Mark_W's latest activity
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MMark_W replied to the thread How to build the ultimate BlueSCSI Compact Mac images - complete with games and apps?.Regarding other common file types: .bin: macbinary encoded file, just use stuffit expander to extract it .hqx: hexa- or octal-encoded...
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MMark_W replied to the thread How to build the ultimate BlueSCSI Compact Mac images - complete with games and apps?.I use minivmac if the source file is a floppy image. It emulates a black and white 68k mac (plus iirc) so not the fastest emulator to...
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MMark_W replied to the thread Color Classic Analog Board Trouble.Finally sorted everything out! This analog board really fought me till the very end. Long story short, after replacing all zener...
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MMark_W replied to the thread Color Classic Analog Board Trouble.Been working on this color classic on and off for a few days now, also spent some time reverse engineering the analog board, here are my...
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MMark_W replied to the thread Color Classic Analog Board Trouble.Ok it might seem ridiculous but I got it working! Bypassed the power supply section (desoldered transformer and switching mosfet) and...
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MMark_W replied to the thread Color Classic Analog Board Trouble.Spent some time working on it this morning and noticed voltage on pin 6 drops to ~4v immediately after the power supply tries to start...
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MHello, I've been working on a color classics for a few nights now. Managed to fix the logic board after a recap, several trace repairs...
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MMark_W replied to the thread (2) Macintosh SE/30's - Full Restoration.Btw this should be the correct position for t2 marker, to measure the end time of a complete cycle: Assume 50% duty cycle, the...
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MMark_W replied to the thread (2) Macintosh SE/30's - Full Restoration.Grabbed my friend's se30 and removed rom, here's the result: Early revision with socketed cpu and pals. A2 is also 1.3mhz. And I...
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MMark_W replied to the thread (2) Macintosh SE/30's - Full Restoration.I took another look at the repair guide: And on page 46 the scope shows square wave with 50% duty cycle, and its measurement is indeed...
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MMark_W replied to the thread (2) Macintosh SE/30's - Full Restoration.I opened my se30 again tonight as I noticed some of the smd 74hc logic ic legs are still a bit tarnished and reflowed all of them. While...
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