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Amazon.com: Onkyo TX - NR609 7.2 Channel Network THX Certified A/V Receiver (Discontinued by Manufacturer) : Electronics
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Onkyo TX-NR509 Powers ON but HDMI inputs not working after testing. Likely need a new HDMI board. for Sale in Pembroke Pines, FL - OfferUp
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ADD DIY: How to cool your ONKYO receiver -or- Save your HDMI board and prevent the "no sound" repair - YouTube
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