Canon EOS 20D Secondary Control Board (C-Board 010) Replacement

Canon EOS 20D Secondary Control Board (C-Board 010) Replacement

Jul 13th 2020

Canon EOS 20D Secondary Control Board (C-Board 010) Replacement
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  • Step 1 Remove The Eyepiece Cap

     

  • Pull up on both sides of the the eyepiece cap. It should come off with little pressure.

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  • Step 2 Remove screws from under the eyepiece cap

     

  • Remove the two screws hidden under the viewfinder eyepiece cap.

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  • Step 3 Remove hidden screw and other visible screw

     

  • Peel off the rubber grip on the back by grasping one of the corners and pulling out.

  • Once removed, a hidden screw is revealed.

  • Remove both visible screws from the rear of the camera.

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  • Step 4 Remove bottom screws

     

  • Remove both labeled screws from the bottom of the camera.

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  • Step 5 Lift and remove the rear panel

     

  • When lifting the panel, make sure not to lift it too high, since you'll run the risk of tearing the cable, or damaging the connector on the board.

  • Flip the lock on the flex cable connector up with a spudger. The front panel should pop off now that the cable has been disconnected.

  • When reassembling the device, make sure to insert the left side of the front panel first, since it has a small lip that needs to fit under the left part of the camera case.

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  • Step 6 Disconnect all the labeled cables

     

  • Disconnect all the labeled connectors by opening their latches. Remove the flex cable that connects the logic board to the secondary control board.

  • Pull the small green connector out of its socket. Be careful when removing it, as it is possible to tear the tiny wires running to the connector.

  • Disconnect the two hidden connectors under the top connector labeled in pink. Disconnect the third hidden connector.

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  • Step 7 Remove the secondary control board

     

  • Remove the three screws from the edges of the board.

  • Flip the board up and out so that the ground connection can be unscrewed.