I have lost output to one speaker but get both channels on headphone socket. Switching input wires has no effect but when I press mono button I get sound from both speakers.
This is only happening on Phono input everything else works ok.
Sugden A28 amplifier
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Re: loss of one channel to speaker
When you say switching input wires you mean your source? that you switch it? you only have switch problem, it is mechanical type swutch need to clean only, if still possible. i dont know if you can find replacement.
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May not be serious,first with good channel playing move all controls and switches on the amp,Dead spots can occur on controls especially if they are rarely used.balance controls,tape monitor switches etc so work them all.If fault doesn't clear try headphones,switched sockets can cause problems.next swap input signal leads,left to right. and if still no good try swapping over speakers left to right.STILL no sound? its the amp.Time for tools and a test meter.You can look for blown fuses but its never a good idea to replace a blown fuse without testing the circuit first.may cause further damage and put up the repair cost
The fact you have output from the headphones is a good sign. It shows the main amp is working fine. However water has clearly got inside something and affected it. The best course of action is to trace back the wires from the headphone socket and see if there is a relay or anything that could get water in it. If you do find something, try applying warm air from a hairdryer. The alternative is to apply a soldering iron to the solder conections of the device. This should get rid of any water inside. If all else fails you might have to replace the relay. But I would try a spray of Servisol first. Just in case some dust has got inside or mineral salt from the water.
Hi Dave ok,you go out of comp(this can be headphone OR audio out on your laptop),into mixer (audio inputs,)then go out of mixer (audio out) into input channel on your amp ,the speakers are obviously already wired up to your amp?
apply a spray contact cleaner in headphone socket(the place where you put your headphone jack)-and insert the jack in and out many times because it maybe problem inside-check your speaker cable for good condition.and firmly connected.
I don't know this specific system and you haven't mentioned whether you have just installed it or whether it has only just started causing problems but did work ok before?
However, there are a few things I would look at. I would also check the system right from the input bit by bit to see whether the problem is an input or output one.
1) Completely isolate the amp from all other equipment and connect a signal source to the left input only and then the right input only. If they sound much the same, the amp is probably ok. If they don't then the amp is probably faulty.
2) Check whether the monitors and amp both have weak output on the left channel.
3) Check and balance settings.
4) Check the speaker phasing.
5) Check all the interconnections, plugs and sockets. You could squirt some switch cleaner on a rag then wipe all the plugs before putting them back in the sockets.
6) Check the Behringer VU meters and make sure they indicate a reasonable balance on both channels.
7) Check that the channels sound ok when using headphones.
8) Check all faders and sliders by moving them vigorously to clear dust from the tracks. (Not applicable if digital, of course)