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  1. #1
    Join Date
    Dec 2005
    Posts
    51

    heidenhain monitor volts

    Does anyone know the voltage going to the monitor for a series 1 with heidenhain 151 control?

  2. #2
    Join Date
    Jan 2005
    Posts
    1121
    I know it is an inverted hercules monochrome signal, and the control runs on 120 volts, but never checked what the operating voltage is

  3. #3
    Join Date
    Dec 2005
    Posts
    51
    thanks I think that will help me get started with fixing it.

  4. #4
    Join Date
    Dec 2003
    Posts
    24216
    The majority of older CNC monitors are TTL , also in many cases the horizontal oscillator will not run with out the H. Sync signal present. (blank screen).
    Al.
    CNC, Mechatronics Integration and Custom Machine Design

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.

  5. #5
    Join Date
    Jan 2005
    Posts
    1121
    The manuals on the heidenhain site will tell you the pinout of the monitor, but nothing on monitor guts. If the control is not putting out video, it is the video chip, available pretty cheaply, if that is the case I will go get the number for you

  6. #6
    Join Date
    Nov 2006
    Posts
    925
    I believe the 151 monitor uses about 11 volts dc.Some have an onboard power supply but it sticks in my mind that some get it from a card.
    Mark.

  7. #7
    Join Date
    Jan 2004
    Posts
    185
    I have a Beaver mill with 150 control and a blank screen voltage 240 volts at monitor
    BR

  8. #8
    Join Date
    Nov 2006
    Posts
    925
    Brian,here is the link to the 150 maintenance manual.If you look at the flow chart for testing the vdu you will see it has an 11 volt supply.If you have 250 volts at the monitor I can understand why it`s not working.Are you sure the 250 volts is not the supply to the Heid box which has another power supply inside it for reducing the voltages.

    http://filebase.heidenhain.de/doku/o...0/gb/sa150.pdf

    Mark.

  9. #9
    Join Date
    Jan 2004
    Posts
    185
    mark, 240v to control and 240v to vdu model 114 I think
    sent monitor to omi-monitors.co.uk repair £70 if I need a new tube add £80.
    a lot better than £445 for a recon.
    Brian
    BR

  10. #10
    Join Date
    Jan 2004
    Posts
    185
    I still have an old BBC monitor that I might try to hook up. a chap from a well known repair company admitted to using BBC monitors in some cnc machine repairs
    BR

  11. #11
    Join Date
    Nov 2006
    Posts
    925
    Brian,there`s a psu in the vdu that drops the volts to 11.
    I give my monitors to a local tv guy.Last one was £40,one before it was £30.No packing,put it in motor,drive to the shop,get it back two days later.

  12. #12
    Join Date
    Jan 2004
    Posts
    185
    Mark ,next time I will it blanks out I will phone
    by the way it was the PSU that needed repair
    BR

  13. #13
    Join Date
    Jan 2004
    Posts
    185

    thanks gridley 51

    thanks,
    the guy did fix the monitor £40
    heidenhain no longer supplies 145,150,151 monitors and offer touchscreens £1500 so grab any monitors for spares
    BR

  14. #14
    Join Date
    Nov 2006
    Posts
    925
    Brreid says,
    "heidenhain no longer supplies 145,150,151 monitors and offer touchscreens £1500 so grab any monitors for spares"

    Brian,does that mean I should buy that one that`s on Ebay just now? :-)
    Mark.

  15. #15
    Join Date
    Jan 2004
    Posts
    185
    No Mark,
    because you dont have a 145 Heidenhain control and I wouldn't like to see you waste money
    BR

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