Question about Yamaha RX-V690 Receiver

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No output - After powering on, the normal momentary delay occurs and I hear the relay kick in. - Muting and canceling mute to ensure muting was off. - All front panel and all remote functions are working (radio tuning, DSP, etc.). - Selecting front and/or rear speakers does not matter. - No headphone output - Removed the three fuses and all ohm out ok. - After powering off for a while, the unit sometime produces only static output to the speakers, most times it does not. - Tried all inputs from CD, Tape, Aux, VCR1, and LD/TV (cable/dvr), all of which were previously operating fine. - No components appear to be burnt, etc.

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Re: No output

If it's anything like a few I have in the shop here, It a selector / preamp IC that routes the input signals to the amps thats gone buhbye

Posted on Jan 14, 2009

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Re: No output

If the board is not cracked , check voltages at the audio output relays. on the input audio terminals side of the relays ,if you have voltage you may Have bad output Ic's

Posted on Jun 29, 2007

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I have a sharp aquos tv model lc32d6u, we have lost the audio, we have tryed turning the set on and off, nothing. we are serviced by Comcast and it is not the box. I can hear a small click when we turn the...

Try this
1. Power off both the TV and the DVR.
2. Plug in the HDMI cable to both units.
3. With the DVR off, press and hold the power button on the unit until the word BOOT appears on the display.
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Jun 28, 2008 | Sharp Audio & Video Receivers

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I have an old Technics SA-GX300 receiver that works fine except that the screen indicates that muting is on (still produces volume but at much lower levels). I lost the remote to the receiver. Is there...

Reliance on the remote instead of walking across the room to touch the unit will not solve anything. On many receivers, Muting is cancelled if the volume knob is turned to a louder level. Try that.

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Jul 08, 2011 | Technics SA-DX850 Receiver

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Why does my pioneer vsx-d557 automatically go into MUTING WHEN I turn it on?

Maybe you have MUTING selected. Turn the volume knob up or toggle the Mute control on the remote.

If it defaults to muting on power up find the manual and search it for a default volume setting.

May 15, 2011 | Pioneer VSX-D557

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The mute light Is on and the radio won't play. But if we play It threw the did player it works. How do I get the mute off for the radio?

If the MUTE is right next to the TUNED, it means the FM is muting inter-station noise until you tune a station strong enough to produce good audio. This has nothing to do with speaker MUTING.

Find FM Mode (page 14) and change it to Mono. Then you will hear the noise between stations until you find one strong enough. Install an anenna (page 3) and you might get strong enough signals to return the mode to Auto.

Jan 17, 2011 | JVC RX-558V

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Alright for some reason my receiver is muted but i don't have the remote to fix it and there isn't even a muting button. So i've been wondering how to fix it.

It's muting out because you have a problem with one or both output transistors. Somehow they got shorted out. My speaker wires came loose and crossed blowing the outputs. I'm sure it's repairable but with an amp this old you never know what else burned up down the line. It was a great amp but because of its' age I thew it away.

Dec 22, 2010 | Optimus STAV-3770 Receiver

1 Answer

Auto muting on when on am/fm and no sounds come out. everything else is fine.

That's normal.

The Auto Muting mode mutes the audio output of the tuner if the station is not sufficciently strong to be accurately tuned. Otherwise you would hear all that interstation hash noise.

Press the FM Mode button to change it to Mono if you want to manually tune a hard-to-reach station. It will be in Mono.

Page 26:

Normally select this.
When a program is broadcast in stereo, you will hear stereo sound; when in monaural, you will hear monaural sound.
This mode is also useful to suppress static noise between stations. The AUTO MUTING indicator lights up on the display.

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1 Answer

Muting engaged on power up

This not muting, but protect mode. This means that a problem was detected internally and the unit has shutdown to prevent further damage. The most common cause of this is a failure of the output transistors. Expect a parts cost inthe $20-40 range for this repair.


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1 Answer

Nakamichi AV-10 loud thud from subwoofer

I don't know the design of this reciever, and do not have any schematics or engineering information to know the design.

This is a general comment:
In many of these recievers at this level they don't have very good muting designed in to their system. When switching sources, the audio is not being muted.

This is a theory of why the noise is not on the main speakers, but present on the sub woofer. Because the switching noise is of very low frequency, this is why the sub woofer is making noise. The main speakers lack the low frequency sensitivity that the sub woofer has. This is one way of looking at it. It is also possible that there is muting for the main speakers, and none for the sub woofer.

If the reciever does have muting in to its design that is supposed to mute when switching modes, then there is an obvious defect. When a source is switched, or a mode is changed, the output would mute for the duration of the switching interval. This is usually for a period of about 100 ms.

Your best bet is to contact the service rep for nakamichi and ask the question there.

I have serviced many recievers made by other manufactures. The higher end models all had muting in their design. This way, the output was muted when the source was changed, and when the reciever was turned off or on.

Jerry G.

Apr 23, 2008 | Nakamichi AV-10 Receiver

1 Answer

Muted Sound

What is the signal level at the tape-out jacks? Is that level "normal"?

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