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Ken Newman

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  1. Thanks for asking! yes, it does the same thing whether the eject mechanism is installed or not. I have recently determined that the issue was with the type of CABLE being used to connect the drive to the computer! I had been using a yellow stripe cable, because that’s what I heard was correct for all 800k drives, but I apparently missed the part about what color the writing is on the drive’s label! Turns out that if it’s a certain color (sorry I can’t remember if it’s red or black right now), the correct cable to use is the one with the RED stripe, even though that
  2. I think that is correct with SOME external floppy drives....in particular model A9M0106 with ridges on the case, while the other model, the one WITHOUT ridges on the case, model AM0103, simply has the drive cable connected directly to the drive.
  3. I've just been made aware of a very interesting web page: https://www.retrotechnology.com/herbs_stuff/m_parts.html#800K that details some of the differences that I've been noticing. Apparently some of my drives have black text on their labels while others have red text on their labels, and this makes a big difference! Now, if I can just get it all sorted out so that all drives work all the time, that will be wonderful!
  4. Anyone know about Sony 800k floppy drives? I've been learning a lot about them lately as I attempt to get a couple of MacPlus computers ready to sell. I watched a few YouTube videos (especially those from @JDW, which are pretty amazing!), and learned a LOT about what I need to do with these drives to get them working again. I thought I had it all figured out, what with disassembling the drives and lubricating them, replacing that one gear in the eject mechanism and so forth. But a few of the drives just simply would not read. That is, the head assembly stayed at the zero point even wit
  5. I'm sorry but I do not think I will be selling the analog board on which the sound doesn't work, because believe it or not, once I moved the speaker to the other analog board, it now appears to work just fine. Also, I'm thinking about re-capping the analog board so that when I sell it, hopefully I can sell it for more than if I do not re-cap it. Thanks!
  6. Hello I have a bunch of Sony MFD-51W 800k floppy drives that I'd like to put back into my Mac Plus computers so that I can sell them. Fortunately, I was able to get all their eject mechanisms working properly, thanks to James Wages' terrific instructions! But many of the drives have the same issue: Their heads do not move from the zero position to attempt to read the disk. I have only one drive connected to the computer at a time. If a drive works, the computer boots just fine and everything is great! But these drives in which the heads don't move from
  7. Well despite the fact that I tested the speaker using an ohmmeter (tapping the test leads on the speaker terminals produced crackling from the speaker and by that method it tested "good"), the culprit turned out to be the speaker itself. Swapped it out with one from another analog board, and now it's good to go!! Crazy! Now if I could just get all my 800k floppy drives to work, that would be amazing!!
  8. Ahhhhhh! Thanks ever so much for taking the time and thinking about it more! I'm sorry, I should’ve mentioned that the issue exists no matter which logic board I put in the computer...so I think it’s safe to say that it’s not related to the logic board. Also, fwiw, I traded out the analog to logic board wiring harness, and the issue persists. I think your first suggestion of checking all joints on the analog board is where I’m headed, at least to start, anyway.
  9. Thanks! I’ll definitely check that out! I think I already re-flowed all the joints of that connector, but I’ll double-check!
  10. I have a few Mac Plus computers that I'm getting ready to sell. One of them doesn't make any sounds out of the speaker, but sound does come out of the headphone/external speaker connector. Just wondering if anyone knows the usual reason for this failure? I've tested the speaker with an ohmmeter and it checks out okay, so I'm figuring that it's NOT a case of a bad speaker. And as I said above, sound DOES come out of the headphone connector, just not out of the speaker. Volume level in the control panel is indeed turned up to 3 or 4. Thanks!
  11. Someone asked why MacColby would make such a computer? Well, having traded in my Mac512 for a MacColby in 1985 or so, I can tell you that the MacColby was a HUGE improvement over the original Mac in terms of portability! Not only was pretty much everything inside the case, but the keyboard clipped onto the front of it, and the handle made it very easy to pick up! I think I gave them my Mac 512 plus about $1000 to get the MacColby, and I had it until it was stolen from the luggage bay of the bus we were traveling on from Atlantic City to Washington DC, while I was working on the Paul Anka
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