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  • Need 11/93 repair

    From Jerry D@gtdelaney@gmail.com to alt.sys.pdp11 on Thu Nov 17 07:56:17 2022
    From Newsgroup: alt.sys.pdp11

    I have an 11/93 (M8981-AA KDJ11-EA) that has shown an error alarm 000002 under testing. I assume that this is a repairable fault but I have neither the knowledge nor expertise. Can anyone recommend a facility/person that is in the business/hobby of repairing vintage DEC cards and what I might expect to pay for said services??
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  • From Jon Schneider@jon@jschneider.tenreversed to alt.sys.pdp11 on Thu Nov 17 16:56:33 2022
    From Newsgroup: alt.sys.pdp11

    On 17/11/2022 15:56, Jerry D wrote:
    I have an 11/93 (M8981-AA KDJ11-EA) that has shown an error alarm 000002 under testing. I assume that this is a repairable fault but I have neither the knowledge nor expertise. Can anyone recommend a facility/person that is in the business/hobby of repairing vintage DEC cards and what I might expect to pay for said services??

    You should mention your location.

    Jon
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  • From Jerry D@gtdelaney@gmail.com to alt.sys.pdp11 on Thu Nov 17 08:59:29 2022
    From Newsgroup: alt.sys.pdp11

    On Thursday, November 17, 2022 at 11:56:35 AM UTC-5, Jon Schneider wrote:
    On 17/11/2022 15:56, Jerry D wrote:
    I have an 11/93 (M8981-AA KDJ11-EA) that has shown an error alarm 000002 under testing. I assume that this is a repairable fault but I have neither the knowledge nor expertise. Can anyone recommend a facility/person that is in the business/hobby of repairing vintage DEC cards and what I might expect to pay for said services??
    You should mention your location.

    Jon
    Sorry, I'm in the US, Massachusetts to be specific.
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  • From Michael Lesychyn@michaeljacoblesychyn@gmail.com to alt.sys.pdp11 on Mon Nov 28 14:45:49 2022
    From Newsgroup: alt.sys.pdp11

    On Thursday, November 17, 2022 at 11:59:30 AM UTC-5, gtde...@gmail.com wrote:
    On Thursday, November 17, 2022 at 11:56:35 AM UTC-5, Jon Schneider wrote:
    On 17/11/2022 15:56, Jerry D wrote:
    I have an 11/93 (M8981-AA KDJ11-EA) that has shown an error alarm 000002 under testing. I assume that this is a repairable fault but I have neither the knowledge nor expertise. Can anyone recommend a facility/person that is in the business/hobby of repairing vintage DEC cards and what I might expect to pay for said services??
    You should mention your location.

    Jon
    Sorry, I'm in the US, Massachusetts to be specific.
    You might want to be a little more explicit in terms of what specific error alarm and what testing? Is this an LED/Diagnostic/Specific Test error which is generated during the self-test at power-up of the board or is this another test of the system the board is integrated into? I would recommend taking a read through the DEC User Manual for the KDJ11-E on bit-savers (EK-KDJ1E-UG-001) if you have not already, Chapter 4 may have a clue to the issue you are experiencing if it is with the board.
    Cheers,
    Michael
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  • From Johnny Billquist@bqt@softjar.se to alt.sys.pdp11 on Thu Dec 1 17:14:53 2022
    From Newsgroup: alt.sys.pdp11

    On 2022-11-28 23:45, Michael Lesychyn wrote:
    On Thursday, November 17, 2022 at 11:59:30 AM UTC-5, gtde...@gmail.com wrote:
    On Thursday, November 17, 2022 at 11:56:35 AM UTC-5, Jon Schneider wrote: >>> On 17/11/2022 15:56, Jerry D wrote:
    I have an 11/93 (M8981-AA KDJ11-EA) that has shown an error alarm 000002 under testing. I assume that this is a repairable fault but I have neither the knowledge nor expertise. Can anyone recommend a facility/person that is in the business/hobby of repairing vintage DEC cards and what I might expect to pay for said services??
    You should mention your location.

    Jon
    Sorry, I'm in the US, Massachusetts to be specific.

    You might want to be a little more explicit in terms of what specific error alarm and what testing? Is this an LED/Diagnostic/Specific Test error which is generated during the self-test at power-up of the board or is this another test of the system the board is integrated into? I would recommend taking a read through the DEC User Manual for the KDJ11-E on bit-savers (EK-KDJ1E-UG-001) if you have not already, Chapter 4 may have a clue to the issue you are experiencing if it is with the board.

    Fully agree. It's really hard to say anything based on this.

    During a normal boot, the machine will be displaying a count down of
    codes in the 7-segment display. But there, if you see a 2, it's not an
    error, but that the booting is now trying to boot from code in the eeprom.
    It could possibly stay there for ever.

    You you run the built-in diagnostics, I don't think it can show an error
    code of 2. And if it's when running some other tests, or software, it
    would be really helpful to know what.

    Also, a very silly thing to point out. There is a small lithium battery
    on the CPU board. Have that ever been replaced? I don't think you'd get
    an error if not, but just in case...

    Johnny
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