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Playing music and 1 channel cuts out

I use the receiver and every once in a while the left channel stops working. i give the unit a tap and it comes back in. Bad connection i guess? fixable?

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  • 344 Answers

The output transister is going on it, Min $100 end up to have repair,

Posted on Nov 28, 2012

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Posted on Jan 02, 2017

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SOURCE: Onkyo TX-28 Receiver Output Problem

You may be confusing +/- power supply rail fuses with left and right speaker fuses.

Posted on Sep 03, 2007

  • 17 Answers

SOURCE: Kenwood Receiver KR-V127R - left channel not working

Select an input that is not connected, for example select CD with no cables going to the CD input on the backside. Will you then hear equal humming on both channels? If so, the amp stage is ok,
and the problem lies in the signal level circuitry.
Open the cover and use a plastic (insulated) stick to touch suspectible cables and components. When the sound returns, you've found the cause. Resolder or reseat the component/cable/card.
Use the insulated stick, NOT your fingers!

Posted on Jan 01, 2008

  • 2 Answers

SOURCE: Stuck!

I was able to fix this issue by opening up the receiver, removing the circuit board that the power button and speaker selector knob contact, and then reseating that board back onto the circuit board it was connected to (the one with the majority of the control buttons).  This completely resolved the problem.  The power button works again and the audio does not drop out anymore.

Posted on May 16, 2008

  • 4234 Answers

SOURCE: I have a sa-gx770 techniques

There are bad solder connections inside the receiver that are causing the protection circuit to kick in. This is a simple resoldering job and should only cost the labor rate at a local service shop.
Dan

Posted on Jun 02, 2008

  • 5 Answers

SOURCE: Technics SU-G90 Amplifier from the

because bad connections, probably in the driver section of the endstage, dc current apears on the output and shuts down the output through the relay.
info@lustinvest.nl

Posted on Aug 25, 2008

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1 Answer

Left channel cuts out, if i tap the reciever it will come back on.


sounds like the controls are dirty...or possibly the solder connection on the volume control has become intermittant...you can goto your local electronics store(or Radio Shack) and get some contact cleaner..open the unit up and clean the volume control as per the instructions on the can...make sure when you spray the cleaner into the control you turn it back and forth several times...then you want to spray more in to flush out whatever debris may have been in there...be careful not to get any on the face plate as it may damage the finish...also , make sure that the chemical spray that you use is safe for plastics...If this doesn't fix it , then the volume control assembly may need to be resoldered.

Mar 01, 2012 | Sony STR-DE185 Receiver

1 Answer

No sound from front left channel


Hi, here is a procedure to discover the source of the problem. No sound from the left front channel can have several sources other than the left front channel itself.
Let's assume, for just now, that the speaker is good and the cable to it is good.
Here is a testing sequence to follow:
1 If you have a CD player connected to it. Put a CD in and put it into play mode.
2 reverse the connectors from the CD player to the receiver. See if the sound moves to the left speaker and stops on the right speaker. Or if it plays fine.
3 If the sound reverses channels, That cable is bad. Replace it
4 If the sound is still not coming from the left channel. Check the connections and cables to the speaker. MAKE SURE THERE ARE NO STRANDS OF WIRE TOUCHING THE CHASSIS OR SHORTING TO THE OTHER SPEAKER WIRE.
5 If there were. Correct it. Shut down the receiver and then after a few minutes turn it back on.
6 If it still does not work. check to see if a tiny amount of sound is coming from the left speaker.
If so, turn the music up and see if it pops back on . If that is the case there is a failed resister on the circuit board that is arcing when you turn up the volume. That being the case, it is time to drop off the receiver to be repaired in the service center.
Hope this helps,
Best,
Mark

Jan 04, 2011 | Harman Kardon AVR 330

2 Answers

I am playing Cd's and have a pair of Definitive Technology- Model BP-10 tower speakers connected to my Technics SA-DX1040 5.1 Channels Receiver and while the music is playing, all of a sudden the music...


There are 2 major possibilities and since you didn't say if the sound comes back here's the general split.
1. The power amp section could be having problems and/or protection circuits are kicking in. In this case repair of the amp will be needed.
2. There is a bad connection somewhere making the audio path go bad. In this case a good can of contact cleaner applied to all switches and controls may help. If not, the bad connection may be internal. If tapping (or rapping) on the unit makes it come back, there's probably a bad internal connection.
If letting the unit cool down brings back the sound, its the power amp section.

