
• Mark B Newlon 🇺🇸 (monthly supporter)
• Gavin Maxwell 🇦🇺 (monthly supporter)
• Philippe Astier 🇫🇷 (repeat supporter)
• Garrett Bunge 🇺🇸 (new supporter)
💰*HOW TO SUPPORT THIS CHANNEL*
paypal.me/supportJDW
📺 *Please SUBSCRIBE:*
youtube.com/c/JDW11/?sub_confirmation=1
🎬 *MY VIDEOS*
youtube.com/user/JDW26/videos
#ColorClassic #AnalogBoard #Upgrade #JDW1
UPGRADE the hottest components on your Color Classic ANALOG BOARD for better cooling. And stay tuned for Part II, where I will convert my 68.4V VGA Mod to the 84V version for greater motherboard compatibility.
🎬Part 2 video: youtu.be/0PjAK8zTOTQ
🔎 *INDEX*
0:00 — Intro
1:43 — Removing the Rear Housing
3:02 — Thermal Measurements
9:56 — CRT Discharge & Disassembly
13:58 — Replacing Components
22:08 — Trace Repair
25:29 — Initial Testing
30:41 — Thermal Testing
35:42 — TinkerDifferent Discussion
37:09 — Closing Thoughts
🛒 *BUY THE COMPONENTS*
• Mouser Cart: bit.ly/4oaw9nU
or
• DigiKey Cart: digikey.com/short/d8m2zfdq
🤓 TIP! Want your replacement 18V Zener Diode at DL22 to run 20°C cooler? Check out my solution here (9/26/2025):
tinkerdifferent.com/threads/color-classic-analog-board-trouble.2367/page-5#post-40243
🛒 *FAMOUS UPGRADE BOOK FROM JAPAN*
• Doping Mac kick-started the CC mod scene in 1997 (written in Japanese): bit.ly/470U6rs
_(Limited Quantity: please buy it only if you will make good use of it.)_
🛒 *SOLDERING STUFF*
• Hakko FR-301 Desoldering Gun: amzn.to/4mqXMHD
or
• Desoldering Pump: amzn.to/41poGay
• Hakko Soldering Station FX888DX: amzn.to/45pIGLF
💁♂️TIP: Use 350°C & Leaded solder.
• Solder (Leaded Rosin Core 0.6mm): amzn.to/3DVnAro
• 2-spool Solder Holder: amzn.to/39hIMbt
• Hakko 599B Tip Cleaner: amzn.to/3RHy5o4
• MG Chemicals Flux (great plunger): amzn.to/3kuAcsZ
• Desoldering wick: amzn.to/46Hcaa1
• JB Weld epoxy (for PCB trace repair): amzn.to/44Y9JyG
• UV Solder Mask: amzn.to/3IYZHEP• 10W UV Flashlight (for curing solder mask): amzn.to/45z6fTq
• Silicone Finger Guards: amzn.to/3GX0Ps5
• HAKKO Fume Extractor (compact): amzn.to/3MApWyb
or
• Fume Extractor with flexible hose: amzn.to/3lkEnxK
🛒 *OTHER STUFF*
• ISO Alcohol 99%: amzn.to/47THAty
💁♂️IPA Note: 70% will work, 91% is better, but 99% is best for electronics cleaning (fast drying & no residue).
• Tweezer kit: amzn.to/3JTT4C1
• 10x & 15x Lens/Lamp: amzn.to/4tg88Nk
• Fluke 116 Multimeter: amzn.to/3O5IsQx
• EEVBlog 121GW Multimeter: bit.ly/40EOwWj
• ProbeMaster 8043SK Lead Kit: bit.ly/3GZhQ4W
• Silicone Tubing (OD:4mm, ID:0.8mm): aliexpress.com/item/1005001917803982.html
• UTi260B Thermal Camera w/Macro Lens: amzn.to/40Q5OkX
💵 Some links above lead to Amazon USA. If you click & purchase within 24 hours, Amazon may pay me a small commission on qualifying items in your Cart.
📚 *REFERENCE*
• TinkerDifferent Thread: bit.ly/3J06bU3
• Analog Board PARTS LIST: bit.ly/4lYHLc0
• Color Classic Troubleshooting: bit.ly/44TmTNo
💾 *SOFTWARE*
• Sleeper: macintoshgarden.org/apps/sleeper
🙇♂️ *THANKS* to YMK Devices for inspiring me to do this upgrade!
