I have had the same problem. My up volume button works only half the time. I have done software repair. Factory reset. All the tips in this forum. And then finnally sent it into sony, it seems they cant even figure it out as they sent it back twice claiming ro have fixed the problem, only to have the device do the same thing out of the box. I am being set up for a third time. I love sony, but this is irritating. Im am hoping that by the third time they Just switch out the guts. Because something os wrong beyond Just a software issue.
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