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  1. Thread: Ebay 'offer'

    by SomeGuy
    Replies
    15
    Views
    306

    I'm a little confused. I've heard of the second...

    I'm a little confused. I've heard of the second chance thing for the SAME item when a high bidder flakes out. But this is for a different, but "identical" item?
  2. Replies
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    198

    If your power is good, and the bearings don't...

    If your power is good, and the bearings don't sound bad, I'd suspect something in the motor control circuitry, or the sensor that reads the index pulse. But when it has such control, a drive's...
  3. Replies
    13
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    198

    First try it with a different power supply. It...

    First try it with a different power supply. It may be that your system's power supply is getting weak.

    If it still does that with a different power supply, then at least it is probably something...
  4. Replies
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    82

    That looks like a very generic XT clone. Same...

    That looks like a very generic XT clone. Same style as Taiwanese "ERSO" clones.

    4.77mhz boards usually only have one crystal. Usually a 14.318.

    I'm curious, approximately what year this board...
  5. I think the idea was just to turn the yoke to see...

    I think the idea was just to turn the yoke to see if the same pattern persists, but rotated. Although I am sure it would.

    No H/V plug swapping.
  6. Thread: Omg

    by SomeGuy
    Replies
    2
    Views
    186

    Ouch. Doesn't look melted. Give it a disassembly...

    Ouch. Doesn't look melted. Give it a disassembly and a bath and it might clean up OK. But wow, what happened to it? They tried to barbecue it? They don't say.

    I've have equipment that had been...
  7. Replies
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    93

    If it were me, I'd first try to find something...

    If it were me, I'd first try to find something that it is doing that makes it more likely to reboot. Diagnostics usually only test one thing at a time. Perhaps there is some program that chunks the...
  8. The a2m2010 is a 12" CRT, and the A2M4090 is a...

    The a2m2010 is a 12" CRT, and the A2M4090 is a 9", so no. A replacement yoke would at least have to be from the same size CRT. The early Macs used a similar 9" CRT, I wonder if they used the same...
  9. Well, the fact that you have some deflection...

    Well, the fact that you have some deflection suggests there is current going through it. A short between winding levels (I'd guess the vertical deflection) might cause insufficient deflection and a...
  10. That is bizarre. The only thing I can think of...

    That is bizarre. The only thing I can think of that would cause that, since the board is tested OK, is a partial short in the yoke. The yokes are the same model, right?

    Adjustment magnets would...
  11. It does sounds like some kind of very...

    It does sounds like some kind of very intermittent hardware failure, but it could be a lot of different things. You would have to narrow the issue down quite a bit.

    Since it happens while copying...
  12. Replies
    10
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    241

    My first thought is that the controllers are...

    My first thought is that the controllers are reporting different CHS values. If you can boot from a floppy while the drive is attached, try seeing what the BIOS is reporting (I'd probably use Norton...
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    12,583

    Keep in mind that while us nerds see a pile of...

    Keep in mind that while us nerds see a pile of geek toys, that the family may be dealing with things magnitudes larger.

    I won't speculate on their situation.

    Early last year, an older...
  14. Diags foir IBM PC vs IBM PC Advanced Diag

    What is the difference between the "Diagnostics for IBM Personal Computer" and "IBM Personal Computer Advanced Diagnostics" software disks?

    I mean, it obviously tests a few more things. (It's...
  15. Thread: IBM 5150 Date?

    by SomeGuy
    Replies
    67
    Views
    5,061

    Where did you get this? Knowing the history...

    Where did you get this? Knowing the history behind this unit would be valuable.

    Yea, something this early might be better off left as-is for authenticities sake. (Perhaps just a bit more careful...
  16. So did you try a different drive? :) From what...

    So did you try a different drive? :)

    From what I have seen so far, my guess was something at the analog level that causes some mac disks to have problems. But I really have very little idea.
    ...
  17. What I would really like to see is some honest to...

    What I would really like to see is some honest to goodness side-by-side scientific comparisons of different methods.

    There are a lot of variables to consider, such as exact material makeup...
  18. Replies
    5
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    119

    I've got one of those in my project pile, and I...

    I've got one of those in my project pile, and I never could figure out how to get it apart either.

    Mine booted the last time I tired it but the built-in screen only showed all white.
  19. Replies
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    438

    There is another Osborn on eBay that says it has...

    There is another Osborn on eBay that says it has serial "A00202". (Those aren't a date code, are they?)
    ...
  20. Replies
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    One had been on eBay last year, but I didn't get...

    One had been on eBay last year, but I didn't get it:

    54463
  21. Hmm, I was under the impression those two were...

    Hmm, I was under the impression those two were essentially the same thing. As I understand it, there is a known compatiblity issue with the high-speed aka "chuck-mod" mode but otherwise, they can...
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    342

    As much as I'd like an alternative competitor to...

    As much as I'd like an alternative competitor to eBay, I hope it does not turn out to be Facebook.
  23. Replies
    11
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    280

    The differences probably involved things like the...

    The differences probably involved things like the version of DOS described and standard peripherals found with the machine. If I recall correctly, one differences between at AT 1.00 and AT 2.00...
  24. Speedstor should be able to format with this...

    Speedstor should be able to format with this card: http://minuszerodegrees.net/software/speedstor.htm That is what I used on mine and it worked.

    But, yea, that isn't really a great card unless...
  25. No, I'm afraid I didn't. I suspect the...

    No, I'm afraid I didn't.

    I suspect the jumpers/connectors are not for user configurable options. The ROM is hard coded to Compaq's 10mb hard drive. Changing to any other size would mean editing...
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