Question about Onkyo TX-SV727 Receiver
The protector comes on to keep the amp from further damaging itself or the speakers. The buzz you heard was probably 60HZ line buzz from the main DC supply conducting full current through one of your speakers through a damaged amplifier transistor. Your stereo will need professional repair. The protect circuit basically opens the speaker relay (and sometimes shuts down the unit) to prevent this DC voltage and current from getting to your speakers until the problem is corrected.
Posted on Jun 17, 2009
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Posted on Jan 02, 2017
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That could meen that something is improperly connected. You should try to disconnect everything, and then reconnect it step by step.
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