The fact that your sound doesn't come in for a while after booting your PS3 into XMB either means your HDMI cable is acting funny or your speakers are acting funny. It's not your PS3's hardware. There is also a slight chance some setting in your PS3 sound settings could be causing the issue. I would test another HDMI cable first. If the problem still exists, try plugging in another set of speakers. Good luck man
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