Question about Optimus STAV-3770 Receiver

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Stav-3970 receiver puts out no sound regardless of inputed component.

I have no sound coming out of my stav 3970 a/v rec. is there anything i can do to double check if something is wrong, the speakers work tested them.

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  • pietro6111 Dec 15, 2008

    i have the same problem my stav- 3970 has no sound regardless i´ve had change the IC power output. can any one help me with a schematic for this model?



  • Anonymous Mar 25, 2014

    I have an Optimum 3570 receiver. Yesterday the sound from my speakers went very faint. I turned the volume all the way up and I can barely hear the radio, or the Record player. How do I trouble shoot it?


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The audio amplifiers ICs are damaged .

Posted on Apr 24, 2008

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Why rca stav 3970 sound starts at -60

It is a system default setting. You can change the volume setting with your channel presets.

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Front Speakers stopped working

turn on your video and start something playing, press the speakers button repeatedly until the sound comes back. this should bring back your front speakers, if it doesn't, double check your speaker connections and sound field program.

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How to connect receiver to TV for sound

Does the TV have an audio ear phone jack? if it does get an audio jack that fits the TV Audio out Phone plug. Then connect it to an Audio Amplifier that would run the speakers.
This is one way...or you can solder onto the speaker weirs and run that to the audio amp that is connected to the wall spekers.

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Check out this link for a possible solution or cause of the problem:

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Use a set of Bose speakers. The wiring goes from the speaker terminals on the amplifier to the sub. the right and left speakers connect to the sub.

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Multi room speakers stopped working. Settings correct and verified; professional installer verified speakers and wiring is good. The receiver is working fine otherwise. Any suggestions?

One of those things that were tested is not right. You'll need to do a process of elimination. First try connecting one local speaker and see if you actually are getting output. If not then you know the problem is with the receiver or connector.

You can also hook up something else to your multi-speaker wiring and see if it works through that wiring and speakers, ie a tv or anything that can use the same kind of connector you're using.

If you get sound out from something else then again you know it's with the reciever, either a problem with the settings or the unit itself.

Obviously you can also double check the settings too and make sure they are right.

It has to be one of those things, a connector, wiring, a setting or the unit itself.

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Denon AVR-3805 zone 2 no longer working

time to reset the microprocessor. See page 87 in manual.
1) switch off the unit using the main unit's power operation (small power button)
2) hold the PURE DIRECT button and DIRECT button at same time and turn the main unit's power operation on.
3) wait for entire display to flash in 1 second intervals

now the speakers need to be set up again but zone 2 will be working. i suspect a power surge causes the microprocesser to be corrupted. i put a power surge protector and have not had problems (lately).

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