Mini displayport to dvi adapter

I'm having a problem with my mini-DP to DVI adapter.
It was working this morning hooked to my Samsung 30" LCD TV via a dvi to hdmi cable. I went out and returned, and moved it over to my Samsung 22" LCD Monitor which was working yesterday without fail. I connect to this using a DVI to DVI cable with the adapter previously mentioned, but today my MacBook 5,1 wouldn't detect the monitor. Power to the monitor is there, and it the MB screen flickers once when I plug the adapter in or out but in the display settings nothing shows! I selected detect displays but nothing still.
I've reset the PRAM, and SMC.
It's been working for weeks now and then all of a sudden. I've even used an older MBP with straight DVI to DVI to my monitor and it works, so I'm thinking it's the adapter. It's a knock off from eBay but how can it just stop working all of a sudden? I don't see any prong damage but who knows?!
Any advice?
Thanks!

The "knock off" adapters aren't always made as well as the items produced by Apple, and thus more likely to fail earlier. If you know the cable is good, you probably need to invest in a new adapter.
~Lyssa

Similar Messages

  • 27: iMac Apple Mini DisplayPort to DVI adapter quits working post-firmware

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    6/5/10 7:29 AM 27-inch iMac Display Update 1.0
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    PCIe Lane Width: x16
    VRAM (Total): 512 MB
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    Revision ID: 0x0000
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    Unfortunately the Apple Knowledge Base does not give much information about this update. Such has how to tell if it has been successfully installed. I suspect that because it keeps recurring in the install log that it has not been installed successfully as yet. Are you receiving this update through Software Update? Can you locate the installer for this update? It maybe located in Apps/Utilities.
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    27-inch iMac Display Firmware Update 1.0
    http://support.apple.com/kb/DL998
    27-inch iMac Graphics Firmware Update 1.0
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    <http://store.apple.com/us/product/MB572Z/A?fnode=MTY1NDA5OQ&mco=MTA4MzU1NDg>

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    I turns out that the logic board of my MacBook Pro was faulty (despite being brand new).
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  • Resolution problem with Mini DisplayPort to DVI Adapter

    Hi,
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