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Type: Posts; User: Bill-kun

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  1. Replies
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    579

    Wow, 29 replies and 415 thread views in less than...

    Wow, 29 replies and 415 thread views in less than 24 hours! I must have struck a relatable nerve with everyone!
  2. Replies
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    579

    Facebook Marketplace is where I have had my most...

    Facebook Marketplace is where I have had my most significant successes in searching. My theory is that (1.) I am in competition only with others in my local geography, (2.) many people post things...
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    How is reporting $500 when it sold for $100 not...

    How is reporting $500 when it sold for $100 not illegal?
  4. Oh my gosh!! That's the exact same model I got...

    Oh my gosh!! That's the exact same model I got last year, Epson Apex 1001A-AB! Miraculously, mine also came to me with the monitor and printer and all the boxes! I had to supply my own keyboard...
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    Why the bleep is eBay so expensive??

    I decided this is better to be in the hardware forum than the auction forum. I dont think Im succeeding at not wanting to rant.

    I appreciate people who prevent vintage-out-of-production...
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    I happen to have such a drive in my...

    I happen to have such a drive in my collection—Olympus model MOS330E—and am still building up to a system that can interface with its 50-pin SCSI, but I would love to get 2-3 new old stock disks for...
  7. Just out of curiosity, would you add pictures? :o

    Just out of curiosity, would you add pictures? :o
  8. Yes, that's it. Boy, that's a head-slapper...

    Yes, that's it. Boy, that's a head-slapper moment. :satisfie:

    https://github.com/MobyGamer/TOPBENCH/releases/
  9. Seeking Top Shelf, a program for benchmarking vintage PCs

    LGR has mentioned a benchmarking program called Top Shelf for determining the abilities of a vintage PC. I haven't been able to find this on the Internet. Can anyone provide a link?

    Here is a...
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    I'm sorry; I can't resist the temptation to say...

    I'm sorry; I can't resist the temptation to say that if the keyboard seems overly sensitive, perhaps it would benefit from counseling. :rolleyes:

    66686
  11. How to enter the BIOS for a PCs Limited 286 (Dell clone)

    I recently bought a PC’s Limited 286, circa 1987. I am trying to determine how to forcefully enter the BIOS. Unfortunately, neither the boot up screens nor the BIOS screen nor the chips on the...
  12. Closing the loop on the resistor network for the...

    Closing the loop on the resistor network for the Miniscribe hard drive, I poked around the Bourns catalogs online and got lost. So I just e-mailed their customer service and got a reply back in...
  13. Assuming that the code line actually reads "3u3M"...

    Assuming that the code line actually reads "3u3M" then that means 3.3 uF., and the "M" means tolerance +/-20%. So that eBay listing should work fine since those are 4.7 uF., 35 V., +/-10%. Thanks!
  14. So if I replace this capacitor with a 25 V. or...

    So if I replace this capacitor with a 25 V. or higher, 3.3 uF. or higher capacitor, that will be a suitable replacement, correct?

    Does the material of the replacement capacitor matter? If ceramic...
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    Next question: 3. Was there ever some sort of...

    Next question:

    3. Was there ever some sort of proprietary MFM controller ribbon or MFM data ribbon? I have 2 identical MFM drives that seem to work with only the ribbons that they came with. ...
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    Questions about MFM ribbon cables

    MFM drives (and RLL drives) require a Molex power connection, a control ribbon connection, and a data ribbon connection. The control ribbons are 34 pins.

    1. Are MFM controller ribbons...
  17. I did the measurements in-circuit. RP1 beginning...

    I did the measurements in-circuit. RP1 beginning with "6X" is an SIP resistor network. Diagram looks like this.
    66650

    RP16 beginning with "10Y" is a resistor network with isolated resistors. ...
  18. Thank you! That document looks like exactly what...

    Thank you! That document looks like exactly what I've been looking for for a long time to understand these codes! Here is a screenshot of the table on page 3.
    66647

    I measured the resistance...
  19. I checked RP1, the resistance network that has...

    I checked RP1, the resistance network that has the "burn" mark. There are 6 pins on it, not 7. Each of pins 2-6 measured nearly exactly 470 Ohms relative to pin 1. So unfortunately I haven't found...
  20. Basic question before I go any further. Anyone...

    Basic question before I go any further. Anyone please answer. If I hear a component pop and see smoke, shouldn't I be able to tell which component that was by eye once I disassemble the hard drive...
  21. Since I am on the subject of identifying...

    Since I am on the subject of identifying components, I wanted to ask about this other hard drive that I need to repair because it failed the smoke test when I got it about 3 months ago. I've learned...
  22. Thank you so much. I will order that. Is there...

    Thank you so much. I will order that. Is there a good website or PDF guide to decode the printed numbers?
  23. The solution I’ve chosen is to just buy actual...

    The solution I’ve chosen is to just buy actual 360 kB. floppies.
  24. Need help identifying another circuit board component

    (Few things make me as angry in this hobby as realizing I just unknowningly destroyed a perfectly working, nearly mint condition piece of vintage hardware because I thought the thing that I was...
  25. 360 kB. and 1.2 MB. 5.25-inch floppies: disk and drive compatibility (PC compatible)

    What I think I remember of floppy disks is that you can always format a high-capacity disk to a lower capacity. You could format a 3.5-inch disk with 1.44 MB. capacity as 1.44 MB. or as 720 kB. if...
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