External monitor stuck in Power Save Mode

Discussion in 'Mac Accessories' started by riker1384, May 2, 2010.

  1. riker1384 macrumors regular

    Joined:
    Jun 29, 2007
    Location:
    West Coast
    #1
    I have an aluminum iMac. I got a free Gateway LCD monitor on Craigslist. The owner swears it was working two months ago and he wouldn't stand to gain by lying about that, since it was free. It only has a VGA input. When I hook it up and turn it on, it displays a message about power save mode and then goes black.

    The System Profiler detects that the monitor is there:
    Gateway FPD1730:
    Resolution: 1024 x 768 @ 75 Hz
    Pixel Depth: 32-Bit Color (ARGB8888)
    Mirror: Off
    Online: Yes
    Rotation: Supported


    Does anyone know what could be wrong? I tried switching the VGA cable AND the DVI to VGA adapter in case one of those was bad, but that didn't help. I only have one mini-DVi to DVI adapter, so I can't try another one of those. (It's obnoxious that Apple doens't use the standard DVI connector.)
     
  2. waw74 macrumors 68030

    Joined:
    May 27, 2008
    #2
    in a quick look at the adapter on the apple store, it doesn't have the 4 pins around the blade on the one side (c1-c4 on the pin out on wikipedia).

    Those are the pins that carry the analog vga signal. check your adapter, if those aren't there it won't work.
     
  3. riker1384 thread starter macrumors regular

    Joined:
    Jun 29, 2007
    Location:
    West Coast
    #3
    My mini-DVI to DVI adapter is Dynex brand. It appears to have those pins.
     
  4. riker1384 thread starter macrumors regular

    Joined:
    Jun 29, 2007
    Location:
    West Coast
    #4
    Okay, I'm trying it with a small LCD television that also has a VGA input, and I'm getting the same thing. The computer detects it, but I get no image on the monitor.

    It looks like the Dynex is indeed the problem: http://forums.macrumors.com/showthread.php?t=362518 What a piece of junk. I wonder if they're trying to save half a cent on construction, or to force people to buy even more adapters.

    Thanks for the help. It looks like Best Buy has an Apple mini-DVI to VGA for $22, or a Dynex for $15, and Amazon has some for cheaper.
     

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