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27" display with 2560 x 1440 pixels resolution Thunderbolt & MagSafe cable attachments

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What is causing barely seen vertical line

I have a thunderbolt display that recently showing a barely seen vertical line (see picture) some kind of noise, there is nothing else wrong, neither color or picture.

I was wondering if its noise from power supply or logic board or T-CON board, the lcd is LM270WQ1-SDB3.

I dont have a schematics and can not find it either by googling (checking probe point with oscilloscope ).

link to picture:

https://s9.postimg.org/6aczv1z2n/DSC_000...

thanks in advance.

Ted :)

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The ribbon wire inside of the monitor may need to be "reseated". Basically unplugged and plugged back in. Before you go through all that trouble try to eliminate ALL electro-magnetic sources of interference. If it persists, it may be the ribbon wire.

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How about a link to how to do that?

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http://google.com <-- try this one, John. :)

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ted lindsay will be eternally grateful.
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