Introduction
The purpose of this guide is to communicate steps on how to replace or repair the cartridge reader on a ColecoVision.
Tools
Parts
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            Use the metal spudger along the bottom rim of the front panel to safely remove the top of the console. Set aside the top. 
 
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            Remove the two 15mm Phillips #1 screws holding the casing in place. 
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            Remove the casing to reveal the cartridge reader. 
 
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            Desolder the sides of the cartridge reader using the soldering iron and desolder pump. 
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            Patiently wait for the cartridge reader to cool down after being desoldered. 
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            Carefully lift up the cartridge reader. A plastic spudger might be helpful in order to easily remove the cartridge reader. 
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.