I also like his products, which you can check out here:• SD card SCSI drive: macsd.com
• 256MB RAM for SE/30: tindie.com/products/ymkdevices/synchr030s
🙏 *THANK YOU, Paypal Supporters!*
• Brian Gorham 🇺🇸 (🥇TOP repeat supporter)
• Mauro Acciaccaferri 🇮🇹 (monthly supporter)
• Mark B Newlon 🇺🇸 (monthly supporter)
• Gavin Maxwell 🇦🇺 (monthly supporter)
• Philippe Astier 🇫🇷 (repeat supporter)
• Garrett Bunge 🇺🇸 (new supporter)
💰*HOW TO SUPPORT THIS CHANNEL*
paypal.me/supportJDW
📺 *Please SUBSCRIBE:*
youtube.com/c/JDW11/?sub_confirmation=1
🎬 *MY VIDEOS*
youtube.com/user/JDW26/videos
#ColorClassic #AnalogBoard #Upgrade #JDW1
![Analog Board BEEFY COMPONENT UPGRADE for Color Classic & Mystic [Part 1 of 2]](https://i.ytimg.com/vi/D8AyC8d6u4o/mqdefault.jpg "Analog Board BEEFY COMPONENT UPGRADE for Color Classic & Mystic [Part 1 of 2]
UPGRADE the hottest components on your Color Classic ANALOG BOARD for better cooling. And stay tuned for Part II, where I will convert my 68.4V VGA Mod to the 84V version for greater motherboard compatibility.
🎬Part 2 video: https://youtu.be/0PjAK8zTOTQ
🔎 *INDEX*
0:00 — Intro
1:43 — Removing the Rear Housing
3:02 — Thermal Measurements
9:56 — CRT Discharge & Disassembly
13:58 — Replacing Components
22:08 — Trace Repair
25:29 — Initial Testing
30:41 — Thermal Testing
35:42 — TinkerDifferent Discussion
37:09 — Closing Thoughts
🛒 *BUY THE COMPONENTS*
• Mouser Cart: https://bit.ly/4oaw9nU
or
• DigiKey Cart: https://www.digikey.com/short/d8m2zfdq
🤓 TIP! Want your replacement 18V Zener Diode at DL22 to run 20°C cooler? Check out my solution here (9/26/2025):
https://tinkerdifferent.com/threads/color-classic-analog-board-trouble.2367/page-5#post-40243
🛒 *FAMOUS UPGRADE BOOK FROM JAPAN*
• Doping Mac kick-started the CC mod scene in 1997 (written in Japanese): https://bit.ly/470U6rs
_(Limited Quantity: please buy it only if you will make good use of it.)_
🛒 *SOLDERING STUFF*
• Hakko FR-301 Desoldering Gun: https://amzn.to/4mqXMHD
or
• Desoldering Pump: https://amzn.to/41poGay
• Hakko Soldering Station FX888DX: https://amzn.to/45pIGLF
💁♂️TIP: Use 350°C & Leaded solder.
• Solder (Leaded Rosin Core 0.6mm): https://amzn.to/3DVnAro
• 2-spool Solder Holder: https://amzn.to/39hIMbt
• Hakko 599B Tip Cleaner: https://amzn.to/3RHy5o4
• MG Chemicals Flux (great plunger): https://amzn.to/3kuAcsZ
• Desoldering wick: https://amzn.to/46Hcaa1
• JB Weld epoxy (for PCB trace repair): https://amzn.to/44Y9JyG
• UV Solder Mask: https://amzn.to/3IYZHEP• 10W UV Flashlight (for curing solder mask): https://amzn.to/45z6fTq
• Silicone Finger Guards: https://amzn.to/3GX0Ps5
• HAKKO Fume Extractor (compact): https://amzn.to/3MApWyb
or
• Fume Extractor with flexible hose: https://amzn.to/3lkEnxK
🛒 *OTHER STUFF*
• ISO Alcohol 99%: https://amzn.to/47THAty
💁♂️IPA Note: 70% will work, 91% is better, but 99% is best for electronics cleaning (fast drying & no residue).
• Tweezer kit: https://amzn.to/3JTT4C1
• 10x & 15x Lens/Lamp: https://amzn.to/4tg88Nk
• Fluke 116 Multimeter: https://amzn.to/3O5IsQx
• EEVBlog 121GW Multimeter: https://bit.ly/40EOwWj
• ProbeMaster 8043SK Lead Kit: https://bit.ly/3GZhQ4W
• Silicone Tubing (OD:4mm, ID:0.8mm): https://www.aliexpress.com/item/1005001917803982.html
• UTi260B Thermal Camera w/Macro Lens: https://amzn.to/40Q5OkX
💵 Some links above lead to Amazon USA. If you click & purchase within 24 hours, Amazon may pay me a small commission on qualifying items in your Cart.
📚 *REFERENCE*
• TinkerDifferent Thread: https://bit.ly/3J06bU3
• Analog Board PARTS LIST: https://bit.ly/4lYHLc0
• Color Classic Troubleshooting: https://bit.ly/44TmTNo
💾 *SOFTWARE*
• Sleeper: https://macintoshgarden.org/apps/sleeper
🙇♂️ *THANKS* to YMK Devices for inspiring me to do this upgrade!
