VGA mod for the Macintosh Color Classic (640×480)
I examine 3 ways to get 640×480 on the Color Classic, then implement the VGA Mod. Before/After screens shown. VGA lets you to use software that won’t work on 512×384.
🙏 HUMBLE THANKS to Kay Koba (Kero’s Mac Mods) whose advice I cherish. Kay’s Blog articles: https://ameblo.jp/keroxiee1016/entrylist.html
📺 My CC CRT Adjustments Video: https://youtu.be/PUVkIPpuMQ4
🔎 INDEX
0:00 — Intro
0:24 — Doping Mac
2:00 — 3 Hardware Mods
3:57 — [Method #1] 13″ Hi-Rez Mod
5:31 — [Method #2] Apple Prototype
6:55 — [Method #3] VGA Mod
8:15 — Disassembly & Installation
22:36 — With ONLY Line Sense changed…
23:29 — Horizontal Deflection Voltage change
26:39 — Reassembly
33:45 — After Video Adjustments
35:26 — Testing
43:15 — Closing Thoughts
🛒 THINGS TO BUY:
• Doping Mac: https://bit.ly/34nXjD9
• Torx T15 with LONG neck (to open Mac): https://amzn.to/2ScAskx
• Bulldog Clip (helpful to pry off back case): https://amzn.to/2H7lIhF
• 5x/11x Magnifier: https://amzn.to/3lGogXI
• Hakko Soldering Station: https://amzn.to/3ArxBJ6
💁♂️TIP: Use 350°C & Leaded solder.
• Solder (Leaded Rosin Core 0.8mm): https://amzn.to/3GzJbVl
• MG Chemicals Flux: https://amzn.to/3kuAcsZ
• Desoldering wick: https://amzn.to/3iMAnA5
• 99.9% ISO Alcohol (Spray Bottle!): https://amzn.to/3HHWi8lor
• UV Solder Mask (Green): https://amzn.to/3hogoaE
• 10W UV Flashlight (for curing): https://amzn.to/3DLbizS
• Anti-static pad with Wrist Strap (16×24″ / 41x61cm): https://amzn.to/3bfAE9Z
• Wall socket Ground adapter for banana-jack Wrist Strap: https://amzn.to/2Yvq5ge
• Flat-head (–) Screwdriver (for CRT discharging)
• Wire with alligator clips at both ends (for CRT discharging)
• X-Acto razor blade box cutter knife (or Dremel)
💵 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 click & purchase within 24 hours, Amazon may pay me a small commission on qualifying items in your Cart.
🛒 CAPACITORS for Analog Board:
• Console5 Kit: https://bit.ly/3L8Im9h
• Capacitor List: https://bit.ly/3uaaqms
• Bruce Rayne’s board overview: https://recapamac.com.au/macintosh-cc-analog/
⚠️ I have not recapped one yet (mine is recapped), so please consider Console5 and their capacitor list.
📚 REFERENCE
• Apple Service Source on Color Classic: https://bit.ly/3AHwBle
• Apple Tech Note on SENSE LINES: https://bit.ly/3gcFeus
• See table lower on this page showing Sense line & ID info: https://bit.ly/3rdS8yR (12″ Mode = 512×384)
• MicroMac performed Method #1 (13″ Hi-rez Mod) in the past: https://bit.ly/35vIu1X
• Method #2 (« Option 2 ») & Method #3 (« Option 1″) are on PowerCC: https://bit.ly/3s6HatZ
• Method #2 discussion on the 68kMLA (TechKnight): https://bit.ly/3g9ypKb
• New York Times article about CC enthusiasts: https://nyti.ms/3Kg6E0f
• 今井隆 Imai, Takashi created the VGA Mod (Method #3) & High Resolution 13 » Mod (Method #1).
• 秋月誠 Akizuki, Makoto created the Takky PPC Mod with Mr. Imai.
• Recent photo of Mr. Akizuki (age 60?): https://bit.ly/34nYzXa
• Color Classic FAQ: http://www.colourclassicfaq.com
• PPI Calculator: https://bit.ly/3obY2yw
🤓 NOT MENTIONED IN MY VIDEO
• You must adjust the CC CRT when switching between 640×480 & 800×600 because it’s not Multi-sync.
• There is no « motherboard mod » to get 640×480. You can change Line Sense on the motherboard or ribbon cable but not Horizontal Deflection Voltage. That’s why we make Line Sense & Deflection Voltage changes on the Analog Board.
• The logic board « resistor mod » mentioned at « powercc » is only used to get the LC550 or LC575 motherboards to work with the stock CC resolution of 512×384 instead of a software solution: https://powercc.org/mystic/
• Like 512×384? A software solution may be best. After doing the Mystic upgrade, I used a ResEdit-hacked System Enabler 065 v1.1 in System 7.1 to get it to work at 512×384: https://bit.ly/3HhyPtU
• System files in 7.5.x, 7.6.x & OS 8.x require ResEdit hacks for the LC575 Mystic motherboard to work at 512×384 (not needed if you do a 640×480 VGA hardware upgrade as shown in my video): https://bit.ly/3AMcTVB
• Stronger Analog Board possible? Yes! The LC575 Analog Board can be cut to fit inside a CC. It’s more robust & durable than the stock CC board. METHOD #1 or METHOD #3 (described in my video) can be used with the LC575 Analog board. But it’s a lot of work! Kay Koba’s Blog provides details, and note the Flyback transformer from CC Analog board is also required: https://amba.to/3obq7G4
Tyler Smith shows that same mod here: https://bit.ly/3HhIosK
💾 SOFTWARE
• Photoshop 4.0: https://bit.ly/3INa752
• Dark Forces: https://bit.ly/32JtBIo
• Marathon: https://bit.ly/3ubZiFD
• MS Encarta ’96: https://bit.ly/3rbxkIg
💰SUPPORT THIS CHANNEL
https://www.paypal.me/supportJDW
🙏 SINCERE THANKS to the these recent Paypal donors:
• Anonymous (12/30/2021)
• Mauro Acciaccaferri (monthly supporter)
• Eric Helgeson
• Jason Heiser
• Frank Wiesner
#Macintosh #ColorClassic #VGAmod #JDW
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