Introduction
If a fan stops working all together on this device, then replacing it can be a good way to save money over buying a new projector. This guide will show how to get to and replace this part.
Tools
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            Remove the top plastic cover from the device. The back is snapped on so it would help to have leverage from a prying tool. 
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            Remove the ribbon cable attached to the plastic piece just removed. Remember its orientation for re-assembling later. 
 
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            Remove cables from the power supply board. 
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            Remove the screws located around the board to un-mount it. 
 
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            Remove the power board to reveal the bottom two screws to the fan. 
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            Unscrew the fan and replace it with an equivalent one. 
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.