Recent content by Boctor

  1. Boctor

    Oh, right, I saw yours while lurking the thread with the RPT60-A builds! If I had access to more...

    Oh, right, I saw yours while lurking the thread with the RPT60-A builds! If I had access to more than basic soldering/crimping tools, that'd probably be a much nicer way to go about it, especially since then you don't have to run jump wires for the two chassis/safety grounds.
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  2. Boctor

    Yes, it's just the top pressing down on it. Maybe the 3D bracket is too thick? I got it from a...

    Yes, it's just the top pressing down on it. Maybe the 3D bracket is too thick? I got it from a local place, it's the STL from Retro Frog on Printables (site). I wonder if I'd have better luck tapping right into the bottom of the chassis like you did.
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  3. Boctor

    Mine is the Dyna Comp one, so I'm using the 3D printed bracket that sits inside, and the fit is...

    Mine is the Dyna Comp one, so I'm using the 3D printed bracket that sits inside, and the fit is extremely tight. The two heatsinks, according to the RPT-60 datasheet, should never have continuity, and that was actually how I blew one of the safety fuses when I first tried running it with the lid...
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  4. Boctor

    The Meanwell RPT-60A is just too tall to be a safe fit in the LC 475 power supply's chassis...

    The Meanwell RPT-60A is just too tall to be a safe fit in the LC 475 power supply's chassis... The two heatsinks touch the top housing's edges even if you try to insulate them by brute force, and I'm afraid if I leave the top off instead, it's just going to short against the case's RF shield.
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  5. Boctor

    LC reboots when a floppy disk is inserted

    It could always be the lighting in the photos themselves, but those joints look too green and dull for this to have ever been recapped or washed.
  6. Boctor

    LCIII EPROM?

    This research (authored by a user here!) helped me figure out which ROMs were compatible with my IIcx and IIci, and gave enough introductory info to help me replace my failed mask ROMs with cheaper flash ones... After a bit more help from other users here, who alerted me to the obvious but...
  7. Boctor

    Which LC/Performa to buy?

    About the plastics, one of the great things with pizza box LCs is that cases and parts machines are not only easier to find than other Macs, but that the LC, II, III, and 475 all use the same footprints, with the main difference being the possible floppy drives. Luckily those are transparent to...
  8. Boctor

    Steve and the laws of physics.. tales from Bandley 3

    This is great, not just the characteristic Jobs response but the thought of a professional designer seeing something that's already sound from an engineering/physics perspective and not wanting to upset the balance. I'm hoping at least one person out there has an account of the time Steve...
  9. Boctor

    SE/30 recap - capacitor pads lifting, looking for advice

    Well said about the actual rotation distance, that's an important clarification I never mention. You'd want to fatigue the legs and nothing else. They usually break farther up, with the force concentrating at a thin/weak area that's not right on the pad.
  10. Boctor

    SE/30 recap - capacitor pads lifting, looking for advice

    So in theory, all we'd have to do for it to be considered sane in general is to twist SMT electrolytics off of all kinds of PCBs?
  11. Boctor

    Recapped IIci intermittent clock counting

    I took a second look at my IIci, as I've never had to touch the RTC in it yet. It's not only a different pinout from the previous-gen 8-pin one, but a different package entirely. I might have to probe mine now for better reference, since I was looking at a IIcx where the clock circuit had...
  12. Boctor

    Recapped IIci intermittent clock counting

    AFAIK, whichever crystal is the 32,768hz one, in proximity of the RTC, is its clock source. If it's anything like the SE/30 and IIcx (I think the logic is almost identical but the pinout differs?) then the 1hz source, an interrupt, starts from a leg of that 8-pin RTC. It is completely possible...
  13. Boctor

    SE/30 recap - capacitor pads lifting, looking for advice

    Have lifted no pads with the pure axial/twist method, even on the worst boards I've had. Gentle heating and attempting to walk off a capacitor has managed to do it, though. With a more precise preheater and hot air nozzle it should still be possible, but the flush cutters still sound the most...
  14. Boctor

    Baby's first PCB

    You just have to adapt a 6800 to the 68000's bus to make it true. Or find the Jef Raskin era, 6809-based proto-Mac that lives in an Apple II.
  15. Boctor

    The 7500 is my nemesis, because of having a 7200... How I envy that slotted CPU!

    The 7500 is my nemesis, because of having a 7200... How I envy that slotted CPU!
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