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Thread: PC6300 no longer POSTs

  1. #51
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    ...there are also schematics of the thing around on the M24 site.

  2. #52
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    Wow, when did that manual get uploaded?
    Yeah, that's all the trimmings in there. The schematics start on page 241.
    I'm going to skim over this but if anyone sees anything I'm open to suggestions right now.
    = Excellent space heater

  3. #53
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    This is online since long time ago.

  4. #54
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    Yes, but to be fair, not a lot of people realize the 6300 is an OEM'd M24, and furthermore, a lot of Olivetti information online is in Italiian. I've owned a 6300 for decades and I only found this manual a few years ago.
    Offering a bounty for:
    - The software "Overhead Express" (doesn't have to be original, can be a copy)
    - A working Sanyo MBC-775, Olivetti M24, or Logabax 1600
    - Documentation and original disks for: Panasonic Sr. Partner, Zenith Z-160 series
    - Music Construction Set, IBM Music Feature edition (has red sticker on front stating IBM Music Feature)

  5. #55
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    Alright, as an effort to eliminate a few suspect components I am going to desolder and socket the nine IC's that were also in the path of the leak and do the same on the loaned M24 so I can swap chips back and fourth until I see something fail. New sockets are on order but given the time of year and my short-sighted decision not to use digi-key we might be ready to test again in a month or two, depending on sea conditions in the Pacific Ocean.
    = Excellent space heater

  6. #56
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    Default

    Quote Originally Posted by Trixter View Post
    Yes, but to be fair, not a lot of people realize the 6300 is an OEM'd M24, .
    --> http://www.old-computers.com/museum/computer.asp?c=531
    --> http://www.old-computers.com/museum/computer.asp?c=535

    So I want to tell you all some secret information...

    Xerox PC 6060 is also an Olivetti M24 ---> http://www.computerhistory.org/colle...alog/102662896

    Logabax Persona 1600, strange name, is also an OEM version of Olivetti M24: http://www.old-computers.com/museum/computer.asp?c=154

    AT&T 6300 WGS is mostly identical with Olivetti M240
    ---> https://www.ebay.com/itm/AT-T-PC-630...-/322293335271
    ---> https://olivrea.de/olivetti-m240/

    There is a AT&T 6386 WGS ---> http://0xea.blogspot.de/2013/11/the-at-pc-6386-wgs.html
    -----> This is one of the Olivetti M380 models, but I don't know which one.

    ... just found another page containng some software for Olivetti based AT&T PCs... http://www5.ncr.com/support/support_...c_library_63xx

  7. #57
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    Quote Originally Posted by NeXT View Post
    Alright, as an effort to eliminate a few suspect components I am going to desolder and socket the nine IC's that were also in the path of the leak and do the same on the loaned M24 so I can swap chips back and fourth until I see something fail. New sockets are on order but given the time of year and my short-sighted decision not to use digi-key we might be ready to test again in a month or two, depending on sea conditions in the Pacific Ocean.
    Okay that ended up taking a year.
    Unfortunately it's still a dud. I give up. I've done chip swaps and stripped the affected area down to the PCB to check for breaks and corrosion damage and I cannot locate the fault. The Hackery also wants their donor M24 machine back. Who was it that at one point was offering another board? I would like to take up that offer.
    = Excellent space heater

  8. #58

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    Sorry I haven't scanned the whole thread. Have you allowed for a bad solder joint somewhere? I have to assume you've pulled every chip, cleaned sockets and pins. What about the p/s? Could it be delivering flakey power? Have you tried booting with no drives (or cards) connected? I don't know a lot about the 6300, have one here that displays garbage when powered on. Got to get busy myself.

  9. #59
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    (I have no rational way to word this post)
    = Excellent space heater

  10. #60
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    Quote Originally Posted by NeXT View Post
    Who was it that at one point was offering another board? I would like to take up that offer.
    Me, I think. I've got 6300 parts I can, uh, part with. Send me a PM.
    Offering a bounty for:
    - The software "Overhead Express" (doesn't have to be original, can be a copy)
    - A working Sanyo MBC-775, Olivetti M24, or Logabax 1600
    - Documentation and original disks for: Panasonic Sr. Partner, Zenith Z-160 series
    - Music Construction Set, IBM Music Feature edition (has red sticker on front stating IBM Music Feature)

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