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Type: Posts; User: Chuck(G)

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  1. I believe I reproduced your diagram back in post...

    I believe I reproduced your diagram back in post #6, with the admonisment to check first, then plug. (XT clones may not follow the 5160 conventions).
  2. One can but hope. The words of our senior...

    One can but hope. The words of our senior engineer still echo in my head "a printed circuit board is no place for a battery". That was almost 50 years ago.
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    I've got an ST-01A and it's touchy to say the...

    I've got an ST-01A and it's touchy to say the least. I prefer to use later controllers. Just used a Trantor T13B and a SCSI zip drive to back up an old XT clone. The bonus is that you get full...
  4. First, get rid of the barrel battery and have a...

    First, get rid of the barrel battery and have a look at the traces under and around it.
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    If it's really heavy--LtoL and palletized. Less...

    If it's really heavy--LtoL and palletized. Less likely to get damaged or have heavy stuff piled on it.

    Some packaging stores negotiate their own contracts with freight haulers and can offer...
  6. A real AT (5170) power supply still supplies -5v....

    A real AT (5170) power supply still supplies -5v. However, make sure that your P8, pin 2 is either NC or connected to the +5 rail. Courtesy of MZD:
    ...
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    A fair point. Strictly speaking, it's not a...

    A fair point. Strictly speaking, it's not a hobby. So I'm very pragmatic about my equipment. Cosmetics mean little to me.
  8. I'd probably just use a good paste wax for...

    I'd probably just use a good paste wax for protection (a good car wax should do). Legacy WD40 is basically stoddard solvent with a light oil.
  9. I must be getting old--I'm pretty sure that this...

    I must be getting old--I'm pretty sure that this question has been asked and answered at least a dozen times over the years. :)
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    Rehabilitate? As in substituting a CF card and...

    Rehabilitate? As in substituting a CF card and controller for the original ST506 drive and controller? Or employing a Gotek emulator instead of a real floppy drive? How is that rehabilitating?
    ...
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    Nope--if I want to seal something, I have...

    Nope--if I want to seal something, I have absolutely no compunction about painting it. That, at least will look great for a very long time.

    I use the stuff; I don't care how it looks.
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    Just my point--but that isn't going to fix...

    Just my point--but that isn't going to fix surface damage done by overdoing the Retr0brite treatment, which was the point in all of this.

    When dealing with ABS that's cracked, I prefer to use a...
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    I think we really want to see the result of you...

    I think we really want to see the result of you repairing the case by reusing the material. That ABS is a themoplastic isn't in doubt--it's the most common mixture for stuff like cases.
  14. No--you're likely to remove more of the metallic...

    No--you're likely to remove more of the metallic zinc that way. You can't do anything with the oxidized zinc spots, other than remove them. If the areas are easy to get to, just a regular metal...
  15. I suspect that you see the white stuff on...

    I suspect that you see the white stuff on glavanized/zinc plated parts and not on, say nickel plate. It's the zinc oxidizing/hydrolizing. Clean with a mild acid, such as vinegar and water or...
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    I think it's this one...

    I think it's this one
  17. I'll have a look at a low-level at an...

    I'll have a look at a low-level at an IMD-formatted 8" floppy and see if there's anything different from standard IBM 3740 in AM's and gaps. Since you're using IMD, have you tried using 22DIsk's...
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    I don't see any LEDs or other indicators on the...

    I don't see any LEDs or other indicators on the keyboard, so why is the serial communication 2-way? (1488-1489)

    So the power feed must be +12, -12 (note the 7805 regulator, so +5 isn't needed).
    ...
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    I happen to have the drivers for the EV-158A (RAM...

    I happen to have the drivers for the EV-158A (RAM 10000) board, that includes EMS.SYS. Do you think that would help?
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    I'd probably just bead-blast the case after...

    I'd probably just bead-blast the case after removing the bezel and make a clean job of repainting.
  21. Don't think that I've ever used anything but the...

    Don't think that I've ever used anything but the neutral CD/DVDs for this from the MSDN collection. I've probably got the odd Win9x CD for OEMs, but never used them.
  22. No, I don't think so. Are you certain you don't...

    No, I don't think so. Are you certain you don't have the Series II MDS with the double-density mod?

    In any case, IBM 3740 diskette format is pretty standard, so I don't think it's something in...
  23. Well, I've got an ISIS-II floppy made by an...

    Well, I've got an ISIS-II floppy made by an MDS800, I'll have a look at it and see if anything pops out. The 8271 was not a popular controller--Intel could barely make it work.
  24. The Series 2 MDS uses what, an 8272 FDC? Or is...

    The Series 2 MDS uses what, an 8272 FDC? Or is it the one with the older 2-board FDC using 3000-series bitslice logic?
  25. What's the controller that you're using? If...

    What's the controller that you're using? If you'd like, I can walk over to my IMD system with the 8" drive and tell you about duplicating 3740-format floppies.
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