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    SE/30 floppy drive keeps spinning and ejecting simultaneously on boot

    I've been fixing up an SE/30 and got to the point of repairing the floppy drive. Having replaced the eject gear and lubricated the mechanism, I now find that, from the moment I turn the power on, the drive motors spins up without ceasing while the eject mechanism repeats endlessly - until I turn...
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    M5126 Macintosh Portable Sad Mac (0x14/0xCD36)

    I'm trying to rescue an M5126 portable which formerly wouldn't start up at all - and so the first thing I did was recap. I've tried to avoid reassembling in full until I'm sure things are working, so I've carefully reconnected (with layers of insulation!) the battery holder on top of the PCB...
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    SCSI termination and internal/external drives

    If I have an SE/30 with an internal SCSI drive, then the drive should have termination enabled. However, if I then add an external drive - do I have to disable the internal drive's termination and add it externally (replacing it with a terminator when the external drive is not connected), or...
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    Macintosh Portable Memory Expansion

    I have a Mac Portable M5120 with 2MB RAM, and I'm curious to know what options there are for RAM expansion at this point. MacEffects used to sell an 8MB card (which I believe Techknight designed?) which is now out of stock, but I also think there may have been schematics on this site before the...
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    SE/30 won't format floppies

    I have an SE30 that I'm resurrecting, but it won't format floppy disks successfully - the format goes through, but verification fails more or less immediately. However, I have another SE/30 MLB - and if I swap it in, the floppy formats fine every time. I've replaced RP10 with no change - am I...
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    Installing 8x OWC 16MB SIMMs in SE/30

    I have 8 x 16MB OWC 30-pin SIMMS I'd like to use with my SE/30. Unfortunately, even though they're lower in height than the ROM SIMM it came with, I find that the last SIMM snags consistently on the metal lip of the cage above it as I insert the motherboard and comes loose. Questions: - Is...
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    Platinum color restoration

    So (and I apologize - this isn't strictly a Compact Mac question, but I figured the colors were shared): I have an Apple 5.25" drive in Platinum, and it's been extremely aged and yellowed by the sun. I figure I have three options to restore the color: - Retrobrite. This has mainly worked for...
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    SE/30 Power Supply Limit

    So I have a: - SE/30 with a recapped power supply - Set of Bolle's boards, including the Turbo 040 and combined network card / IICI slot adapter - Radius Two Page Display card I'm not... totally convinced that the Two Page Display card is a worthwhile addition to this combo, but was amused to...
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    SE/30 boots with no display

    After resolving the power supply issue with a bad switch (https://68kmla.org/bb/index.php?threads/dead-se-30-power-supply-no-fan-no-voltages-at-floppy-connector.39895/#post-430859), I then booted the Mac to be greeted by a working fan and... a continual but quiet ticking sound with no chime and...
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    Dead SE/30 Power Supply (no fan, no voltages at floppy connector)

    I grabbed an SE/30 from Craigslist tonight which was sold as dead. Returning home, I found a couple of things: - The motherboard was actually in good shape, with no obvious major battery or capacitor leakage. That said, one of the vias by the battery (just one!) was green and corroded, although...
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    Socketing the CPU in an SE/30

    I have an SE/30 with a soldered CPU, and found a Daystar Digital 40Mhz accelerator - which obviously needs a socket! I'm comfortable with re-working PCBs, and have a desoldering gun that should make short work of removing the existing 68030 from the board - along with a new Mill-Max socket...
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    Non-leaky Mac Plus and SE/30 battery options

    So I dug out a Mac Plus and SE/30 that had been sat in storage for a while, and apart from a failing hard drive in the SE/30 they booted fine - while, more importantly, there was no evidence of battery leakage (that said, the SMT caps were leaking and needed a cleanup - I'll get around to...
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