My Problem
My 27" Thunderbolt Display started an annoying habit of flickering to a blank screen and sometimes not coming back from sleep. After much online searching I decided to try replacing the built in thunderbolt/magsafe connector cable. I went with this first because if I used an external Thunderbolt patch cable to go from the display to my Macbook, the symptoms disappeared.
My Fix
I was most worried about lifting the glass of the display, but with the suction cups that I bought, it made it a very simple process. A few T10 torx screws later and out came the old cable and in went the replacement.
My Advice
If you are going to try this be sure to buy a new OEM factory cable. It comes with the replacement tapes to hold down cables. Also when lifting the display out of the case let it pivot at the top first so you can disconnect the cables easily before lifting it all the way out.
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