1 5 6 7 8 9 Previous Next 162 Replies Latest reply: Dec 15, 2009 2:29 AM by saledan Go to original post
  • 90. Re: screen flicker resolved?
    volvr Level 1 Level 1 (0 points)
    flickers just in battery.mode?
  • 91. Re: screen flicker resolved?
    Larry_Rymal Level 2 Level 2 (255 points)
    No change at all. The only test I did was scrolling files in a large listing. I no longer have the distortion at the lower half, with or without the power supply.
  • 92. Re: screen flicker resolved?
    dfieman Level 1 Level 1 (0 points)
    Hey all,

    I'm having kind of a similar issue with my late-'08 MacBook Pro. I use the computer for DJing small parties around the Temple University, Philadelphia area, but I do have school work and such on it as well.

    My problem is this: at the last two gigs I've played using Virtual DJ, I've seen my display "blink" (for lack of a better word). The screen is on, goes entirely black for less than a second, and then comes right back on. Nothing else is effected when this happens: the program keeps on chugging with no problems. In both cases the "blink" happened only once the whole night. The first instance I dismissed away as an illusion due to myself blinking; however, there was no mistaking the second instance.

    What might cause these "blinks"? I'm very worried that they may get more frequent, or may herald a bigger problem.

    Thanks in advance,

  • 93. Re: screen flicker resolved?
    playalistic Level 1 Level 1 (0 points)
    Hi all,

    I have the random blinking screen problem with my macbook pro unibody also. I brought it back to the Apple store today at Westfield (London, UK) and the genius acknowledged the problem and took it in for a replacement logic board. I've been quoted up to 2 weeks to wait for the repair but as soon as I get it back I will post the result. Hopefully the issue will be fixed.

    To be clear, the problem only happens on the less powered graphics card and I see either the whole screen going black for a fraction of a second, or sometimes the top half of the screen goes black. Also sometimes I can see small artifacts.

    Anyone who has these problems should bring their machine back for repair or replacement.
  • 94. Re: screen flicker resolved?
    Sheldon King Level 1 Level 1 (35 points)
    Just weighing into the flicker debate.

    My MBP 17 Uni, 2.92, Anti-glare flickers when on battery and the remaining life reaches 1:35 and lower. My guess is it's a power management issue, and turning up the brightness (which I prefer not to do) fixes it.

    PMU update any time soon???
  • 95. None
    Aunty June Level 1 Level 1 (105 points)
    So yors is strobing pulsating too?
  • 96. Re: None
    Sheldon King Level 1 Level 1 (35 points)
    Yes, under the following circumstances:

    - Using battery
    - Brightness on lowest setting
    - Remaining battery time falls below 1:30

    It seems to happen later on in the piece with the discrete graphics card - at about 0:50 remaining battery time.
  • 97. Re: screen flicker resolved?
    Eugene Khoo Level 1 Level 1 (55 points)
    Wait so basically one of these flickering problems is attributed to LCD inversion which technically is somewhat normal?
  • 98. Re: screen flicker resolved?
    Jeff Storm Level 1 Level 1 (25 points)
    For the most part changing from Better Battery Life to Better Performance and setting the screen as bright as it will go seems to take away most of the flicker I was experiencing. There is still some flicker but at least it's not driving me crazy now when I work at night in a darker room.
    For some this might be the easiest fix. I still believe though that the graphics card plays a major role in the problem.
  • 99. Re: screen flicker resolved?
    Sheldon King Level 1 Level 1 (35 points)
    Definitely a backlighting issue here.

    It's started doing it on mains power, and not only on the lowest setting, but on whatever setting is current when ... it starts doing it.

    Turning it all the way up, then back sometimes helps. Turning it all the way down and back sometimes happens.

    Also no longer at 1:30 remaining, power, sometimes at 2:30.

    Apple have done phone-based troubleshooting and have determined that it's a hardware fault. Giben the age of the machine (less than 30 days) I've pressed them to agree to replace the entire machine, so we'll see what happens.
  • 100. Re: screen flicker resolved?
    LemonG5 Level 1 Level 1 (0 points)
    we got a new macbook pro 2.8 last fall which is now as you described blinking to black and back to normal, a black flicker. Happens will we are simply typing docs
    it is becoming more frequent....help
  • 101. Re: screen flicker resolved?
    playalistic Level 1 Level 1 (0 points)
    I picked mine up from the store today and so far it seems as though the replacement logic board has fixed the blinking screen problem. Will report back if I have any more issues later on!
  • 102. Re: screen flicker resolved?
    Jeff Storm Level 1 Level 1 (25 points)
    keep us updated. I spoke to soon. Changing to better performance appeared to reduce the flicker but today it's back. That didn't fix it.
    Did you use an app or something to prove the flicker to the apple store?
    I've been twice and they say they can't see it. If they would go in the back room and turn the lights low they would most certainly see it.
  • 103. Re: screen flicker resolved?
    Aunty June Level 1 Level 1 (105 points)
    i think playalistic is talking about the 'flash/blink' issue (where the screen goes off and on for a split second), not the 'strobing/pulsing' at low brightness levels you are referring to.
  • 104. Re: screen flicker resolved?
    playalistic Level 1 Level 1 (0 points)
    Well looks like I may have spoke too soon. I now have the flickering/strobing effect at low brightness. This definitely wasn't present before. Not happy.
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