Introduction
This Cyber-shot DSC-H55 guide will show you how to remove all the necessary pieces in order to reach and disconnect the lens and replace it.
Tools
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            Use the Phillips #00 screwdriver to remove the two screws located on the right side of the camera. 
 
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            Use the Phillips #00 screwdriver to remove the three screws on the bottom of the camera. 
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            Use the plastic opening tool to lift the cover containing the patent information off. 
 
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            Place the plastic opening tool in the crack between the metal circle and the black piece on the left. 
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            Slide the black cover and lift to remove. 
 
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            The first picture shows how the left side of the camera looks once we remove the side piece. 
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            Use the Phillips #00 screwdriver to remove the two screws on this left side. 
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            Flip your camera to the right side where we removed the first two screws. 
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            Use the plastic opening tool into the crack and lift in order to loosen that side of the shell. Loosening one side makes removing the entire shell easier. 
 
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            Removing the outer shell will expose the motherboard (the green chip). 
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            Carefully grab the motherboard and flip it over. 
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            Locate the ribbon wire protruding from the motherboard. Grip the wire as close to the white square as possible and slightly pull it to disconnect it from the wire. 
 
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            Remove the LCD Screen to separate the metal frame connecting the screen to the camera. 
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            Gently pull the metal frame away, keeping in mind that the right end of the screen is attached by a ribbon wire. 
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            Slowly remove the metal frame until it fully pops off. 
 
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            Flip the metal screen to be facing down. There will be a small black clip on the white connector that will allows the ribbon wire to be removed. 
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            Carefully lift the black clip and slide the ribbon out in order to remove the LCD screen. 
 
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            Remove the Phillips #00 screw located at the top middle of the camera. 
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            There is a ribbon wire on the top right. Make sure to disconnect the ribbon wire as you did in the previous step. 
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            Slowly and carefully pull up. 
 
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            Remove the two orange screws located under the lens. 
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            Remove the plastic by grabbing the right side of the camera and pushing it away in order for the plastic to come out. 
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            By removing the plastic, we can now easily remove the ribbon wires by lifting the black clip and sliding ribbon wire out. Use tweezers if necessary. 
 
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            Once the ribbons are detached, the lens is now completely detached from camera and can be replaced. 
 
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To reassemble your device, follow these instructions in reverse order.