Canon EOS 70D EFS 18-135mm Lens Main Board Replacement

Step 1: Detach the Lens

First, detach the lens by pressing and holding the release button highlighted in the picture.

Next, grab the lens and rotate it counter-clockwise when looking at the camera.

Finally, when the camera stops rotating, pull the lens away from the camera.

Step 2: Remove the Lens Mount Ring

Remove the four 5.5-mm Phillips #000 screws for the lens mount ring (silver ring).

Remove the two 4-mm Phillips #000 screws mounting the main board connector.

Step 3: Disconnect the Main Board Connector

Using a spudger, pull the connector loose from the barrel switch ring assembly.

Set barrel switch ring assembly to the side.

Step 4: Remove the Main Board

Using a spudger, pull the five connectors out of their housing.

Remove the two 4-mm Phillips #000 main board mounting screws.

Remove the main board from the lens with your hand.

Conclusion

Salvation Repair offers a limited lifetime guarantee of all parts and labor. Schedule a repair at https://salvationrepair.com/repair.

Remember to handle the main board with care, as it is a delicate component. If you are not comfortable with this repair, please consider consulting a professional.

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