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Use this guide to remove a broken camera lens from your Canon PowerShot SD850 IS.
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            Remove the following 4 screws: 
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            Two 2.8 mm Phillips #00 at the bottom of the camera. 
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            Two 2.75 mm Phillips #00 on the opposite side of the wrist strap. 
 
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            Open the A/V OUT DIGITAL flap on the side of the wrist strap. 
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            Remove the 2.75 mm Phillips #00 under the A/V OUT DIGITAL flap on the side of the wrist strap. 
 
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            On the bottom of the camera, use your fingernail to slide the light gray tab towards the edge of the camera. 
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            Slide light gray door and pull up to open the door. 
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            Remove the 8.35 mm Phillips #00 next to the brown tab that holds the battery. 
 
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            Gently pull the front cover straight out from the camera. This will expose the wiring on the front of the camera. 
 
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            Remove the 2.75 mm Phillips #00 next to A/V OUT DIGITAL. 
 
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            Slide the back casing (with the screen protector) off to reveal the LCD and back wiring. 
 
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            Remove the 1.75 mm Phillips #00 located at the top left of the LCD screen. 
 
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            Remove the two 3.4 mm Phillips #00 located at the bottom of the camera. 
 
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            Remove the two metal frames that hold the LCD panel in place. 
 
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            The LCD screen should now only be attached by two LCD data cables. 
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            Lift the screen from the left side and use a spudger or a small flat head screwdriver 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 a spudger or a small flat head screwdriver to unlock the backlight cable. 
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            Carefully slide out the backlight cable. 
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            The LCD screen can now be fully detached from the camera body. 
 
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            The LCD screen and housing are now in three pieces: 
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            LCD screen 
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            LCD screen frame 
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            LCD back housing 
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            The LCD screen itself can now be removed and fixed/replaced. 
 
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            Remove the 1.85 mm #00 Phillips located on the left side of the camera. 
 
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   crwdns2935267:0crwdne2935267:0Tweezers$4.99- 
                     
            Use a set of tweezers to remove the speaker located at the top of the camera on the flash unit. 
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            Next use the tweezers to carefully remove the speaker cable off its respective holders. 
 
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            Use a spudger or a flathead screwdriver to remove the camera lens cable located in the front of the camera. 
 
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            Use a spudger or a flathead screwdriver and carefully pry out the first flash cable from the bottom of the cable. The white 2 prong power cable pops UP (use spudger below red/black insertion and put upward pressure). For the yellow one, apply pressure horizontally. 
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            Next use a spudger or a flathead screwdriver and carefully pry out the second flash cable. 
 
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            Gently remove the flash component from the rest of the camera. 
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            Use a spudger or a flathead screwdriver and carefully pry off the plastic piece on top of the flash unit. 
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            The flash unit can now be removed and replaced. 
 
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            Remove four screws located on the back of the camera: 
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            6.15 mm #00 Phillips 
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            2.75 mm #00 Phillips 
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            2.15 mm #00 Phillips 
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            2.7 mm #00 Phillips 
 
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            Use a spudger or a flathead screwdriver and carefully pry out the bulb located in the front of the camera on top of the camera lens. 
 
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            Gently remove the camera lens from the rest of the camera. 
 
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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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If you have a problem on your camera then it is better if you go nearest technician to fix your camera.
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step 10 was very unclear, the dark brown part of the cable connector is what is supposed to be lifted. i tried to lift the black part, as the guide stated, and broke off the data cable connector rendering my camera nearly useless
