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  1. Sounds like the pot needs some Deoxit. Until...

    Sounds like the pot needs some Deoxit. Until then, you may have more vertical-hold issues....
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    Any standard diode (non-zener) should suffice. A...

    Any standard diode (non-zener) should suffice. A good (cheap) example is a 1N4148
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    As with any machine, it wouldn't hurt to (maybe...

    As with any machine, it wouldn't hurt to (maybe annually) check the inside for dust or obvious visual problems. Maybe run a "drive maintenance" program to see if everything is ok. Otherwise I'd...
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    Most likely the former. Few repair facilities...

    Most likely the former. Few repair facilities used stamps...most likely they were using some sort of sticker.
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    Agree totally. I've replaced lots of caps on the...

    Agree totally. I've replaced lots of caps on the same voltage line without replacing any of the others. 5+ years on a lot of things without any problems. Unless there's a known bad batch of them,...
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    So TAB, arrow-keys, or nothing works? Are you...

    So TAB, arrow-keys, or nothing works? Are you certain the keyboard is OK?
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    Thought you said there's a "user-defined" type...

    Thought you said there's a "user-defined" type 49? That's where you need to input the geometry.
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    https://stason.org/TULARC/pc/hard-drives-hdd/teac/...

    https://stason.org/TULARC/pc/hard-drives-hdd/teac/SD-340H-30-42MB-3-5-SL-IDE-AT.html
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    I'd go with the Tandy (Kyocera) TRS-80 Model 100....

    I'd go with the Tandy (Kyocera) TRS-80 Model 100. More "Laptop-like" than "Laptop", it showed that portable computing was indeed possible...
  10. Not only would the caps blow, but everything on...

    Not only would the caps blow, but everything on that rail would as well....
  11. As modem7 mentions, it could be a RTC-module and...

    As modem7 mentions, it could be a RTC-module and not a "physical" battery. The symptoms shown (Invalid Config, Disk Drive 0/1 errors) indicates that the CMOS/BIOS has lost parameters of what the...
  12. Good point. If it's not got any kind of a...

    Good point. If it's not got any kind of a charge, it's just sitting there being a potential hazard.
  13. Looks like that's it, according to this: ...

    Looks like that's it, according to this:

    http://www.kahlon.com/itemdetailpg.asp?itemid=355912

    Odd that they'd offer it for a Contura 3/25 (386-based machine) since that pre-dated Win95 (and...
  14. Sorry, didn't catch that...and good point.

    Sorry, didn't catch that...and good point.
  15. Any card added to the system will increase the...

    Any card added to the system will increase the load (i.e.-decrease the resistance) on the power supply. With the power supply unplugged from the motherboard, and measuring (with an ohmmeter) across...
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    Quite possibly a flyback transformer. Not a fun...

    Quite possibly a flyback transformer. Not a fun thing to fix.
  17. We all would. But board schematics are a rare...

    We all would. But board schematics are a rare thing indeed. Probably only IBM certified repair techs would have them (and I'm doubtful even they would). Stuff like that is usually on a company's...
  18. If you're going larger than 540MB, then you might...

    If you're going larger than 540MB, then you might as well go with a drive overlay. Realize there's significant limits on drive/RAM sizes for such OS's as DOS/Win3.x & Win9x. And yes, you can...
  19. From the photo, you've got a bad CMOS battery. ...

    From the photo, you've got a bad CMOS battery. Fortunately, AT and PS/2 type keyboards are pretty much universal. The only ones I've had problems with were Compaq's and an occasional Dell. If...
  20. A big THANK YOU!

    A big THANK YOU!
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    ftp://ftp.hp.com/pub/softpaq/sp01001-01500/ ...

    ftp://ftp.hp.com/pub/softpaq/sp01001-01500/

    sp1363.exe is in the directory...
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    Possibility that it's for a RAM/cache expansion...

    Possibility that it's for a RAM/cache expansion card. Where's the location of the current memory and how much is installed?
  23. Precisely. Undoubtedly, support for video-cards...

    Precisely. Undoubtedly, support for video-cards beyond the initial release of Win3.x was greater, but that support was developed by the video-chip manufacturers, and not inherent to the GUI itself. ...
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    Many 16-bit VGA cards work or can be made to work...

    Many 16-bit VGA cards work or can be made to work in 8-bit slots.

    http://www.vcfed.org/forum/showthread.php?26432-8bit-Friendly-ISA-VGA-cards
    ...
  25. The best version of it that I had was "New Deal...

    The best version of it that I had was "New Deal Office 2000", which was "supposed" to be for 386/486 CPU's, but ran on 286's (and maybe 8088's---never tried). Never had a try at the later version...
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