Introduction
The Pyle Astro's power button is a simple push button switch that is soldered onto the main PCB. Use this guide to replace your tablet's power button.
Tools
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            Using the plastic opening tool, work your way along the edge of the tablet. 
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            Once all clips are released, gently open and separate the front display assembly and the rear plastic panel. 
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            Place the front display assembly facing front side down to expose the inside. 
 
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            Flip the PCB board upside down to expose the solder joints for the power button. 
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            Gently de-solder the four solder joints of the push button switch (power button). 
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            Install the new push button switch and solder all the connections back into place. 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.