Frozen Motor..

Discussion in 'Free To Air (FTA) Discussion' started by TimLones111, Jan 24, 2013.

  1. TimLones111

    TimLones111 Topic Starter Active SatelliteGuys Member

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    A few weeks ago I was trying to reset my Openbox Channels, and the motor (Sadoun DG280) moved very slowly to the left-And just stopped..Tried to reset everything at the receiver, and a manual reset at the motor itself, but the dish will not move at all..And I get a "clicking" noise when I push the buttons on the motor..Could the LNB be shorted out, or is the motor just shot?..Replaced the Openbox with an old Fortec Star Receiver..Did not help..
     
  2. Lak7

    Lak7 SatelliteGuys Family
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    You can try a different cable, but the "clicking" is not a good thing.
     
  3. xtgold

    xtgold Active SatelliteGuys Member

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    only an autopsy will show the cause of death.
     
  4. Lone Gunman

    Lone Gunman SatelliteGuys Family

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    Did you check the voltage at the motor to see what it is?
     
  5. Bongu

    Bongu Addicted beyond recovery
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    The clicking is telling you that your motor is receiving some level of voltage and current from the receiver. Check all of your connections to make sure there is no corrosion. Remember to tighten the connectors FINGER TIGHT ONLY and also remember that RG-59 cable will not cut it for satellite use.
     
  6. AcWxRadar

    AcWxRadar SatelliteGuys Family

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    I would say that the CLICKING you hear is the relays inside engaging or disengaging, which means something is working. Since the motor slewed very slowly and then stopped, I would wonder if:

    1] The backlash is too tight and the temperature has caused it to bind more.
    2] The extreme temperature has allowed some moisture inside to freeze and bind the motor.
    3] You have a high DC line loss and low current at the motor.
    4] Your relay contacts are dirty and arced and not making good contact.
    5] You have a bad solder connection internally.
    6] You have a bad motor.

    First thing I would try is to take the receiver out to the motor and connect it with a 2 to 4 foot RG6 cable and see if it still acts the same.
    If that corrects it, then you have a bad cable/connector somewhere. If that doesn't pep it up, then it must be within the motor.
    Try warming the motor with a hair dryer (preferably on a warmer, sunny, non-windy day).
    If you still cannot get it to slew, you might just have to take it down and troubleshoot it in the shop.
    Bake it in the oven on the absolute lowest heat for a couple of hours or so. That will dry it out inside completely.
    Then experiment with it and open it up and examine all the circuit traces, solder joints and the backlash adjustment, etc.

    RADAR
     
    #6 AcWxRadar, Jan 25, 2013
    Last edited: Jan 25, 2013
  7. rgk

    rgk Member

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    [h=3]slew[/h]/slo͞o/

    [TABLE="class: vk_txt ts"]
    [TR]
    [TD]Verb
    [TABLE="class: ts"]
    [TR]
    [TD](of a vehicle or person) Turn or slide violently or uncontrollably in a particular direction.[/TD]
    [/TR]
    [/TABLE]

    [/TD]
    [/TR]
    [TR]
    [TD][/TD]
    [/TR]
    [TR]
    [TD]Noun
    [TABLE="class: ts"]
    [TR]
    [TD]
    1. A violent or uncontrollable sliding movement.
    [/TD]
    [/TR]
    [/TABLE]

    [/TD]
    [/TR]
    [/TABLE]
     
  8. AcWxRadar

    AcWxRadar SatelliteGuys Family

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    transitive verb

    1: to turn (as a telescope or a ship's spar) about a fixed point that is usually the axis

    Examples of SLEW

    1: He slewed the telescope three degrees south.
    2: He slewed the satellite dish with the H-H motor using USALS motor control from 97.0°W to 125.0°W.

    Just wanted to help you out there.

    RADAR
     
    #8 AcWxRadar, Jan 25, 2013
    Last edited: Jan 25, 2013
  9. Cham

    Cham Professional Hobbyist
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    I had a 9120 apart a while back still works well even at -30 and lower temps. I cleaned out all the old grease and replaced it with Lubriplate formulated for cold temperatures. The grease that was originally installed (applied) seemed to be very thick & sticky even at room temperature, likely fine for warmer climates. In our sub-deep-freeze temperatures it turns into glue.
    Of course your issue may be something else electronic rather than mechanical...
     
        
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