Dec 27, 2010 | Technics SA-DX1040 Receiver

2 Answers

Problem with Airport express to BOSE Lifestyle


When i play the radio on my bose lifestyle , my radio sounds good. but when i send music with from my apple computer to . airport, and then to my bose lifestyle, the sound just come out from on 1 speaker. not the toher ones, but when i play radio all 5 works....

anybody got a solution??

Alex, Sthlm

Jan 20, 2010 | Apple AirPort Express with Air Tunes

2 Answers

INSIGNIA TV WITH ILIVE BAR. 1 SIDE WORKS


Try swapping your cables from the sound-bar to the TV. If the sound still only plays through one channel but the channel has changed from right to left or vice-versa, then you have a bad cable.

If the performance is the same, connect a different device using the same cables to see if it's the sound bar input or the TV output.

Once you know where the problem is (the sound bar, the TV, or the cables) you'll know what unit needs repair or replacement.

It is entirely possible that a solder joint for the sound-bar has come loose. A soldering pen would easilly fix this if it's a bad joint/connection.

Hope this helps!

Dec 25, 2009 | Insignia 200W Stereo Receiver

1 Answer

Suddenly, amplifier stopped giving out sound. Controls and display seem to work fine. If it is blown fuse, where is it & how can i replace it?


Does it stop on both channels? It sounds to me like the safety circuit is activating. This usually happens when either the volume is too high, or the speaker load is too great (i.e. usually loads less than 4 ohms will do this) or, the amplifier has an internal short causing the amplifier's output stage to become un-balanced. Does the sound come out nice and clearly through both channels? How long does the receiver play before the sound stops? How loud are you playing the music when it stops like this? If the sound is reasonably clear through both channels at regular volume, then there is probably nothing at all wrong with the receiver's output circuits. If the amplifier is being played at regular volume or even lower volume for quite a while and then quits, perhaps the receiver is getting too hot and it's thermal sensors are activating the protection circuit. Make sure that when you operate the receiver, that there aren't things laying on top of it blocking the unit from venting and cooling properly. Make sure it has plenty of breathing room - amplifiers (most of them anyway) are inherently subject to producing heat. If the amplifier only quits when played at high volume, well then that's probably the problem - it's probably not meant to deliver such power that you're asking it to - especially if you're driving a heavy load such as 4 ohms or less. If you're running several speakers on this unit, try scaling back to just two speakers for now, and make sure these are 8 ohm speakers. Play the unit for a while and see how it does.

Oct 24, 2009 | Aiwa AV-DV95 Receiver

1 Answer

Problems setting midi channels using KN3000 and Cubase


If you are sequencing midi tracks you can imbed the patch change in the track and the midi channel assignment and when the sequence plays the info will be sent to the keyboard. Do you have it set to receive Omni?

Apr 23, 2009 | Music

1 Answer

Speakers cut out.


"Tapping on the unit" is the salient point that prevented me from thinking that it was a speaker impedance issue. That would indicate a solder connection problem. Unless you are qualified to work at the component level I would take your unit to someone who is as it may destroy the amplifier eventually. Steve Medley

Jan 26, 2009 | Audio Players & Recorders

1 Answer

Reduced audio output from right channel


Try lightly tapping on chassis to see if you can get audio to cut on or off with vibration if you can most likely cause is bad solder connections. This unit is well known for poor solder connections especially around poweramp driver IC's IC701, IC501. Also Electrolytic Capacitors in unit have fluid in them and heat Evaporates the fluid causing them to not operate properly over time . Caps that usually go bad are around parts that run hot like Power amp drivers
Just a couple likely suspects.
Try unplugging overnight to give unit a Good Reset also double check all setup settings.
If you need service manual I may be able to get you one
kstahl65@att.net

Jan 19, 2008 | Sony STR-DE545 Receiver

1 Answer

Sound not coming from left side surround sound speaker or my right side front speaker


it is highly likely that you're TV is outputting mono sound, hence the left channel only. check your physical connections to the TV and the balance / channel volume on the television as well.

May 01, 2007 | Onkyo HTR500 Receiver

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