![HP 50g Calculator Teardown & Repair [SD card] @JDW-](https://i.ytimg.com/vi/ETqQP_uxS44/maxresdefault.jpg)
Uploaded September 2016 | Updated September 2026, 2 weeks ago
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: amzn.to/2vH0TXU
💵 NOTE: Your price on Amazon (US only) is the same even if you don't 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: hpmuseum.org/forum
• Discussion Thread on SD Cards: 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: paypal.me/supportJDW
📺 Please SUBSCRIBE:
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#calculator #HPprime #JDW
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: amzn.to/2vH0TXU
💵 NOTE: Your price on Amazon (US only) is the same even if you don't 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: hpmuseum.org/forum
• Discussion Thread on SD Cards: 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: paypal.me/supportJDW
📺 Please SUBSCRIBE:
youtube.com/c/JDW11/?sub_confirmation=1
#calculator #HPprime #JDW
![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")
![Abe Masks from Japan [アベノマスク]](https://i.ytimg.com/vi/JbBTnW2IUPM/mqdefault.jpg "Abe Masks from Japan [アベノマスク]
I have some fun showing off my Abe Masks and other washable and disposable masks we use here in Japan. I also share a little about the state of the lockdown in Japan.
💰SUPPORT THIS CHANNEL
https://www.paypal.me/supportJDW
📺 SUBSCRIBE:
http://www.youtube.com/c/JDW11/?sub_confirmation=1
🎬 MY VIDEOS
https://www.youtube.com/user/JDW26/videos
#facemask #Japan #アベノマスク #JDW")
