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Amplifier Problem My amp is suddenly only sending signal to one of the speaker cable outputs. I have tried swapping cables & speakers around and this is definitely the problem. I have opened the amp up and there are no lose connections. Any ideas? Thanks, Dan

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Ok, I've seen this with panasonic, what brand do you have, to look for a problem unplug the amp turn the amp downword, open the butom cover, at were the back panel is, look for cold solder joint, if everything seem's ok then troubleshoot the ouput stage.

You will need the schematic for this, or go on goolges with the output ic # this will help to tell you what it is,

Regards

Bob the builder.

Posted on Feb 08, 2008

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Assuming you tested already different inputs, you can be sure no cable from signal source is out or defect. (or did you nit check that first?).
When the amp is switched off, disconnect the speakers and switch left to right and right to the left output.. If the other speaker is quiet now, you are sure it is in the amp. Still his can be anything.
You can check the connections between the pre and main amplifier on the back side. When you have an extra set of interlink cables, perhaps you can cross the in and output there too. Take care every time you change something, lower the voltage and switch off the amplifier. Sudden clicks when switching on or changing anything can damage the amp and or the speakers.

Perhaps when you checked this you can locate where the problem is? Speaker, speaker cable, power amp, pre amp, (only a part of the pre amp.

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Channels out of balance - remote will only change left channel.


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Hello, I am trying to plug my Mixer into my amp but only one speaker has sound..I am using a Rane ttm57sl mixer with technics turntables & cambridge audio azur 640a amp...I've gone from the Aux out on...


Why don't you try using the main outputs (the 2 XLR connectors). With 2 cables connect these two (left - right) outputs at your amplifier's aux in. In that case take care that the "output level" of the mixer works like master volume controlfor the signal that the mixer sends to the amplifier.

In case of a problem or clarification, don't hesitate to post.

Thanks and regards
Please kindly rate this solution
Stelios

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2 Answers

The amp makes overload protiction while no sound


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Nad c372 problem with left speaker output


Hiya, did you try to swop the inputs as well and see if the problem swops. Try that as the input could also be low. If so try change the cable.

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If thats not there then likely an internal problem and will have to send it in.
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PV 2600, couple years old, light usage. Connected to two PV SP3K speakers. One channel started to cutout somewhat but not all the way, Switched a few input cables, swapped L&R. Then whole amp shutdown....


Hi..

I've worked on similar units.
Things I'd check first :
Dust in the unit.
Weak solder connections /crusty debris stuff on the input jacks or output terminals
Any flex cables soldered in tend to be a problem on peavey amps I resolder all those contacts.
Checking the amp w/o a load IS NOT a good suggestion.
What style output connections are you using?
1/4 inch, binding post, or Neutrik style?

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1 Answer

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please check first your input source and confirm it is ok.-check speaker button is pressed(if you have one)-speaker cables are connected firmly-from amp side and speaker side-check mute button(also if you have one)is not pressed.-make reset for your system(power off and on).
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if you did test for your cable and speaker and you find it fine-your problem will be in output stage of your amp and needs aid of service center.

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