failing Radeon 2600XT head?

Discussion in 'Mac Pro' started by williemyers, Feb 28, 2016.

  1. williemyers macrumors newbie

    Jan 1, 2009
    hey guys...
    My MacPro 3,1 has been successfully using it's ATI Radeon 2600XT to drive 2 x 25" ASUS monitors for about 3 years now. That would be under OSX 10.8.5 or OSX 10.11.3.
    Now, occasionally on restarts - or some bootups - the "secondary" monitor shows nothing, reports "DVI no signal" and goes to sleep. The "primary" monitor (the one with the menu bar) has no such problems.
    I have switched monitors and cables in all possible combinations to make sure that it's not a monitor or cable issue. I have removed & reseated all memory and the GPU and no difference. I have run extended AHT and it shows no problems.
    Does it sound like I have a video card about to die?

    thanks in advance
  2. MacVidCards Suspended

    Nov 17, 2008
    Hollywood, CA
    Yes it does. Clean the gold fingers on PCIE slot part of card, and start looking for a replacement
  3. Machines macrumors 6502


    Jan 23, 2015
    Fox River Valley , Illinois
    Learn how to re-thermal paste your video card and also regularly remove all dust from the cooler . Older cards die because they get too hot . Dry paste and dust contribute to over-heating situations .

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