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  1. #1

    Member Since
    Jun 05, 2006
    Mac Pro/MacBook Pro
    Monitor flickers at startup, then fine, just started
    I have a MacPro 3 GHz Dual Core Intel, OSX 10.5.4, SMC version 1.7f10, Boot ROM Version MP11.005C.B08; ATY, RadeonX1900 (Hope this is a hardware issue)

    Owned it for about nine months, working fine; normal shutdown, powered up and obtained substantial monitor flicker before starting; turned off and performed the reset for the SMC, it started fine, but when I powered it off again and restarted, I received substantial monitor flicker until it got to the blue screen. Logged in and the monitor and the computer works fine. I have had power spike issues at the house.

    Any recommendations or thoughts? Is the video card getting ready to go out?


  2. #2

    harryb2448's Avatar
    Member Since
    Nov 28, 2007
    Nambucca Heads Australia
    iMac, i7 4GHz, 32GB memory, 1TB PCI-e storgae StOS X.13.3
    Firstly open her up, do a clean for dust and make sure the card is seated really firmly and tightly.

  3. #3

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Keller, Texas
    2017 27" iMac, 10.5" iPad Pro, iPhone 6s+, iPhone 7+, Numerous iPods, High Sierra
    I agree with harry. Re-seat the video card or move it to another open slot. Power surges occurring often enough can cause damage to components. I have had that happen with various cards in my PC. If you're in an area susceptible to power surges, it's best to buy and use a good UPS with built in surge protection.


  4. #4

    hughvane's Avatar
    Member Since
    May 18, 2008
    Amberley, Canterbury, New Zealand
    MacMini 4.1, OS 10.11 and 10.6; Macbook Pro 8.2, OS 10.12, MacBook 4.1, OS 10.6.8
    Quote Originally Posted by EarlsMac View Post
    I have a MacPro ... ATY, RadeonX1900 (Hope this is a hardware issue) Any recommendations or thoughts? Is the video card getting ready to go out?
    What type of monitor - CRT or flat panel; and how old? If the former type, it may be a faulty tube which settles down once warm. In addition to the video card check and cleanup mentioned, check the cable connections.

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