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Recent content by retrotechrestoration

  1. retrotechrestoration

    Monarch MP/M-II for Dynabyte computers...

    Tho it looks like those are 8" disk images and my 5200 (DB8/2) is the dual 5" disk model. :( Still looking for any 5" boot disk images...
  2. retrotechrestoration

    Monarch MP/M-II for Dynabyte computers...

    I'll check it out when my Dynabyte DB8/2 arrives!
  3. retrotechrestoration

    Dynabyte DB 8/2 Dated 4/79

    I recently also acquired a DB8/2 that I'll be restoring and posting about on my website when it's done. Very much looking forward to it!
  4. retrotechrestoration

    The South MAI Basic Four Terminal (7250) for Parts (No CRT, case or keyboard)

    Good catch. You're right, it does look exactly like this - https://terminals-wiki.org/wiki/index.php/Basic_Four_7250
  5. retrotechrestoration

    The South MAI Basic Four Terminal (7250) for Parts (No CRT, case or keyboard)

    I recently rescued what appears to be most of a MAI Basic Four Terminal (model 7250, ~1980) from the local e-waste. The parts had been tossed loosely into a box, but they included the power supply, main board, CRT board and CRT. After a bit of testing, I found the power supply works perfectly...
  6. retrotechrestoration

    The South Tektronix CPS 250 Triple Output Power Supply : $100 CONUS Shipping inc.

    *** Tektronix CPS 250 Triple Output Power Supply : $100 CONUS shipping included *** I'm upgrading to a larger power supply, so this one needs to go! Used and slightly scuffed, but works great. Has two 20V/0.5A outputs (in independent mode) and one constant 5V/2A output. Will include a power...
  7. retrotechrestoration

    Looking for a flyback transformer for an Eizo TX-C7 MA-791 17" CRT

    Good intuition...I've been discussing this mostly over on the badcaps forum (https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-computer-displays/3240349-looking-for-a-flyback-transformer-for-an-eizo-tx-c7-ma-791-17-crt). I've tested the...
  8. retrotechrestoration

    Looking for a flyback transformer for an Eizo TX-C7 MA-791 17" CRT

    And according to this site, an equivalent FBT might be the HR46290. https://www.hrdiemen.com/search/index?orig=&page=1574
  9. retrotechrestoration

    Looking for a flyback transformer for an Eizo TX-C7 MA-791 17" CRT

    {Well, RGB at least... not component, but still. It's amazingly well built and been a joy to work on.)
  10. retrotechrestoration

    Looking for a flyback transformer for an Eizo TX-C7 MA-791 17" CRT

    I just saved this magnificent component input Eizo Flexscan TX-C7 MA-791 from the local e-waste...good news, the tube works and the board looks great...the bad news, it sounds like the flyback is shorted. (Turns on...perfect picture...systemic high voltage crackling heard while the picture...
  11. retrotechrestoration

    A Tale of Two XTs (Franklin PC-8000 vs. Acer 500+ II)

    Thanks for catching that! I've updated the article.
  12. retrotechrestoration

    A Tale of Two XTs (Franklin PC-8000 vs. Acer 500+ II)

    The late 1980s saw the explosive rise of the desktop microcomputer. From the Apple II to the IBM PC. And everyone wanted a piece of the action. Both Acer and Franklin built IBM PC clones, but had radically different approaches. Find out who thrived and who withered as I explore the Acer 500+...
  13. retrotechrestoration

    Northgate Computer Systems Software Kit (DOS 4.01, Win 3.0, Northgate Slimline drivers & utilities)

    Here's the link https://archive.org/details/northgate-computer-systems-software-kit-dos-401-win-30-northgate-slimline-drivers-and-utilities I can always update it later. And the README... This appears to be a complete "Software Kit" provided with Northgate Slimline 286 & 386 computers. It...
  14. retrotechrestoration

    Northgate Computer Systems Software Kit (DOS 4.01, Win 3.0, Northgate Slimline drivers & utilities)

    After trying a couple different drives and updating my imaging workflow I have been able to recover much more data from the disks than before. I'll be uploading the results to Archive.org soon. Is just the disk image files fine for you or would you like the individual files extracted to a...
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