I also like his products, which you can check out here:• SD card SCSI drive: https://macsd.com
• 256MB RAM for SE/30: https://www.tindie.com/products/ymkdevices/synchr030s/
🙏 *THANK YOU, Paypal Supporters!*
• Brian Gorham 🇺🇸 (🥇TOP repeat supporter)
• Mauro Acciaccaferri 🇮🇹 (monthly supporter)
• Mark B Newlon 🇺🇸 (monthly supporter)
• Gavin Maxwell 🇦🇺 (monthly supporter)
• Philippe Astier 🇫🇷 (repeat supporter)
• Garrett Bunge 🇺🇸 (new supporter)
💰*HOW TO SUPPORT THIS CHANNEL*
https://www.paypal.me/supportJDW
📺 *Please SUBSCRIBE:*
http://www.youtube.com/c/JDW11/?sub_confirmation=1
🎬 *MY VIDEOS*
https://www.youtube.com/user/JDW26/videos
#ColorClassic #AnalogBoard #Upgrade #JDW1")
![HP 50g Calculator Teardown & Repair [SD card]](https://i.ytimg.com/vi/ETqQP_uxS44/mqdefault.jpg "HP 50g Calculator Teardown & Repair [SD card]
How to take off the LCD cover and open an HP 50g to repair the SD card slot Lock Detector mechanism, then reassemble the housing.
INDEX
0:00 Problem Description
3:10 Removing the LCD Cover
5:05 Opening the calculator
16:35 Testing
25:26 Repair
27:22 Reassembly
35:13 Final Test
Buy HP 50g: https://amzn.to/2vH0TXU
💵 NOTE: Your price on Amazon (US only) is the same even if you dont click the amzn.to Affiliate link 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).
• HP Museum Forums: http://www.hpmuseum.org/forum/
• Discussion Thread on SD Cards: http://bit.ly/2bWb4eG
(Special thanks to Vtile and Claudio for your help!)
💰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
#calculator #HPprime #JDW")
![Spicy OClock: 68040 Macintosh Overclocking [2 of 2]](https://i.ytimg.com/vi/E_ZH8crtYU0/mqdefault.jpg "Spicy OClock: 68040 Macintosh Overclocking [2 of 2]
I reveal the Secret Sauce to high-speed 68040 CPU overclocks and test new (Mar. 22) low-latency 60ns VRAM. Heatsinking, CPU fans, and gaming speed comparisons at 40.7 & 50.1 MHz are also shown. (Part I video: https://youtu.be/JrmzIcdBNOY )
🔎 INDEX
0:00 — Intro
0:32 — Secret Sauce
8:48 — Heatsinking the CPU
10:52 — Fan Cooling the CPU
19:24 — Faster CPUs with FPU
20:51 — Even Faster VRAM & New Spicy Mount!
23:21 — High Overclock Testing (51.6MHz unstable)
27:34 — 50.1MHz (stable)
33:15 — After 4 Months of Testing
36:58 — 50.1MHz Game Testing
47:33 — 40.7MHz Game Testing
56:42 — Conclusion
59:59 — Family Medical Emergency Update
1:01:41 — Final Words & Thanks
🛒 BUY
• Spicy OClock: https://bit.ly/3rTXzTG
• New Mystic Back Panel & Spicy Mount: https://tinyurl.com/yv52bbuz
• OS-CON capacitor Links in text description under Recap video: https://youtu.be/IOX7wmnoy4U
• Serial Cable (to make loop-back plugs for Snooper2): https://amzn.to/3znGeXn
See my post on TinkerDifferent for details: https://tinyurl.com/26se46jw
• 60ns 512K VRAM (Kay Koba): https://tinyurl.com/42vzj5vj
• 60ns 512K VRAM (Silicon Insider): https://www.ebay.com/itm/116435221772
• 60ns 512K VRAM (Drake/BetterBit): https://bit.ly/3LTNoa3
• UT Source 68040 CPUs (faked-markings possible): https://www.utsource.net/itm/p/891703.html
• Noctua 40x10mm Fan: https://amzn.to/3tNXzWy
(NOTE! See 🔩 FAN MOUNTING SCREWS below.)
