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  1. Replies
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    Compaq Portable Display shaking

    Ok, another problem here. Picture on my Portable display is shaking and its very disturbing to do something on it.
    Any solution for this?

    https://youtu.be/Mq0u15MpWN8
  2. Replies
    5
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    179

    Not helped at all... Its looks like there is...

    Not helped at all...

    Its looks like there is some plastic spot, which is not moving with whole panel, but i cant identify what can it be. This spot is not accessible from inside so if is there...
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    179

    well, nothing helpful.

    well, nothing helpful.
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    179

    Compaq Portable opening

    Hello,

    I have troubles with opening my Compaq. Is there some trick? I watched some videos on Youtube and I dint see any problem with that.
    I can open it only like this (picture) nothing more, I...
  5. Replies
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    1,349

    Good job, I suppose that many geeks here welcome...

    Good job, I suppose that many geeks here welcome this replacement when it will be for good price.
  6. Maynard Electronic Hard Drive Motor Problem

    Hello, I have ISA HardCard 20 from Maynard Electronic. There is nice 20MB 3,5" MFM hard drive. Problem is with disk rotation. When I turn it ON, disk is not rotating, but when I start gently turning...
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    If you dont have enough slots in 5150, just buy...

    If you dont have enough slots in 5150, just buy an IBM Expansion Unit 5161, that's why it was introduced! :D
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    There are two main revisions, revision A - 16-64k...

    There are two main revisions, revision A - 16-64k and revision B - 64-256k.
    Also there are three bios versions.
    Check site http://minuszerodegrees.net/
  9. It is possible, but why didn't they apply this to...

    It is possible, but why didn't they apply this to later PC's? IBM PC XT and also Portable PC is counting normally, my XT is 0027853 from 05/1983 and Portable PC is 00011119 from 03/1984.
  10. I want also solve mystery about counting of first...

    I want also solve mystery about counting of first IBM PC's. Why to hell they started with 0100001 and after 0199999 continued with 0200000? I cant see any logic here. Ok, time for conspiracy theory....
  11. IBM PC 51xx real number of pieces produced?

    So, probably we all know this chart of IBM PC's produced.

    57870

    I dont know to understand these numbers. Is this numbers of PC's produced ever, or only in US? Because its very suspicious IMHO....
  12. Replies
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    479

    Some source about it? I didnt find anything about...

    Some source about it? I didnt find anything about "5171" and "5167" monitor
  13. Replies
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    479

    There is not one word about number 5171 there

    There is not one word about number 5171 there
  14. Replies
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    479

    IBM PC AT 5171 and 5167 monitor???

    I am not drunk! What to hell is this? Never heard about these numbers.

    57653

    57654
  15. Replies
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    But dont forget to fact, that disk is working...

    But dont forget to fact, that disk is working without any problems on 386 computer with 1024/5/17 parameters. So I assume, that disk is OK.
  16. Replies
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    1790 sorry

    1790 sorry
  17. Replies
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    1,433

    Ok I dont want to LVL format it agin because now...

    Ok I dont want to LVL format it agin because now disk is stable and full of dates, but when I switch now to type 17, I get error 1780 on startup.
  18. Replies
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    I will try. But all attempts with type 17 was...

    I will try. But all attempts with type 17 was failure. Until switching to type 11 I didnt have successful boot or no post error.
  19. Replies
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    UPDATE: I used controller from 386 PC, Its...

    UPDATE:
    I used controller from 386 PC, Its WD10006V-MM2 and ST-4053 works on IBM AT without any problems. So only explanation is that IBM controller (first and also second generation and also WD...
  20. Replies
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    I am using always jumpering which work correctly...

    I am using always jumpering which work correctly on previous disk (ST-4038). On IBM AT is not twisted cable so position is 1-2. On 386 is twisted, so correct position is 3-4.
    Now I am trying older...
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    Exactly

    Exactly
  22. Replies
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    1,433

    No, seek test not passes at all, instant error in...

    No, seek test not passes at all, instant error in first two entries
  23. Replies
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    1,433

    I tried, disk is fine. Its not working with IBM...

    I tried, disk is fine. Its not working with IBM AT controller, I dont know why..
  24. Replies
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    1,433

    But this drive work perfectly on my 386 computer

    But this drive work perfectly on my 386 computer
  25. Replies
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    Low level format of course. I use IBM AT...

    Low level format of course. I use IBM AT diagnostic diskette to LVL format ST-4053 but there was error message right on start of formating. I dont remember exactly type of error right now. Also tried...
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