Question about SE Electronics Z5600A Professional Microphone

1 Answer

The mic is 'dead' the control box does not produce a 'hum' from the monitor amp when poking wire in the 8 pin Army connector.I think I will first see if the ECC83 htr is working before consulting you further!

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  • 3 more comments 
  • Michael Gamble
    Michael Gamble May 22, 2011

    Dear
    Team


    I have done a little checking with
    this microphone (belongs to a friend) to find out why it doesn't work. Here are
    the results of my tests:


    1. Dismantle mic to expose the tube
    and electronics pcb


    2. Turn on the power/control unit in
    the darkened workshop to check if any glow from ECC83A heaters
    (NO)


    3. Remove ECC83A tube and check
    heater contacts - Pin-outs 4 - 5 and 4 - 9 and 5 - 9 (YES to
    ALL)


    4. Turn on power/control unit and
    check voltages (DC) at Pin-outs 4 - 5 (180v DC !!! ?) I am using a small multi
    meter - nothing exotic.


    Wondering if my interpretation of
    the Pin-out is correct. Looking 'down' on the 9 pin SOCKET I am counting from
    the gap in a clockwise direction starting from 1. This means if I check the
    Pin-out of the ECC83A the numbering will be Anti-Clockwise starting again from
    the 'gap'.


    5. Remove mic. cable from
    power/control unit and turn it on in order to check voltages at cable Pin-out.
    These connectors are 8pin 'Army' type and the pin Nos are given at the base of
    each pin.


    Results:

    1 (+) - 2 (-) = 134v
    DC


    2 (-) - 3(+) =
    12v.DC


    2 (-) - 4(+) = 50v
    DC


    2 (-) - 5 (x) = 0v.DC or
    AC


    2 (-) - 6 (x) = 0v DC or
    AC


    2 (+) - 7 (-) = 7v
    DC


    1 (+) - 7 (-) = 420v
    AC


    1 (+) - 4 (-) = 250v
    AC


    1 (+) - 3 (-) = variable 200v. AC
    depending on position of Polar Pattern control
    knob.




    Please
    comment!


    Michael

    Dear Team

    I have done a little checking with this microphone (belongs to a friend) to find out why it doesn't work. Here are the results of my tests:

    1. Dismantle mic to expose the tube and electronics pcb

    2. Turn on the power/control unit in the darkened workshop to check if any glow from ECC83A heaters (NO)

    3. Remove ECC83A tube and check heater contacts - Pin-outs 4 - 5 and 4 - 9 and 5 - 9 (YES to ALL)

    4. Turn on power/control unit and check voltages (DC) at Pin-outs 4 - 5 (180v DC !!! ?) I am using a small multi meter - nothing exotic.

    Wondering if my interpretation of the Pin-out is correct. Looking 'down' on the 9 pin SOCKET I am counting from the gap in a clockwise direction starting from 1. This means if I check the Pin-out of the ECC83A the numbering will be Anti-Clockwise starting again from the 'gap'.

    5. Remove mic. cable from power/control unit and turn it on in order to check voltages at cable Pin-out. These connectors are 8pin 'Army' type and the pin Nos are given at the base of each pin.

    Results:

    1 (+) - 2 (-) = 134v DC

    2 (-) - 3(+) = 12v.DC

    2 (-) - 4(+) = 50v DC

    2 (-) - 5 (x) = 0v.DC or AC

    2 (-) - 6 (x) = 0v DC or AC

    2 (+) - 7 (-) = 7v DC

    1 (+) - 7 (-) = 420v AC

    1 (+) - 4 (-) = 250v AC

    1 (+) - 3 (-) = variable 200v. AC depending on position of Polar Pattern control knob.


    Please comment!

    Michael

  • Michael Gamble
    Michael Gamble May 23, 2011

    I posted more about this SE Electronics Z5600 mic problem today but I cannot find any reply from Fixya even though told a reply is available. Maybe I'm pushing the wrong buttons!

  • Michael Gamble
    Michael Gamble May 24, 2011

    The mic. is on the bench just waiting for some help. What I need for starters is basic understanding of the pin-out of the ECC83A - which pin is No.1 on the tube and which pin is No.1 on its socket. Obviously they will correspond! That done I can more intelligently pose questions and give the results I am seeing. The voltages shown in my earlier message were taken at the socket of the 8 pin 'Army' female connector on the power/control box to which the multi core cable to the microphone is connected. It would appear that as much as 180v.DC is being delivered to pins 4 & 5 (reading clock-wise on the tube socket) and yet there still is continuity across 4&5 pins on the tube. As this is a double triode there's also a centre pin (9) to the heater which is also showing continuity. Yet 180v.DC should surely have blown that heater element! So where is the 180v. coming from? Is it a 'bogus' reading? Does anyone have the Cct. Diag. for this SE Electronics Z5600A ii microphone unit with voltages at the pin-outs? Again, I am using a simple multi meter with AC, DC and Ohm reading.
    Comments please
    Michael

  • Michael Gamble
    Michael Gamble May 26, 2011

    Hello! Is there anyone there who can answer my questions about the sE electronics Z5600Aii microphone? I have posted the problem to do with there being 180DC applied to what appears to be the heater pins (4-5-9) to the ECC83A tube. I have given the readings I established at the 'Army' 8 pin socket on the control/power unit. Does anyone have the Cct Diag. for this unit showing the correct voltages to be seen at the 'Army' connector? I have had no answer to my postings for 3 days. Please help! Michael

  • Michael Gamble
    Michael Gamble May 26, 2011

    Thank you. I do hope you find the Circuit Diagram for this Z5600A ii microphone control/power unit. I am getting nowhere with it as yet.

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  • Master
  • 1,238 Answers

Good day!

Ok try to check it first.

If you have any question just add a comment.

Thank you

Posted on May 22, 2011

  • 1 more comment 
  • bonifacio gomez
    bonifacio gomez May 22, 2011

    OK that's good.

    Thank you.

  • bonifacio gomez
    bonifacio gomez May 23, 2011

    ok I don't know what is happening on your questions.Maybe hitting a wrong button or there's no expert answer your question.
    thank you

  • bonifacio gomez
    bonifacio gomez May 26, 2011

    OK I search the diagram

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