Einleitung
Use this guide to remove and replace a faulty motherboard in your Canon PowerShot SD870 IS.
Werkzeuge
Ersatzteile
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Remove the two 4 mm Phillips #00 screws on the bottom of the camera.
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Remove the screw next to the wrist strap attachment.
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Pull up the “A/V OUT DIGITAL” cover and remove the screw above the USB port.
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Remove the two Phillips #00 screws from the flat end of the camera.
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Remove the black L-shaped side cover plate.
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Remove the silver u-shaped retainer plate.
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The first screw that needs to be removed is located on the bottom of the camera, on the left hand side.
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Using a Phillips #00 screwdriver remove the 0.133in silver screw on the bottom left-hand side.
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The second screw that needs to be removed is located on the top of the camera.
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Using the same Phillips head screwdriver, remove the last 0.133in silver screw.
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This will detach a silver U-shaped piece that was holding LCD screen on. Remove the piece and put it to the side.
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The LCD screen should now only be attached by the LCD data cable.
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Lift the screen from the right side and use a small screwdriver or other small opening device to flip the black portion of the connector upward to unlock it.
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Carefully slide the data cable out of the connector.
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The LCD should still be connected by the backlight cable.
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To remove the backlight cable, use another small opening device to unlock the backlight cable.
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Carefully slide out the backlight cable.
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The LCD screen should now be fully detached from the camera body.
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The LCD screen casing is connected by 4 claws located on the top and bottom on the left and right hand side.
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Carefully disengage the claws by gently prying them off one by one.
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Once the claws are disengaged, the back of the casing will still be connected to the front casing by the backlight cable.
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Carefully peel the backlight cable off of the casing.
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The LCD screen and housing should now be in three pieces:
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LCD screen
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LCD screen frame
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LCD screen back housing
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The LCD screen itself can now be removed and fixed/replaced.
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With the case and LCD screen removed, you are ready to remove the release button.
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Begin by using the Philips #00 screwdriver to remove two silver 0.159in screws on the top and front of the camera.
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The top plastic piece holding the release button should be held on only by a red-and-black wire connector to the logic board.
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Remove the connector from the logic board and detach the release button housing from the camera.
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With the plastic housing for the release button removed from the camera, use the Philips #00 screwdriver to remove two silver 0.090in screws.
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The release button can now be removed and fixed or replaced.
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With the case, LCD screen, and release button housing removed, the logic board can be accessed and removed for replacement or repair.
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Begin by using the Philips #00 screwdriver to remove two silver 0.080in screws on the left side of the metal housing plate (yellow circles).
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Use the Philips #00 screwdriver to remove nine silver screws from the back and top of the camera (red circles).
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The metal back plate can now be removed. All that is holding it on at this point are pins and wires connected to the logic board.
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Now, the wires connected to the logic board must be removed. Gently pull them out of their holders on the logic board.
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Once the connectors are disconnected, the logic board can be removed for repair or replacement.
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To reassemble your device, follow these instructions in reverse order.