Polar 78 x Display

Discussion in 'Cutters and Trimmers' started by Laurie Dempsey, May 29, 2023.

  1. Laurie Dempsey

    Laurie Dempsey New Member

    Joined:
    May 2023
    Messages:
    1
    Location:
    New Zealand
    The display on our 2007 model guillotine has failed. we get a brief dull flash in the screen when the unit is powered up but display is unreadable. we are waiting on a suitable electrician to check the power supply but he is a few days away. Has anyone experienced this type of failure & is it likely to be a power supply or has the TFT screen died ? We have been using it up until today when we have unfortunately caused a backgauge position failure & without a screen can't navigate our way to resetting this. The tft is nearly $10k & 10 working days from Polar.
     
  2. CHOCK

    CHOCK Senior Member

    Joined:
    Dec 2016
    Messages:
    2,924
    Location:
    Managua,Nicaragua
    Hi sir

    You must test in the 3 PCB ;

    A)
    1) kc +24Vdc

    2) DAK output 350V for backlight

    3) LCD / PLASMA /TFT Display 350 Vdc of input for backlight.

    B )look for V6 LED in KC must be ON =+5Vdc.

    C) Look for connectors loose, or corroded, or faulty, or bend pins.

    D) Flat cables or ribbon cables, loose, or faulty , or corroded, or bend PINS.

     
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