Mitch Scheele

Q: Power PC G4, running 10.4.11. Everything works fine, but the monitor has started the repeating sequence of 3 short flashes. Any way to fix this without re-installing?

Power PC G4, running 10.4.11. Everything works fine, but the monitor has started the repeating sequence of 3 short flashes. Any way to fix this without re-installing?

PowerMac, Mac OS X (10.4.11), G4 with Apple Studio Display

Posted on May 27, 2014 1:40 PM

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Q: Power PC G4, running 10.4.11. Everything works fine, but the monitor has started the repeating sequence of 3 short flashes. Any wa ... more

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  • by BDAqua,Helpful

    BDAqua BDAqua May 27, 2014 4:40 PM in response to Mitch Scheele
    Level 10 (123,501 points)
    May 27, 2014 4:40 PM in response to Mitch Scheele

    Hi Mitch,

     

    If one of the Apple LCD displays detects an error condition, the power LED will flash in a certain pattern to indicate the issue.

     

    Pattern Meaning

    short, short, short

    The display is detecting wrong video format or an unsupported resolution.

    Verify that your equipment is compatible and restart the computer. If the issue continues, reset the PRAM.

     

    short, long, short

    Make sure you are using the correct power adapter with the display. This alert will only appear on displays built in 2004 or later which require an external power adapter.

     

    short, short, long

    The display is detecting a backlight error. Check your display's power connections and restart the computer. If the problem continues, contact Apple or an Apple Authorized Service Provider.

  • by Mitch Scheele,

    Mitch Scheele Mitch Scheele May 27, 2014 6:02 PM in response to BDAqua
    Level 1 (0 points)
    May 27, 2014 6:02 PM in response to BDAqua

    It is two short flashes followed by one long flash. Power connections seem okay. I hope the monitor is not dying.

  • by BDAqua,Helpful

    BDAqua BDAqua May 27, 2014 6:50 PM in response to Mitch Scheele
    Level 10 (123,501 points)
    May 27, 2014 6:50 PM in response to Mitch Scheele

    Either the Backlight is failing or the Inverter for the Backlight, but my 17" ADC/LCD did the flashing for 2-3 years & still worked, I judt put a piece of black tape loosly over the light.