David Cook's latest activity
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David Cook replied to the thread Fixing a Macintosh Portable - What worked for me.Here is a better look at the Portable battery input connector (J17) on the motherboard. Like other power connectors (such as on the... -
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David Cook replied to the thread BlueSCSI on Macintosh Portable.Also, is this needed for both the backlit and non-backlit?
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David Cook replied to the thread BlueSCSI on Macintosh Portable.Really? I could just throw the tst instruction into the Quiet Portable init if that's all it is. So, does that completely eliminate the...
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David Cook replied to the thread Flaccid Ostrich - Floppy Emu compatible clone.Given the difficulty of finding non-surface-mount parts, I got the impression this was just a hobbyist exercise, rather than commercial...
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The Macintosh II computer motherboard revision 820-0228-A is the most common. Unfortunately, it is the most corroded due to using many...
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David Cook replied to the thread Fixing a Macintosh Portable - What worked for me.I regret reusing an old hard drive cable for this photo -- as the color of the wires is confusing when used on a Portable. Give me a...
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David Cook replied to the thread Fixing a Macintosh Portable - What worked for me.I am so glad you said that, because that's what I had to do to get the Portable to not crash when playing sounds. I was embarrassed to...
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David Cook replied to the thread Macintosh LCII failure.Do you have an oscilloscope? I would measure this point in the circuit and see if the amplitude declines. You might be able to catch...
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David Cook replied to the thread Macintosh LCII failure.If you want to further narrow down the location of the sound issues, put some headphones on or use an external speaker. If the problem...
