Polar 115 EMC year of production 78

Discussion in 'Cutters and Trimmers' started by SebastianRomanowski, Feb 11, 2020 at 7:37 AM.

  1. SebastianRomanowski

    SebastianRomanowski New Member

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    Hello. I have problem with start of steering. Main engine starts, when I push a button of steering I have different signs on display instead red digits. When I try push button which moving "saddle" back, it does not work. I check electrical engine responsible for moving backwards/forwards: OK. Clutch is OK. I checked all board on down part below a "table". I found one problem with electricity, I should have 5V but I have only 2,4 V. I can't check boards "above table" because on a electrical scheme I see only as rectangles. Please help me. Best Regards Sebastian
     
  2. CHOCK

    CHOCK Senior Member

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    Please measure the power supply
    attached as indicated in circle Red.

    As you saw your power supply is Faulty since you have 2.4.

    This circuit work with TTL +CMOS IC, you must repair or replace the electronic board.

    Please measure too the +24Vdc
    Let me know, Blessing
     

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  3. SebastianRomanowski

    SebastianRomanowski New Member

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    I check: 24V is ok. 5V I have on board only without connection, when I connect board to circuit I lose 5v and I have only 2,4V. So, You think that board is "broken"?
     

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  4. CHOCK

    CHOCK Senior Member

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    Yes: 100% is sure that you must faulty the power supply
    for +5Vdc, replace I strong recommend you, unless you are skill in repair to level electronic components
    boards.
    Do not waste your time, please see the tolerance that i did send you for +5vdc +24Vdc
    Blessing
     
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  5. SebastianRomanowski

    SebastianRomanowski New Member

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    Thank You very much for help. I will let You know how it ends :)
     
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