This is a quick pictorial guide for customer experiencing trouble with detaching the flat strip cable between the main board and plasma logic board in Samsung PN51D6500DFXZA, Samsung PN51D7000FFXZA, Samsung PN59D6500DFXZA, Samsung PN59D7000FFXZA and Samsung PN64D7000FFXZA.
The same connector is also used in the LED versions of the TV -UN46D6003AFXZA, UN55D6003AFXZA and UN55D6005AFXZA.
Step 1: Using a flat screw driver or your finger nails turn 90 degrees the internal cover pressing the cable's end towarsd the base. See the next picture for how it opens up.
Step 2: Press the two black levers at both ends of the connectors inward and while holdging them in pull the connector outside of the female counterpart on the board as shown on the second image below: