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Type: Posts; User: DeltaDon

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  1. That's the old Beta vs. VHS or cassette vs. 8...

    That's the old Beta vs. VHS or cassette vs. 8 track situation. It's not what's best it is what is selling the most that wins. Some superior 8088/8086 designs were around, often priced to the moon,...
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    I have some old BIOS chip programmer I used years...

    I have some old BIOS chip programmer I used years ago. I'll dig it out and see if it can program your chip if you can supply the part number. If so, I'll send it to you for the cost of shipping.
  3. A fiberglass "pen" from ebay, some IPA (alcohol...

    A fiberglass "pen" from ebay, some IPA (alcohol not beer), household vinegar and distilled water should most of what you need. Vinegar for removing battery "goo" if there's a real time clock with...
  4. With CP/M there's were a few "standard" disks...

    With CP/M there's were a few "standard" disks that most systems could read and software sellers used. The most basic was the 8" IBM disk format. Then there were a few 5.25" "standard" formats that...
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    Elliam Associates?

    Digging though my storage I dug out a CP/M catalog from Elliam Assoc, Atascedero, CA. No date on it and I recall buying some public domain ($1/disk) and commercial software from them back in the late...
  6. I had a P4 mobo starting to act weird, needed a...

    I had a P4 mobo starting to act weird, needed a couple of times to boot correctly etc. Then it died, won't boot at all. I figured since it was an ECS that I'd find a bad cap or two and that would be...
  7. There used to be a DIY "kit" to convert soft...

    There used to be a DIY "kit" to convert soft sector disks to hard sector. I haven't seem one of them in many decades.

    Bringing back the NS power supply could be done with a couple of large power...
  8. Thread: Imsai 8080

    by DeltaDon
    Replies
    10
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    483

    Years ago I sold a dozen NOS laptops to a...

    Years ago I sold a dozen NOS laptops to a Canadian company and the hardest part was working out shipping costs. Cost for 15 lbs times 12 to Canada from S. California, where I was living, plus the...
  9. Thread: Imsai 8080

    by DeltaDon
    Replies
    10
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    483

    Michelle, I'm assuming that your asking price...

    Michelle,

    I'm assuming that your asking price is in $CAD and that makes the price seem higher than some in the USA might think too. Covid makes is hard for cross border pick up these days, but...
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    If I understand what's happening, the CRT...

    If I understand what's happening, the CRT filament turning off is a problem. Without the filament remaining on the CRT is not going to function. So figure out how to get it to stay on and see what...
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    How many boards can be in one package at the...

    How many boards can be in one package at the 78.05 rate? If 10 or so boards then dividing the shipping costs would be about $8 for each board. Less if even more boards in one package.
  12. Thread: Epson QX16

    by DeltaDon
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    5
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    179

    Yes more details please. I too have interest.

    Yes more details please. I too have interest.
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    In the early days of LCD's there were many...

    In the early days of LCD's there were many different connectors and pin outs for LCD's. Each one had its own video cable and sometimes DIP switch settings on the motherboards. I don't have knowledge...
  14. To make success more likely and given the low...

    To make success more likely and given the low cost of the replacement IC's why not just cut all the pins on the 4 157's and then remove the pins one at a time. That way less heat is applied to the...
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    Check for cold solder joints or cracked solder...

    Check for cold solder joints or cracked solder joints and reflow any that look suspect. You might get lucky and need to do no more than that.
  16. The laptop has a standard DIN connector, the only...

    The laptop has a standard DIN connector, the only question is what voltage or voltages goes on each pin. Checking connections on the pins should tell you which is ground and which are used for power...
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    Maybe time to try something else. Got a working...

    Maybe time to try something else. Got a working small size HHD that you can try? Or maybe a IDE/CF adapter? If one or both work then you know the problem is with the SD adapter or SD card. At least...
  18. Any setup errors showing up in device manager?

    Any setup errors showing up in device manager?
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    If one worked before the repair and now doesn't...

    If one worked before the repair and now doesn't work then the repair job wasn't a repair job. Details would be needed as to were the right components used, were they installed correctly. Any issues...
  20. Simple method of removing a chip is to cut all...

    Simple method of removing a chip is to cut all the leads with a good diagonal cutter and then desolder each pin quickly. Cost of equipment for a one time repair is such that finding a person close to...
  21. The Chicony MP975 laptop had one internal drive...

    The Chicony MP975 laptop had one internal drive bay (floppy or CD) and if the CD drive was in the bay they used a serial port cable (DB25) connected to the floppy module to allow the floppy to be use...
  22. Which drivers are you lacking? If you can provide...

    Which drivers are you lacking? If you can provide a chip list (VGA, sound etc) then I might have them in my stack of drivers for Alphatop (Green model), Clevo or Chicony MP series of laptops. My...
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    Looks like a single full height 5.25" floppy...

    Looks like a single full height 5.25" floppy drive in a portable (lugable) carry case and for a Bosch (German company) computer of some sort. It also appears to need TLC with the power cord cut off...
  24. I bought a 486/66 AMS Tech laptop, that's the...

    I bought a 486/66 AMS Tech laptop, that's the laptop company that sold these, way back when it was new. Mine was a different model with a roller ball mouse.

    Here's the Wayback Machine's link to...
  25. Reading my own earlier post I should have said...

    Reading my own earlier post I should have said move all the VIDEO memory over by one socket as long as they are all of the same type. I sure didn't mean to swap chips randomly. :shocked:
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