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Use this guide to replace the Canon Powershot A75's casing.
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            Turn the camera over and locate the "BATT OPEN" sliding switch. 
 
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            Remove the three 2.5mm screws on the bottom of the camera. 
 
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            Remove the 3.8mm screw underneath the flap that covers the A/V port. 
 
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            Remove the 2.4mm screw located underneath the cover of the memory card slot. 
 
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            Open the memory card slot by sliding it laterally until you hear a click. 
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            Remove the 5.9mm screw in the upper corner of the memory card slot. 
 
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            Remove the two 4.1mm screws at the bottom of the battery flap. 
 
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            Lift the shutter button and speaker part from the top of the camera. 
 
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   crwdns2935267:0crwdne2935267:0Tweezers$4.99- 
                     
            Using a pair of tweezers, grab the plug that connects the speaker to the camera and gently pull it out. 
 
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            Remove the rightmost 4.2mm screw underneath the battery cover, not the center screw. 
 
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            Separate the back casing and front casing of the camera using your hands. 
 
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            On the front of the camera, press the button on the lower left of the lens. 
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            Twist the outer lens casing counter-clockwise and slide it out. 
 
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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Thank you for this detailed guide. It helped me to gain access to the electrical contacts in the battery compartment to remove alkaline battery corrosion
