Macintosh SE/30 New Power Supply (PSU): SEASONIC @JDW-
Macintosh SE/30 New Power Supply (PSU): SEASONIC  @JDW-
Uploaded November 2018 | Updated September 2026, 2 weeks ago
This 4K video shows how to replace the power supply in a Macintosh SE or SE/30 with a more powerful Seasonic. Voltage measurements shown before/after PSU replacement and after analog board is recapped and an accelerator and Ethernet card are installed. (To watch this video in 4K you'll need to use FireFox or Chrome since Safari only shows up to 1080p.)

INDEX
0:00 Intro
0:45 Problem Explanation
1:40 Opening the Case
3:01 Power Supply Removal
6:44 How I chose the Seasonic PSU
12:11 Wiring Prep
19:40 Voltages (No Load)
21:23 Mounting
26:15 Testing the Mac
31:52 Voltage Measurements
38:06 Games
41:43 Closing Thoughts

🛒 THINGS TO BUY:
• Seasonic PSU (Amazon US): amzn.to/4d4hMur
• Torx T15 with LONG neck (Amazon US): amzn.to/3XFKPjB
• Analog Board FAN (very quiet & moves more air than Silenx): Noctua NF-A6x25 PWM 12V 60x25mm (Amazon US): amzn.to/2S8boMv
• ARTMIX Stratos TwinSpark PDS Adapter for SE/30 (to add a PDS Ethernet card and a compatible PDS accelerator card in an SE/30, for example): bit.ly/2E07MGO
• Mac-O-Meter (checks voltages): ko-fi.com/s/5593914468

💵 NOTE: Your price on Amazon (US only) is the same even if you don't 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).

SOFTWARE:
💾 Dark Castle (game shown in my video): bit.ly/2PYXI7e
💾 Crystal Quest (another game shown): bit.ly/2QienC9
💾 FloppyEMU: bit.ly/2BA8yru

📚 RESOURCES:
📌 Pinout of SEASONIC Black Connector: tinyurl.com/2hdrvzct
📌 Pinout-chart of External Floppy Drive Connector: tinyurl.com/4yjt3s7a
📸 MY SEASONIC photos: bit.ly/2Q9fSDu
⚡Discharging the CRT: youtu.be/_AvndWq_MSA?si=3fQ7eWA_4IqFDLrm&t=595
🗣️ My PSU Forum Posts: tinyurl.com/3btcfb6s

👍 Special thanks to Joethezombie at the 68kMLA, along with Superjer2000 and Von. Their excellently documented experiences with the SEASONIC prodded me to do my own.

🎥 My video about recapping the Micromac DiiMO PDS accelerator card is here: youtu.be/BWesQglkZPw
🎥 My video about recapping SONY Power Supplies is here: youtu.be/nSZ8QsNUxDM
🎥 My video about recapping the Analog Board is here: youtu.be/zr_Q4bGI_qY

💰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

#Macintosh #PowerSupply #JDW
Macintosh SE/30 New Power Supply (PSU): SEASONICMacColby Assembly Instructions [Vintage Video]2009-2011 iMac Video Card Bake FAQ & 6970M UpdateGIVEAWAY! 🎁 Mac SE Reloaded KITApple IIe Card in Color Classic MYSTIC [Part 1]Gear FIX & Molykote LUBE of Apple 1.44MB Floppy Drive [MP-F75W-02G, SuperDrive]A Very Special Macintosh PortableMacintosh SE Reloaded TESTING [Part 4]Book Restoration of 15-year-old Ryrie Study BibleZEN Movie, by Michael Green [1986]FCPX: HLG with Proxies Bug & WorkaroundMaclock & Pico Mac Nano REVIEW
JDW |

Macintosh SE/30 New Power Supply (PSU): SEASONIC

SHARE TO X SHARE TO REDDIT SHARE TO FACEBOOK WALLPAPER