crwdns2915892:0crwdne2915892:0
The START/PAUSE/RESET buttons of the Atari 5200 controller can become unresponsive due to dirty/overused connections. Opening the controller and reseating/cleaning the interfaces to these sensors can improve the button's responsiveness.
crwdns2942213:0crwdne2942213:0
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Using a plastic or metal spudger, pry open the face of the button module.
 
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Take off the plate and the rubber buttons.
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Clean the exposed contacts.
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Reassemble by following the steps in reverse.
 
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Test the controller. If these step don't improve connectivity, take a look at the circuitry replacement guide.
Test the controller. If these step don't improve connectivity, take a look at the circuitry replacement guide.