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Marconi TF-1041 Manual wanted

Discussion in 'Datasheets, Manuals and Component Identification' started by MP4BJI, Aug 25, 2013.

  1. MP4BJI

    MP4BJI

    4
    0
    Aug 25, 2013
    Am trying to repair and restore a couple of old Marconi TF-1041C Valve Voltmeters.
    I have managed to download the circuit diagram from the internet, but it would be really helpful to have the manual for the calibration procedure.
    Does anyone either have a TF1014 manual for copying or know where to get one?
    With thanks
    John
     
  2. davenn

    davenn Moderator

    13,034
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    Sep 5, 2009
  3. MP4BJI

    MP4BJI

    4
    0
    Aug 25, 2013
    TF-1041C

    Many thanks Dave.
    Yes, similar, and a help!
    Have made many lines of enquiry now with result that only the B version which has different power supply design, component location, other differences, appears to be available anywhere.
    But at least I should be able to complete the job using this and the C version circuit diagram. (thanks to Electrojumble and other museum).
    However, the manual for the "C" version seems to have disappeared from UK.
    None of the usual sellers have a copy either.
    It is a great shame there is no central library of manuals of all this beautiful old Marconi equipment, a lot of the information is becoming lost.
    Someone sold a 1041C Manual on EBay some time ago, I might contact them again to ask to whom they sold it, and try to get a copy that way. If I do I will try and publish on one of the museum sites.
    73
    John
     
  4. davenn

    davenn Moderator

    13,034
    1,674
    Sep 5, 2009
    no probs John

    yeah, I also saw lots of references to the B version and nothing for the C version
    ... the way it goes sometimes

    post a couple of pics of your unit ( inside and outside) and dont forget to come back to this thread at some stage and let us all know how you got on with the repairs/restoration. :)

    cheers
    Dave
     
  5. MP4BJI

    MP4BJI

    4
    0
    Aug 25, 2013
    Just to let anyone who is interested that I found the TF-1041C manual eventually.
    Am pleased to say that eventually I restored the two valve voltmeters, not helped by their being considerably different interior design. The layout of calibration preset potentiometers and wiring was completely different despite both marked as TF-1041C and looking identical externally. I think the circuit design was the same though, luckily. The manual calibration procedure is needed, as it is not completely straightforward and differs from the B version.

    If anyone needs a copy of manual contact me.
    John
     
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