• 45x45x10mm Aluminum Heatsink 2-pack: https://amzn.to/3XO50vf
Also available in BLACK: https://amzn.to/3FDxOAn
And GOLD: https://amzn.to/43Pyixl
• Thermal Tape (25mm wide): https://amzn.to/3DPBvT3
-OR- instead of Thermal Tape, try this new Heatsink Clip with your favorite thermal paste:
• Heatsink Clip compatible with the above aluminum heatsinks: https://bit.ly/3KoojCS
• 64MB KEYSTRON RAM (for LC575/Mystic): https://www.ebay.com/itm/161121922148
• Torx T15 with LONG neck (to open Mac): https://amzn.to/2ScAskx
• Hakko Soldering Station (to install Spicy): https://amzn.to/4kEttgq
💁♂️TIP: Use 350°C & Leaded solder.
• Solder (Leaded Rosin Core 0.8mm): https://amzn.to/3GzJbVl
🔩 FAN MOUNTING SCREWS
• Machine screws (bolts): https://amzn.to/3ua5gWV
• Nuts: https://amzn.to/3QVB4s1
If either of the above go out of stock, here are the specs to find substitutes:
• Metric Size: M3-0.5 (M3=shaft diameter, 0.5=thread pitch, see below)
• Head Diameter: 5.3mm (much wider wont fit in the fan screw holes)
• Shaft Length (excluding head): 15mm
• Shaft Diameter: 3mm
• Thread Pitch: 0.5mm
• Type: Stainless Steel
💵 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.
💾 SOFTWARE
• My 1.4MB System 7.1 Boot Disk Image (for Mystic): https://bit.ly/3wVDmzM
• Clockometer 2.0.3 (DL#4): https://bit.ly/3uBMg4y
• Doom II: https://bit.ly/3tN708H
• Marathon: https://bit.ly/36UgyFM
• Dark Forces: https://bit.ly/3qLrNrb
• Wolfenstein 3D: https://bit.ly/3NGkCdV
• Duke Nukem Atomic: https://bit.ly/3NztnpS
• MacBench 3: https://bit.ly/35TNhdN
• Speedometer 4.02: https://bit.ly/34Snqmd
• Norton Utilities 3.5.3 (System Info): https://bit.ly/33oW5aS
• Photoshop 4.0: https://bit.ly/3tVPBdS
📚 REFERENCE
• CALCULATOR for Spicys Potentiometer Setting: https://stephen-arsenault.github.io
• Potentiometer is 10% tolerance: https://bit.ly/3qSgm0Z
• My Benchmark Results (updated): https://bit.ly/3qTVEh8
• Intro to Spicy OClock: https://amba.to/3H66PJ7
• Manual for Spicy: https://bit.ly/3GWCXyu
• Main IC on Spicy (LTC1799): https://bit.ly/42BHzXs
• Stephen Arsenaults Open Source VRAM design: https://bit.ly/3BlDSHC
• TinkerDifferent thread about remarked/fake CPUs: https://bit.ly/3JtOiIb
• 68040 Mask info (scroll to Masks section): https://bit.ly/3oehISp
• More 68040 Mask Info: https://bit.ly/3ottjNn
• Power Mystic video by @Action Retro: https://youtu.be/ApgiLPsyOVA
🙏 MY SINCERE THANKS to these recent Paypal contributors:
• Ken Colangelo
• Mauro Acciaccaferri (monthly supporter)
• Fred in Atlanta (double thanks for a double donation!)
• Connor from San Francisco (big thanks!)
• Eric Helgeson (BlueSCSI creator: https://bit.ly/3NvkayW )
💰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
🎶 All music in the ending segment from Duke Nukem Atomic. (Game link in SOFTWARE section above.)
#Macintosh #ColorClassic #Overclocking #JDW")
![Probe Master 8043SK Review [2023]](https://i.ytimg.com/vi/IvTr10HnOV0/mqdefault.jpg "Probe Master 8043SK Review [2023]
Premium MADE IN USA, gold-plated Probe Upgrade Kit for most any multimeter. Test leads are 18AWG with soft, burn-resistant silicone insulation. The sharp tips are great for testing, but keep them covered to injury.
🛒 BUY FROM PROBE MASTER
• 8043SK Kit: https://bit.ly/3ZaqPDp
• 8043S (smaller kit): https://bit.ly/406Fm41
• Tip Cover (recommended!): https://bit.ly/40vpV5t
• Leads only: https://bit.ly/3K22Y4u
• Aligator clips only: https://bit.ly/3JF1jA7
🛒 BUY FROM AMAZON
• 8043SK Kit: https://amzn.to/3TDzZa9
• 8043S (smaller kit): https://amzn.to/3lwOK1S
(Buying with these Amazon affiliate links supports this YouTube channel.)
🎥 121GW Multimeter Review: https://youtu.be/1iqURp-NsdM
💰HOW TO SUPPORT THIS CHANNEL
https://www.paypal.me/supportJDW
📺 Please SUBSCRIBE:
http://www.youtube.com/c/JDW11/?sub_confirmation=1
#ProbeMaster #ProbeKit #TestLeads #JDW1")
