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Type: Posts; User: MrArgent

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    IBM 5140 compact printer: Readying up?

    So, I've got a IBM 5140. I've got the compact printer, and i've got a roll of thermal paper. The printer's set to online and i've given it time to warm up. I can't get it to ready up, however -...
  2. yo send me one of those i need to get in with...

    yo send me one of those i need to get in with CyberDyne systems and I have $20
    https://i.imgur.com/H4InBQh.png
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    Ah, good ol' Kaypro and their chimera machines......

    Ah, good ol' Kaypro and their chimera machines... Non-linear Systems? More like Non-linear Nomenclature!
  4. IBM 5140: how to attach the printer slice?

    So, the printer slice for the 5140 i've been working on made it in. I'm trying to get a printer-serial/parallel-system arrangement going, but i can't actually attach the printer to anything properly....
  5. Got it! Half my problem here was not accounting...

    Got it! Half my problem here was not accounting for different DOSes having differing formats.
    https://i.imgur.com/KuXPYMg.jpg
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    Minuszerodegrees...

    Minuszerodegrees will be an indispensable resource! The Minimum diagnostic configuration might be a good starting point in particular. As far as it totally playing dead on startup goes...If you've...
  7. Giving Kiel's emulator control of a physical FDD?

    So, I've got my TRS-80 running. I've got my fancy schmancy Socket 7 single density-capable diskette workbench working. I've got diskettes, and I've got software. There's one thing between me and...
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    Huh, sounds like there's some major asterisks...

    Huh, sounds like there's some major asterisks with this one.
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    Got it! R213, R214, and two exploded tantalums...

    Got it! R213, R214, and two exploded tantalums were causing trouble.

    https://i.imgur.com/Or1nNuQ.png

    Next call to business is a PSU recap. I'm getting heavy load jitters with the VSIZE set as...
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    Right on. Circuit-wise, the pack is pretty simple...

    Right on. Circuit-wise, the pack is pretty simple - just eight sub-C (or C, failing that, but they won't fit in the original casing) NiCD cells in series with a thermal fuse for protection against...
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    IBM 5140 thermal fuse replacement?

    So, I'm rebuilding my 5140's battery pack. The thermal fuse was too corroded to transplant, though, and i couldn't read the label. Anyone know what I'm looking for? Thanks!
  12. Wanted: The help of anyone well-versed in TRS-80 CRTCs

    So, I have a TRS-80 Model 4 with no vertical deflection. I've been slowly driving myself mad trying to troubleshoot, to no avail. I'm not done yet, but I wanna know who my options are in terms of...
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    Would MTS run?

    Would MTS run?
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    The missing continuity was due to a difference...

    The missing continuity was due to a difference between my CRTC board and the similar one in the 4P manual. Everything needed for the signal to reach 201 is there, so far as I can tell. Next up:...
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    V-Drive Pin 9 to R201 is OK. R201 to R202 is OK....

    V-Drive Pin 9 to R201 is OK. R201 to R202 is OK. R202 to 203 doesn't show continuity, however. Something to crow about? Likewise, R203 to C203 doesn't show continuity, and neither does C203 to IC201...
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    The Good news: The new 5763 works. The bad news:...

    The Good news: The new 5763 works.
    The bad news: It wasn't the 5763. I'm gonna have to go through the logic board, aren't I?

    https://i.imgur.com/700kXa6.jpg

    It occurs to me that I could...
  17. Touching up my Kaypro 2X's chassis paintjob: Options?

    So, I've got a Kaypro 2X that's seen some bumps and scrapes. I got to thinking - If I get the color matched, it might not be -too- hard to get it back to the point of being more or less pristine...At...
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    https://i.imgur.com/Sp9nppO.png Yeah, that...

    https://i.imgur.com/Sp9nppO.png Yeah, that doesn't really seem like adequate...uh, sinkage...for something in that sort of position.
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    Doublepost (my bad!), but photo:...

    Doublepost (my bad!), but photo:
    https://i.imgur.com/KtcmkT6.png
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    Wasn't C204 or C211, unfortunately. Up next is...

    Wasn't C204 or C211, unfortunately. Up next is the vert IC, which is in the mail. I'm hoping the issue isn't on the motherboard's end - that layout's a mess and i've got a Gate Array machine, which...
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    Good to know! I've only been running the machine...

    Good to know! I've only been running the machine long enough to get an idea what shape it's in so hopefully the tube hasn't gotten roughed up too bad from all this. As for those capacitors... Got two...
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    It's worth mentioning that the same TRS-DOS boot...

    It's worth mentioning that the same TRS-DOS boot screen is being shown in that photo as on the 4P's cover page, so not all the horiz. space is being used to begin with. As for the leads, thanks for...
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    Not much beyond a basic multimeter and a logic...

    Not much beyond a basic multimeter and a logic probe, unfortunately. As for the board itself...
    https://i.imgur.com/2YuWnR6.jpg
    This is from before the recap, but the overall configuration hasn't...
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    I've been trying to seek out the schematics for...

    I've been trying to seek out the schematics for the CRTC board accompanying a Phillips 12VCMP31, but neither the pre-Gate Array or post-Gate Array service manuals on the web seem to actually cover...
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    Model 4 vertical deflection: Culprits?

    So, a few days ago my Model 4 developed vertical deflection issues right as I was about to try hammering out some diskettes on my new, single density-capable workbench machine. I just got done...
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