Question about Denon AVR-684 6.1 Channels Receiver

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AVR 684 was working normally then shut off with rapidly flashing red led. Have allowed to cool overnight, tried different power sources, disconnected speakers etc, etc. Any ideas?

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  • jeff krus May 11, 2010

    I would try resetting the microprocessor. 1)turn off the . 2) press while simultaneously pressing and 3) once the dsplay stars flashing at intervals f about 1 second, release the wo buttons.

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  • 506 Answers

The unit more than likely has a fault in the power supply or the output stage. Common switching power supply problems are the FETs used for switching fail or the PWM generator fails. Output circuits can be configured many different ways. The trend these days is to use integrated high power amplifiers for each channel instead of discrete push pull amplifier stages.

Posted on Feb 11, 2010

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