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  1. It makes it much easier to replace any chips...

    It makes it much easier to replace any chips later on if you install a socket. The RTC will need to be replaced again at some future point if you keep the system going...



    No, since they're...
  2. Thread: Unknown PC

    by T-R-A
    Replies
    9
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    255

    Almost any ISA VGA card should work in one of the...

    Almost any ISA VGA card should work in one of the 16-bit slots. One pulled from another working machine should at least give some indication of what else may be an issue with the machine (remove the...
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    136

    Yep, common practice. In fact, we have an...

    Yep, common practice. In fact, we have an assembly at work that I work on that normally comes in with 2000F 35v electrolytic filter caps on the output of the 12v power supply. Another assembly we...
  4. Replies
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    143

    And there's no reason you couldn't replace...

    And there's no reason you couldn't replace radials with axials (or vice-versa) either, as long as the leads are long enough and there's not any issue with clearance.
  5. Replies
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    143

    Most designs are largely influenced based on...

    Most designs are largely influenced based on cost. At that time, the likely requirements were cheaper with an radial capacitor than a axial one. The next highest priority is usually real-estate...
  6. Replies
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    143

    Shouldn't be a problem. Make sure you observe...

    Shouldn't be a problem. Make sure you observe correct polarity when replacing. As long as a capacitors stated voltage is equal or greater (up to a point), then it theoretically should work.
  7. Replies
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    171

    Correct me if I'm wrong, but is that...

    Correct me if I'm wrong, but is that furthest-right capacitor in your 2nd pic (C110?) installed backwards? Looks like the stripe is going to the (+) side of the silk screen on the motherboard...just...
  8. Yep, same here. GSETUP is a great utility on...

    Yep, same here. GSETUP is a great utility on older 286/386's. FYI, available here:

    https://www.elhvb.com/webhq/download/index.htm
  9. Sounds like the pot needs some Deoxit. Until...

    Sounds like the pot needs some Deoxit. Until then, you may have more vertical-hold issues....
  10. Replies
    26
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    1,117

    Any standard diode (non-zener) should suffice. A...

    Any standard diode (non-zener) should suffice. A good (cheap) example is a 1N4148
  11. Replies
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    378

    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...
  12. Replies
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    222

    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.
  13. Replies
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    832

    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,...
  14. Replies
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    949

    So TAB, arrow-keys, or nothing works? Are you...

    So TAB, arrow-keys, or nothing works? Are you certain the keyboard is OK?
  15. Replies
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    949

    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.
  16. Replies
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    949

    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
  17. Replies
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    1,243

    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...
  18. Replies
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    1,252

    Not only would the caps blow, but everything on...

    Not only would the caps blow, but everything on that rail would as well....
  19. 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...
  20. 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.
  21. 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...
  22. Sorry, didn't catch that...and good point.

    Sorry, didn't catch that...and good point.
  23. 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.
  25. 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...
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