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Mike_Z
Mike_Z
Senior Member
Last Activity: November 29, 2021, 08:21 AM
Joined: December 1, 2013
Location: Near Milwaukee Wisconsin
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  • Mike_Z
    replied to Repairing an M8650YA
    in DEC
    Started to looking into the receiver end of this card. The start bit is verified as a true start bit. For some reason I can't see the logic. I'm guessing...
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  • Mike_Z
    replied to Repairing an M8650YA
    in DEC
    I want to thank you guys for the help. My old brain had forgetten that many of these chips were Signetics. AND that schematic is really neat! I have been...
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  • Mike_Z
    started a topic Repairing an M8650YA
    in DEC

    Repairing an M8650YA

    Over the summer I picked up an M8650YA board. The past week or so I've been attempting to repair it. Last week I found that the delay line was bad. I...
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  • Mike_Z
    replied to What did I do to my PDP-8 today.
    in DEC
    Doug that sounds correct. I can not remember having that much trouble, unless your puzzle starts out with some pieces missing. Have a good Thanksgiving....
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  • Mike_Z
    replied to What did I do to my PDP-8 today.
    in DEC
    Well..... I removed the inductor from the plastic case. It was a little difficult, The way it was made was the problem. Apparently (this is only an inductor)...
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  • Mike_Z
    replied to What did I do to my PDP-8 today.
    in DEC
    Doug, when I first obtained my PDP8E, it needed a complete cleaning. It lived in a machine shop for many years and was full of dirty machine oil, coolant,...
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    This gallery has 1 photos.
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  • Mike_Z
    replied to What did I do to my PDP-8 today.
    in DEC
    Had a chance to do some testing today. I checked the transmit flag flip flop, using 6040, 6042. 5000. This set and reset the flip flop. I could see a...
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  • Mike_Z
    replied to What did I do to my PDP-8 today.
    in DEC
    Well.... after a nice warm October, November has turned cooler and we have had our first snow. So I have migrated from the garage to the basement. Some...
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    Last edited by Mike_Z; November 17, 2021, 07:51 AM.

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