Question about NAD 712

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No sound When we turn the receiver on the display flashes the word 'mute' and does not fully light up. The receiver is functioning (you can change stations etc) but there is no sound. This used to happen occasionally, especially if it had been left on, but leaving it off for a while usually fixed the problem. I'm not sure whether it used to flash mute before. This time it had not been left on. It was working beautifully last night and was switched off after the CD finished. Please help!

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Re: No sound

Bad regulators in the power supply or the capacitors in the power supply are drying up. Needs to be taken into a shope as there are no user serviceable parts inside these units good Luck

Posted on Aug 05, 2006

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No power output or standby light flashes.

Sounds like either a blown mainpower fuse or the thermal fuse for the power transformer. If the protect circuit was kicking in, the display would light up, but then turn off with a red blinking light. the green light with no display means the transformer is not getting power.

Dec 31, 2013 | Denon Avr-1610: 5.1 Ch A/V Home Theater...

1 Answer

I have a JVC RX 554v Receiver when it's turned on I have no sound their is a mute auto light that's lit in the window....Tried changing the speaker wires with no results...

From the remote control only: Press MUTING to turn off the sound through all speakers and headphones connected. "MUTE" appears on the display and the volume turns off. To restore the sound, press MUTING again. Turning MASTER VOLUME or pressing VOLUME +/- also restores the sound.

Sep 01, 2011 | JVC RX-554V Receiver

1 Answer

I get an unlock display when I change to vid2 input. How can I unlock the input? Thanks

I had this exact issue.
I was using the digital 2 input for sound. (Toslink cable from my cpu).

It seems I inadvertantly muted the sound on the pc, and this caused the "unlock" message with the L-R speakers flashing on the display.

I restarted my pc; and then unmuted the sound.
3 seconds later; the L-R stopped flashing and I now have sound on Vid2.

Jan 04, 2011 | Harman Kardon AVR 635 Receiver

1 Answer


From the remote control ONLY:

Press MUTING to mute the sound through all

speakers and headphones connected.

"MUTING" appears on the display and the

volume turns off (the volume level indicator goes


To restore the sound, press MUTING again so that "OFF" appears

on the display.

• Turning MASTER VOLUME on the front panel or pressing
VOLUME +/- on the remote control also restores the sound.

Dec 22, 2010 | JVC RX-778V

1 Answer

My volume and mute button has stopped working all other buttons are functioning properly

Press the mute button and then turn up the volume button. If no sound still then press the mute button again. If we are talking about a Remote, then change the batteries.

Apr 08, 2010 | Audio & Video Receivers

1 Answer

Friend turned volume up.. now display/volume died no sound

Sounds like your friend burned out the power amplifier. That would be the only reason none of the channels work. Unless the unit was muted by accident and no one checked the mute function - though I doubt that.

Jul 04, 2009 | Denon Audio & Video Receivers

2 Answers

Mute button wont turn off

HERE is your manual in PDF format.

This unit doesnt have a volume mute function.

What are the problems you are experiencing.

If it says Mute or ATT on the display - it is the cellular mute function turning off the volume for an incoming call.

Page 34 details turning on and off the cellular mute function.

You also may try a hard reset by removing the face, and pressing the reset button.

Thanks for using FixYa - a FixYa rating is appreciated for answering your FREE question

May 06, 2009 | Audio & Video Receivers

1 Answer

Onkyo TX-SR605 7.1 Channels... Problem

firmware up date go to onkyo homepage

Apr 01, 2008 | Onkyo TX-SR605 Receiver

2 Answers

Yamaha RX-V793 flashing light on volume control and no volume

Per Yamaha support page: The volume light on my Yamaha AV receiver is flashing, what does this mean ? The "MUTE" function on your remote control has been activated. The reason that you can still hear a very low sound is that the muting circuit within your stereo is not a full mute, but rather a -20dB mute. To deactivate the "MUTE" function, simply press the "MUTE" button on your remote control. (Make sure the volume control is turned down to avoid damage to your system.) If you misplace or lose your remote control, you will have to purchase a new remote control unit, as there is no duplicate function on the front panel of your stereo. Unplugging the stereo will not deactivate the muting circuit, as the microprocessor "remembers" if the muting circuit was active prior to being turned off or unplugged. If you need to purchase a remote control, you may order one directly from our parts office. You may reach them by dialing (714) 522-9888 from 8 am to 3 p.m. Pacific Time, Monday through Friday. If you have any other questions, please contact our customer service department by dialing (800) 292-2982 Monday through Friday from 8:00 a.m. to 4:00 p.m.

Sep 03, 2006 | Yamaha RX-V793

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