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My iMac 27inch Mid 2010 2.93GHz Core i7 (Model A1312-BTO/CTO EMC: 2390 I replaced the LCD Power board and now I have a mismatched VSYNC cable. The cable coming from the LCD is a few wires with a 4pin connector unlike the other temperature cables. The LCD board appears to be a ribbon cable? Does the LCD panel have a way to remove the VSYNC cable from the other end? and if so how would I go about attaching the ribbon cable. Or is it unfortunate that i would just have to buy a new LCD power board that matches the VSYNC cable? Thanks in advance for your help! -Justin Update (09/25/2017)

This is what I see.

jea508 the vsync cable attaches to the LED driver board

You should not have a LED board with a ribbon cable. This is what your board should look like.