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  1. Thank you Steve for the offer. Let's hold off...

    Thank you Steve for the offer. Let's hold off PDF for a while and see if someone else has already done the heavy lifting. If I find a paper copy I'll do it myself.

    Thanks again,

    -CH-
  2. RFI: Tandy / Radio Shack PC-8 Manual Sought

    The PC-8 is the last of the "pocket" series; I have one with the printer and cassette interface base. It's a nice unit albeit tiny.

    The Sharp PC-1246 was sold as the PC-8. I have the Sharp...
  3. Thread: Time to Sell

    by clh333
    Replies
    3
    Views
    79

    Non-Gate-Array; separate boards for FDC and...

    Non-Gate-Array; separate boards for FDC and serial I/O. This board has nominal 4 MHz Z-80 CPU but has an extra wait-state added yielding an effective 3.5 MHz. Also has two crystals for timing...
  4. Thread: FS: MacInker

    by clh333
    Replies
    2
    Views
    54

    I think you just did, thanks! -CH-

    I think you just did, thanks!


    -CH-
  5. Thread: Time to Sell

    by clh333
    Replies
    3
    Views
    79

    Time to Sell

    Earlier this year I acquired an early, NGA, Model 4 (serial number 0005864) from an eBay seller who advertised it as non-working. With help from this community - especially Larry Kraemer - I managed...
  6. Thread: FS: MacInker

    by clh333
    Replies
    2
    Views
    54

    FS: MacInker

    The famous (or infamous) ribbon reinking device from the '80s. Base with motor plus distribution cups and cartridge drive adapters, but no ink: Roll your own.

    $30 plus shipping via USPS to...
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    From Ian Mavric: "The CRTs should be...

    From Ian Mavric:

    "The CRTs should be interchangeable. You can switch a screen-burned CRT with a good one from an other system no problems.

    Motorola and RCA made video systems for the Model II,...
  8. Did you look at...

    Did you look at https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2380057.m570.l1313&_nkw=NCR+8496&_sacat=0 ?

    -CH-
  9. Replies
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    CRT Cross Reference Question

    TSBs for the Model II note that RCA and Motorola boards and CRTs are matched and, although similar in theory of operation, are not to be intermixed. Pete (pski) was kind enough to furnish this...
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    Having just ruined a CRT let me second the...

    Having just ruined a CRT let me second the cautions about lifting the top case. The back of the CRT, where the electron gun board sits, can catch on wires running to the motherboard, which is at the...
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    I replaced C103 on the electron "gun" board even...

    I replaced C103 on the electron "gun" board even though the original tested in spec, because I could see an horizontal crack in its case. I reasoned that my tester, at low voltage, might not be...
  12. Replies
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    761

    Update: C103 out of circuit tests as 0.098uF. ...

    Update: C103 out of circuit tests as 0.098uF. Don't know how to explain the discharge.

    -CH-
  13. Replies
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    761

    On closer inspection it appears that C103, a...

    On closer inspection it appears that C103, a 0.1uF 50V mylar capacitor has failed. I will remove this and verify my hypothesis. I don't know at the moment if I have a suitable replacement.

    Other...
  14. Replies
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    761

    Apparently this is what a video centering magnet...

    Apparently this is what a video centering magnet looks like: (See attached)

    These are on the yoke. Note a double at the top. Are there different strengths - a color coding system, maybe? Does...
  15. Replies
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    761

    Proceeding with testing; top half lying on its...

    Proceeding with testing; top half lying on its side next to the CPU; I powered up the computer with disk drive doors open and after a few seconds got the display "Diskette?". The display intensity...
  16. Thread: For sale

    by clh333
    Replies
    9
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    717

    Following on Pete: Do tell us more... -CH-

    Following on Pete: Do tell us more...

    -CH-
  17. Replies
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    761

    I have installed a new CRT, which I had acquired...

    I have installed a new CRT, which I had acquired previously for another purpose but which is a direct replacement, and guided by Ian Mavric's video am about ready for testing and alignment.

    One...
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    Yah, I knocked off the end nipple and bent the...

    Yah, I knocked off the end nipple and bent the pins. What an idiot; I knew better. :mad:

    If someone anticipates a possible repair I will set it aside and donate it; otherwise it will go where...
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    Just to confirm:

    Working on a Model 4 that had seen better days: The top half of the chassis had been off before but I had to go in again to replace the keyboard and upgrade the drives and add hi-res video. I...
  20. Thank you, Patrick. -CH-

    Thank you, Patrick.

    -CH-
  21. Thread: Everex EV-178

    by clh333
    Replies
    1
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    130

    Thanks. -CH-

    Thanks.

    -CH-
  22. Replies
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    3,159

    I find it best not to inform my potential victims...

    I find it best not to inform my potential victims of their impending fate. Makes 'em nervous and raises the adrenaline levels; then they taste even more gamey. And thereafter you'll need to sleep...
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    Congratulations on your decision; keep up the...

    Congratulations on your decision; keep up the good work. Less intake and more exercise are the time-honored methods for weight loss. Walking is surprisingly useful exercise.

    -CH-
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    Lemme look; I think I got one... Apparently...

    Lemme look; I think I got one...

    Apparently not. Sorry.

    -CH-
  25. Well, I'd be interested in the AS/400s depending...

    Well, I'd be interested in the AS/400s depending on which model and whether they came with OS software. I posted here some time ago (Nov. of '19) asking for advice about which iSeries to obtain and...
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