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@jibsaramnim I measured the Current Consumption of the LC575 motherboard to the PRAM battery to be 63µA @4.5V. Just FYI. Also, I would say it's a "related deviation" rather "off-topic." :) @Marconelly mentions having an LC575 board in his CC, and because those boards all have PRAM batteries...

Because we are talking about 17.2MHz and lower XTALs, having a 100MHz scope is important because you want 5x the XTAL frequency on your scope where possible. And because the XTALs we're talking about are full-sized CANs (not the 2-pin kind), they are active and therefore can be tested rather...

I currently use a triple LR44 solution in my Color Classic Mystic (using a cheap battery holder sold on Amazon). That lasts 75 days when unplugged from the wall or with the power switch at back turned off. The stock battery would have lasted much longer, possible 2-3 years, similar to how long...

I added IconBounce to Macintosh Garden here just now with credit to @slomacuser & @David Cook : https://macintoshgarden.org/apps/iconbounce It's on a bootable MFS 400K *.dsk image, with System 3.2. I confirmed it working in the 128K, 512Ke & MacPlus editions of Mini vMac.

I honestly don't know what the world would do without its geniuses. Bless you, David Cook!

I really hate fiddling with batteries and PRAM, to be honest. Back in the day, prior to the internet, having the machine auto-connect and set the date and time wasn't possible. I get that. But having the mouse default to a super slow setting? Having the CRT of the CC default to a super dim...

Wonderful to hear you have it! Thanks for making an attempt to upload it. Unfortunately, I spent about a half hour in vain on your file. Stuffit Expander 5.5 under System 7.5.5 won't expand it. And Disk Doubler Pro 4.1 throws an error when using the "DD Expand" app on it... My modern...

@jibsaramnim In the USA, "Energy Star" came on the scene in 1992, and although the CC was released in '93. In those days, "low power" isn't what we consider "low" today. Most electronics draw some power when plugged into the wall, AC Adapters being the gizmos we most often forget about...

Fascinating. That is very useful info for Color Classic owners experiencing low voltage issues. Note that modern electrolytic capacitors tend to be physically smaller than those from the 80's and 90's, even though you have the same capacitance and voltage specifications. However, going higher...

Thank you for confirming that UV LEDs used indoors will work because my success outdoors in sunlight (no clouds) wasn't good, in large part because it rains a lot here in Japan and there is no way I could leave electronics outside for a month, let alone 2 weeks. I was only able to try it for a...

Last night, I was reading a book named "Programmers at Work: Interviews With 19 Programmers Who Shaped the Computer Industry" by Susan Lammers (1986). It contains an interview with Andy Hertzfeld. What Andy wrote about Bill Atkinson and the LISA was quite interesting, so I will share that part...

Kai, I suspect you might be thinking ill of my previous remarks, but I certainly had nothing derogatory in mind. I work with "color" on a near daily basis at work. I'm pretty meticulous about identifying even the smallest differences. If you scroll up an examine his original photo of the...

If you have experience buying on AliExpress, then you need no advice from me. But if you don't have much experience, then I will merely suggest that you seek out the most reputable seller you can find. (Even then, it's somewhat hit or miss.) I tend to look for items on want to buy there and...

It is indeed quite close... Your machine is a tiny shade lighter. Has it been Retrobrighted?

No, I had not done that because I am a terribly naughty boy. 😅 But now that I have done that, thanks to your kind advice, it's working on my M1 Max 16" MBP!

Completely forgot about this thread until today, sorry. I just downloaded CP2Mac107.zip, decompressed it, then tried to launch the app on my M1 Max 16" MBP running macOS Sequoia 15.5. It won't launch. Not surprised at all because it's WINE-based. If anything, I was trying to figure out how...

Note sure how "repairable" the IIe Card is, but mine had leaky caps and I cleaned and swapped them out and had no issues, but mine wasn't damaged like yours. No broken traces or eaten through feet on mine at all. Screen capture from my IIe Card video shows the larger XTAL (full-sized can) to...

With its 040 processor and design differences, the 575 board will draw more current than the stock motherboard. So if you have power supply issues resulting in low voltage, it would make logical sense that the stock board may work while the 575 wouldn't.

I myself have not encountered any "decaying LEDs" in optocouplers I've used in terms of them no longer working. However, because they are light-based, they do require a fair amount of current — almost always at least 5mA. The lower the current fed into them, the lower the brightness of that...

Oh my! The holy grail of Mystic BACK PANELS! Wow. To help spread the word, I added a pinned comment under my FlippyFloppy video that links to this thread. I also added a link in the REFERENCE section of my LC575 Back Panel Conversion video too. I really love you have so much usefulness in...