I have output on the headphone jack, but not the main speaker outputs. Any ideas for troubleshooting? Does the two wire lead coming out of the same back panel location as the input lead have any effect on output?
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Re: no output from main outputs
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.
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Phone output jack connector, this kind of connector acts as a switch that when you have your earpieces connected the speaker is automatically disconnected, and when you unplug your earpiece then the speaker activates, so there's your issue.
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.
You could use this amp as effectively 2 separate mono amplifiers - using one channel to power the monitors and one to power the main speakers.
Alternatively you can run the amp in stereo connecting one set of speakers to the neutrik outputs and one to the jack outputs. In this case the amp output will be shared equally between the two sets of speakers, which are in parallel, and the combined impedance must be not less than 4 ohms.
At this point, I would be looking at the main power suply for the final output stage. You may be attempting to drive the output with the driver section rather than the final amp stage. The center pin of the output transistors should have B+/B- on them. Measure that to ground and report the value here.
If you can't hear any sound from the headphone output, and by sound I mean a hum with the volume turned up, then the amp has either got a faulty internal power supply or the main amp has failed. Try looking inside to see if any fuse has blown. Also look around to see if you can see or smell anything has blown.
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?
bring an spray contact cleaner from radio shack near you and apply it in the place where you put your headphone jack and insert the jack in----out many times and check.---if it does not work try another headphone from good brand.