Model #AVR-1508 DENON Receivers

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Why does receiver turn off AVR-1508 Denon Receivers

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Henry -
April 28, 2013

Thank you for contacting Sears Parts Direct with your concerns about your Denon Receiver. I am so sorry to hear it is shutting off on its own when the volume is turned up. I know how frustrating that can be especially in the middle of a program. I will be happy to help you with this. Based on the symptoms you are describing, it sounds like your speakers have a lower impedance than specified for use with this unit. If the speakers do not meet the impedance requirement, using the unit for an extended period of time will cause the internal temperature to rise and activate the protection circuit. When the protection circuit is activated, the speaker output is shut off and the power indicator will flash red. You will need to unplug the unit and wait for it to cool. Then check the speaker cable and input cable connections. While the unit is off I recommend you also check to see if the vent holes are blocked or dirty. Make sure you do not have other equipment stacked on top of the receiver. All of these conditions can also cause the unit to overheat. Continuing to use the unit to the point it overheats can damage it. You should use speakers with an impedance of 6 to 16 ohms. When using front speakers A and B simultaneiously, the speakers should have an impedance of 12 to 16 ohms. Make sure when the speaker cables are connected they do not stick out of the speaker terminals because if a core wire touches the rear panel or if the + and - touch each other it will activiate the protection circuit. Be sure to never touch the speaker terminals while the power supply is connected as you can get an electrical shock.

I hope this helps. If I can be of further assistance please respond to this link. Thank you for choosing Sears, we appreciate your business.

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Rachel Morgan -
Sears Technician
April 29, 2013
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