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I have a second hand stage piano - roland a-90 and am unable to get any audio either through headphones or external speakers. I have never used this keyboard before and don't know if it is faulty or if i have just not routed it correctly. What things do i need to check ?

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  • candyroo1 May 30, 2008

    it turned out that local control had been turned off (edit codes E43 and E07) making the keyboard inactive and disabling the control of the voice expansion board.

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Make sure the unit is not set for MIDI operation.

Posted on May 27, 2008

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I just bought this Nakamichi SR-3A receiver and hooked up my speakers, but no sound? Please help!


USE HEAD PHONE JACK TO VERIFY INPUT (SONGS) USE KNOWN GOOD HEADPHONE TO LISTEN TO IT , ONCE YOU KNOW IT WORKS THIS METHOD THEN MOVE ONTO NEXT STAGE OF TROUBLE SHOOTING , CK'ING CONTROLS SETTINGS (SPEAKER PAIR SELECTOR , SOURCE CONTROL,ETC) SUBSTITE A KNOWN GOOD SPEAKER AND WIRE TO ONE SIDES OUTPUT AND TRY IT , OK THEN USE IT ON OTHER SIDE , OK THEN YOUR WIRE OR OLD SPEAKERS ARE NOT WORKIGN

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This could be just a faulty headphone socket. Unless the headphone socket has a built in pre-amp stage.

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My denon 3808ci reciver has sound out put when you connect head phones but nothing coming out of the speakers when the head phones are disconnected?


hi,
In all receivers when you connect the headphone it will swich off the speakers. Its normal. When you use the headphone there is no need for external speakers its the principle behind this. .
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The speakers are connected but still no sound product is rd6613 sherwood


As always, you should refer to the manual FIRST before coming here. That is where WE will usually start.

I presume you have proven the amps are dead by trying multiple sources, swapping a different speaker onto it and that the balance control is NOT all the way to one side; headphones don't work either and we're down to proving it's dead before you take it in to a tech, right?

There is the slighest chance that a common control may have developed a high-resistance or 'dead' spot and is causing your symptom. Turn the POWER OFF and operate every control throughout its range a number of times, especially rarely-used ones like Tape Monitors and the MUTE control.

If it still doesn't work you might want to prove if its a low-level signal loss or a high level amp failure. One way would be to run an RCA cable pair from the Tape Out to any other device (even a TV with speakers) you might have that accepts an audio input. If IT can't detect receive the DEAD Channel you're losing it in the preamplifying or source selection stages.

If it CAN be played externally, the receiver is losing it on its way to or at the amplification stage. Further isolation might require hands-on technical expertise.

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1 Answer

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You don't name the product but general advice may help.

I presume you have proven the channel is dead by trying multiple sources, swapping a different speaker onto it and that the balance control is NOT all the way to one side; headphones don't work either and we're down to proving it's dead before you take it in to a tech, right?

There is the slighest chance that a common control may have developed a high-resistance or 'dead' spot and is causing your symptom. Turn the POWER OFF and operate every control throughout its range a number of times, especially rarely-used ones like Tape Monitors and the Mute control.
If it still doesn't work you might want to prove if its a low-level signal loss or a high level amp failure.

One way would be to run an RCA cable pair from the Tape Out to any other device (even a TV with speakers) you might have that accepts an audio input. If IT can't detect receive the DEAD Channel you're losing it in the preamplifying or source selection stages.

If it CAN be played externally, the receiver is losing it on its way to or at the amplification stage. Further isolation might require hands-on technical expertise.

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I wanna hook my yamaha psr-190 to a laptop how do you do that


Read the manual...

Register and download the manual for free at retrevo.com

http://www.retrevo.com/support/Yamaha-PSR-190-Music-Keyboards-manual/id/961ci164/t/2/

Page 2. Your Sound Card is the "external amplifier/speaker system".

Or use the headphone output so it will disable the Keyboard's speakers while you listen to external speakers.

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I have a samaung pc/tv monitor,i use for pc and tv use,i have external speakers for the pc and would like to connect them also for the tv as the sound as is not very good,putting the tv menu in external...


Some actual model numbers would make this conversation more relevant.

If your PC speakers are self-powered they should accept the RCA output from any device that provides headphone or Line Level audio.

Where is the TV audio actually coming FROM? Maybe a Cable Box? THAT is where the PC speaker should tap in.

Many TV's have a Fixed or variable audio output. Fixed allows for disabing the TV speakers or turning its volume down without affecting the audio out to other devices.




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No output on right channel ofkr7050


"KENWOOD" KR7050?

I presume you have proven the channel is dead by trying multiple sources, swapping a different speaker onto it and that the balance control is NOT all the way to the right; headphones don't work either and we're down to proving it's dead before you take it in to a tech, right?

There is the slighest chance that a common control may have developed a high-resistance or 'dead' spot and is causing your symptom. Turn the POWER OFF and operate every control throughout its range a number of times, especially rarely-used ones like Tape Monitors and the Mute control.

If it still doesn't work you might want to prove if its a low-level signal loss or a high level amp failure. One way would be to run an RCA cable pair from the Tape Out to any other device you might have that accepts an audio input. If IT can't detect receive the Right Channel you're losing it in the preamplifying or source selection stages.

If it CAN be played externally, the KR is losing it on its way to or at the amplification stage. Further isolation would require hands-on technical expertise.

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I have a P-85 piano that I wish to connect to my HS-80Mmonitor. The only output for the piano is the headphone jacks which I expect is about 80 ohms impedance. The input impedence to the monitor is not...


Generally speaking of course, you would never direct the signal from an amplified output into a line level input, however with headphones the level of amplification required is so small that the signal will typically be even less what a line level input is expecting. So do you want to headphone output signal further?

Basically, if you connect a headphone output signal to a several thousand ohm line level input it will behave pretty much like a line level signal.

Therefore, I would try it as is first to see if your results are acceptable. The output level should range somewhere within what a line level range should be although you might have to turn the volume up more than you would have to if it were a line level out.

Just start with the volumes all the way down, then turn your monitor levels somewhere in the middle and then turn up the keyboard level and see how good the sound is.

You may be perfectly happy with the results, otherwise you could try a headphone amp, but be careful with the volumes

Here's a good article on this topic which should address any concerns:

http://www.sweetwater.com/insync/techtip.php?find=2000-10-26

Cheers,

bd.

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