Question about Yamaha RX-V757 Receiver

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Reciever turns itself off

Reciever will power up for 1-2 seconds, then turns off. I have diconnected all outputs to check for possible grounding but the reciever still will not power up.

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Try cleaning it out, get all the dust out of it if not , you may have some screwed up capacitors or transformer

Posted on Jan 02, 2009

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Kenwood vr606 reciever shutting off subwoofer and centre speaker simultaneously after few minutes/seconds of powering on. WHat's the cause?


The receiver's out put sections are grouped in pairs. Front left and right in one output, rear left and right in second output, and center channel and sub output on the third. Sounds like a semiconductor or semiconductors have gone bad in the center & sub output.

Nov 19, 2015 | Kenwood VR-606 Receiver

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Interior lights


This is both a courtesy and safety issue on many high end vehicles. The light from the interior lights can cast enough light to get to front door and possibly show dangers in your path. And after first getting into you car and starting it, you can check the back seat for any unwanted hitchhikers. As for the 10 minute timer, I don't know if this can be adjusted. A Chiltons/Haynes repair manual for you car may have that answer, or, the Buick dealership shop foreman. Best of luck.

May 31, 2015 | 1998 Buick Park Avenue

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Reciever keeps yurning itself off after a few seconds


Assuming running from a cold start,

it means protection circuit are activated.


If it runs hot, then turns off then it is thermal cause.

Simple solution could be disconnecting all your speakers

and power up.

If it runs OK, then reconnect one at a time to find the cause.


If disconnecting the speakers doesnt do anything,

these unit needs repair.


Start checking out power supply

Check the supply rails to the main amp ( B+ and B-)

and most important , check for DC offset voltage on all amp outputs.


Let me know if you need further assistance!

Sep 27, 2012 | Kenwood Audio Players & Recorders

1 Answer

Reciever comes on for about 5 seconds then turns itself off.


That usually indicates that you have a problem in the output stage, most likely shorted output devices. That will cause it to go into shutdown once the protection circuit recognizes the problem.

Nov 28, 2009 | Denon AVR-2105 Receiver

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My sub has no power, ther could even be other problems i'm not aware of. so i would like to fix power first


Hiya, start by checking the power cable, then check the fuse in the unit on the pcb. If blown, replace and if it blows again then problem could be either Power supply or the amp outputs. If it doesnt blow, stays on but no sound, problem also likely to be output stage. You will need someone with experience to check outputs, etc and a meter though. Hope that helps a bit.
Best of luck

Jul 15, 2009 | JBL PSW-D110 Speaker

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AMP POWERS UP, I CAN HEAR IT WORKING BUT THE SOUND IS REALLY REALLY LOW...


Hello korre,

Low output could be the head unit, the speakers of the amp itself. Start by isolating the problem.

1) Test the sub(s) on a known good output.
2) Input a known good signal. A portable with RCA preamp outs will work OK.
After you have eliminated the other components, troubleshoot the amp itself:

1) Check the onboard fuses. The M605 has 2 each 30A fuses just to the left of the power and ground terminals.
2) If it was just installed, then my first suspicion would be a problem in wiring. If one tiny little strand of your speaker wires comes into contact with another wire or ground point, it could present just enough of a signal path to ground out most of your power, and perhaps still allow the amp to seemingly operate normally (at least for awhile). Check power and ground too.
3) Make sure your head unit RCA's are plugged into the inputs and not the outputs.
4) Check the low-pass and subsonic filter settings. If low pass is turned all the way down, the amplifier would ONLY send frequencies below 30Hz to the speakers. Subsonic turned on and the low pass all the way down would effectively result in no sound.
5) Remove the top cover to access the mode controls and display. Check the input level.

If everything checks out, the amp probably has a defective component and needs factory/service center repair.

Hope this helps.

May 06, 2009 | Alpine MRD-M605 - V12 MONO AMP 600WX1 RMS...

1 Answer

My Kenwood KAC-929 gets power but DOES NOT put any sound out. Whats My Possible problem(s).


Hello Spicer_kyle6,

Possible problems: 1) No output from the head unit. Try a different set of preamp outs. 2) No input to the amp. Check the RCA's and make sure that they are good and coming from a functioning preamp or subwoofer output on the head unit. 3) Input gain turned off or down too low. 4) Speaker wiring shorted, grounded, or open. Check all wires. 5) Speakers defective. Connect to a known good output to test. 6) The amp itself could be defective and still show a power-on indication.

Hope this helps.

Apr 28, 2009 | Kenwood KAC-929 Car Audio Amplifier

2 Answers

BOSE 901V WITH EQ PIONEER XSV -95 RECIEVER.


Turn down the second amplifier (which the speakers are connected to). This hum is the amplified 'noise' from the EQ and/or amplifier. Try using a much higher graded second amp (eq 500w)

Mar 21, 2009 | Bose 901 VI Main / Stereo Speaker

1 Answer

Any other suggestions...


make sure you have solid power and ground resistance (connections)
-jeff

Sep 02, 2008 | Digital Audio 2, CHANNEL 600 WATTS HIGH...

1 Answer

No sound driver


Turn the power off. Wait about 10 seconds,then power up again get close to the reciever and listen for a click-not from the speakers ,fromthe recievers itself.If you hear a click,you can assume that the power supply is ok for that cercuit.This does'nt eliminate the power supply,but it will do for now.Put the speakers close to the reciever,what you will do now is to power up the reciever while listening to the speakers with the volume off.In about 3-5 seconds you should a hear a slight click from the speakers. Try this with both speakers if you don't plug in a pair of headphones to the headphone jack and play the source . If you still no sound with headphones you at least now know that the output transistors are not the problem or the only problem.The power amp., section are defected also.Message whatever happens.

Jun 17, 2008 | Audio Players & Recorders

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