Question about Optimus STAV-3770 Receiver

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Muting engaged on power up

When powered on automatic muting is engaged and there is no mute button

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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.

Dan

Posted on Feb 04, 2010

  • George Franchino Feb 28, 2011

    I sure am glad I checked here! Much thanx to Abrsvcs for that explanation, saved me from going nuts. I inherited this one from my dad. He had it for years, don't think it's worth fixing. Dad smoked around it for years and it's kind of sticky to the touch, I can imagine what the guts look like..Thanx again, bud!

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Posted on Jan 02, 2017

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1 Answer

Unmute handset


Mute Microphone
With the handset
You can temporarily turn Off the microphone so that the person you are talking with cannot hear you.
1)Press menu/del during talk mode (while phone is in use).
2)Press ring/vol/? or ring/vol/? to move the pointer to Mute and then select/
.
Mute On and appear in the display. To cancel muting, repeat above step again when Mute
is set to on, Mute Off appears.
With the base
While using the base speakerphone, press mute on the base to turn Off the microphone.
Press mute again or press (speaker) to cancel muting.

Jan 01, 2015 | Uniden Lands Phones

1 Answer

Youtube's automatic muting.


I've heard this is a Youtube issue. If my download speed was fast enough to set the volume a week ago it should be fast enough today. I think everyone who recently upgraded software is having this same issue. YT needs to get on top of it because it is obnoxious.

Oct 05, 2013 | YouTube Computers & Internet

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Turn off mute


Most likely it is your Flash player causing this. Try the steps out lined here:
https://forums.adobe.com/message/4041846#4041846

This will update your Flash Player with a clean install.

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1 Answer

I just bought a used jvc rx9010. it powers up but no sound from any speaker and shows headphone all the time what should a layperson check???


No speakers are selected if just headphone is displayed. Press the speaker button just under the power button. No station is tuned when auto muting is displayed. Hook up an antenna to the receiver or use a different source like a cd player.

Apr 07, 2013 | JVC RX-9010V Receiver

1 Answer

How to get my unidendect60 off silent mode


Uniden offers a variety of electronics products including corded and cordless telephones. Each of these phones features the ability to mute the phone whenever you desire. Muting the phone can be done as often as you like and canceled as you desire. The steps to muting your phone will vary depending on the type of phone you are using.
b> Locate the "Mute" button on the phone. The button will be on the keypad near the number keys. Press the "Mute" button to mute the phone. Look for the "Mute" indicator on the phone's display to ensure that the phone is muted. Speakerphone Volume Use the VOL (+ or -) buttons to adjust the speakerphone listening volume while it is in use.

http://www.uniden.com/pdf/1380BKom.pdf users guide

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1 Answer

Restore Sony KDL32L5000 to factory defaults


• Check the input selection by pressing the INPUT button. You may be watching the wrong input.
• If you cannot hear sound from the TV, you may have accidentally pressed the MUTING button on your
remote control; press the MUTING button again or press VOL + to deactivate muting.
• If the remote control is not functioning properly, the batteries may be installed incorrectly or may be low or
an object or light may be interfering with the remote control.
• To reset the TV to factory default settings:
1 Turn on the TV.
2 Press and hold down the V button on the remote, press the POWER button on the TV set. (The TV
will turn itself off, then back on again.)
3 Release the V button when the TV is turn on.
WARNING: The factory reset will clear all of your customized settings including the Parental Lock setting.
When the Password is lost or cannot remember, enter the master password: 4357. This password clears your
previous password and allows you to enter a new password.

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1 Answer

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

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:

AUTO MUTING
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.

Mar 31, 2010 | JVC RX-D205 7.1 Channels Receiver

2 Answers

Hi, I have a NAD 3020 and usable volume has gone. You can still hear it really quietly even with the volume up full. Do you think this is a power transistor or a transformer problem. Cheers. Doug


It's a muting problem, not a power amp problem. The muting circuit on this amp has a very high impedance node, which makes it very sensitive. Right next to the area of the board that contains the muting circuit is a large-ish capacitor that is held in place by a blob of glue. The glue has usually spread out enough to reach some of the muting components. The glue decays over time and becomes slightly conductive. This is enough to keep the amplifier in the muted state, permanently, instead of releasing it about two seconds after power-on.
The picture shows the amplifier with the top removed. The box is where the old glue used to be. The glue is to hold the purple tubular capacitor steady. It is not really necessary unless you have the amp sat on top of your speakers (not recommended).
To remove the glue, unplug the amp from the mains, remove the lid (six screws), locate the area in the picture and scratch the glue away with a large needle or tiny screwdriver. The most important bit is to remove the glue from the bare wires at the ends of the resistors (the brown stripy things).
If this doesn't solve the problem, or it returns, the capacitor that determines the length of the muting period may have failed. This is a slightly less diy repair as you will need a soldering iron and a new capacitor.

nad-3020-usable-volume-gone-iiyf2avpegzihhblbzexa22w-1-0.jpg

Nov 08, 2009 | Audio Players & Recorders

3 Answers

Onkyo TX-SR705 Muting Problem


if what Dark_Orbit said does not work try doing a master reset by ressing and holding the dvr/vcr button and stand by button simultaneously. This would erase all your assignments so you would need to reassign all your sources hooked up to your onkyo.

Mar 04, 2009 | Onkyo TX-SR705 Receiver

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