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

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I have a vertical green line almost 3" wide

I have a green vertical line 3” wide almost in the center, has been on and off and sometimes not totally solid. Can be running days without showing

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Time to open the system and give it a good dust out! I’m suspecting your logic board is overheating. These monitors can cook with not much dust.Apple Thunderbolt Display LCD Replacement

Get a small soft pant brush and a can of can’ed air to blow the loose dust away after loosing it with the brush.

Clean the fans as well!

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Cesar Sanchez crwdns2934231:0crwdne2934231:0
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