MacBooks forum

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Cinema display 30" flickering

by sigmundl / April 16, 2010 5:30 PM PDT

MBP 15" unibody 2009 w. display port dual DVI adapter. Sometimes the attached 30" display flickers and displays weird patterns. Solution?

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Try moving the adapter,
by mrmacfixit Forum moderator / April 16, 2010 10:46 PM PDT

when this is happening.

Could be a faulty adapter


P

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thanks
by sigmundl / April 17, 2010 12:48 AM PDT

maybe, works most of the time

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First
by Jimmy Greystone / April 17, 2010 1:59 AM PDT

First double check that you have a secure connection at both ends. Next test with a different adapter. Or connect the display to another system, see if the symptoms follow the monitor.

If they don't follow the monitor it's either the adapter or the port. If you have another adapter, and the problem persists, you need a new logic board. You probably wiggle the cable to get it out, and that in turn weakens the solder joints from the port to the logic board causing intermittent signal failure. You can also test this if you bend the adapter cable and the symptoms stop. Of course doing that long term will only exacerbate the problem, so don't go getting any ideas.

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sounds likely
by sigmundl / April 17, 2010 7:00 AM PDT
In reply to: First

thanks, makes sense.. I'll try it

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