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Won't turn on

It's plugged in but no sound

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How to get sound from a nady audio 4130 mpm 4 channel power mixer


First, plug it in. Next connect the speakers. Center all eq controls both master and channel. Turn off any reverb or effects. Turn the master volume 1/2 way up. Plug a sound source into channel 1 wiyj the channel volume all the way off. Turn on the amp. Slowly raise the channel volume until you heat output. If you get nothing, it's broken.

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Has the unit ever had another ac adapter plugged into it?

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Both sides of my headphones are outputting sound however music that is supposed to be left isn't outputted at all. That is, if a song has instruments playing on the left side of the track, it won&


Are you using the 1/4 inch adapter- if so- make sure the mini plug is fully seated- you should feel 2 detents as you push the plug into the adapter- if you do not, you may be bridging the tip and ring colar with one channel and because it is not seated fully, it is not contacting the other channel at all.

Also make sure the plug for the headphones is fully seated into whatever device you are listening to. you should feel the 2 detents each time.

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1 Answer

Sustain pedal does not work


Yamaha FC4 and FC5 sustain pedals are normally closed, sorry Fred. Roland is opposite. I suspect the P120 just needs to be reinitialized. Hold down top white key (C) while turning on power. Wait 3 seconds and then release white key. Should now be reset to factory spec. Always plug the pedal in before you turn it on. If it still doesn't work check it with a meter.

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The "PROTECT" light indicator came on and now the


The protect light generally comes on when the is a short in the speaker cabling. as a test, turn on the mixer without any speakers hooked up. If it still goes into protect mode the problem is in the mixer. Take it to your local music store and have their tech look at it. if it doesn't go into protect, check the speaker cables by plugging them in one at a time. The bad one will send it into protect.

good luck

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My amps won't turn on. There are 8 amps plugged into individual boxes but they are controlled by one switch on the sacr


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1 Answer

The CD input on my Ampeg BA 115 works, but the 0db and -15db inputs don't. This happened immediately after using the CD input. Quick fix, or repair shop? Thanks.


Hello,

Sounds like a repair shop job to me. Inputs on a amp have resistance thus there must be a issue inside hence 0DB to 15DB if you go higher well that input thus would not work anymore.

Repair shop would be your best bet for this amplifier. Quick Fix would be unplug it and plug it back in and praying it resets but that won't happen.

hope this was of some help, if not I am sure others will chime in with there 0.2 cents.

Regards

Rulds2008

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1 Answer

Is there a fuse in this amp? is it replaceable without soldering?


Hi, blowing a fuse in an amplifier is a problem that most guitarists face at one time or another. If an amp won't turn on, or it turns on for a second, then makes a popping sound and turns off, the problem is usually a blown fuse. Though a blown fuse can be a hassle, especially during a performance, it does not have to put a stop to your musical enjoyment. With a spare fuse you can be back jamming to your favorite tunes in no time flat.

Things You'll Need

Fuse.

Instructions

Turn off the amplifier and unplug it from the wall.

Locate the fuse, which is usually found at the back of the amp. The fuse will look like a small black wheel sticking out of the amp with a number and the letter V next to it. For example, 9V.

Gently turn the fuse counter-clockwise to remove it from the amp.

Discard the old fuse.

Insert the new fuse into the empty fuse slot and turn it clockwise until it is firmly in place.

Plug in the amplifier; make sure the power switch is in the off position.

Turn the amplifier on to make sure the new fuse is working properly.



Hope it helped..

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1 Answer

I have a Marshall MG100DFX. I turned my amp on a few days ago and I heard this loud sound (not the standard hum/buzz that you hear when you plug a guitar into an amp; it sounded more like a foghorn). Now,...


I would try hitting the side of the amp before turning it on. There may be a loose piece of solder or other conductive particle stuck somewhere. Bang the cabinet rather hard with your fist. If that doesn't help it might be a loose solder connection at a resistor or capacitor but a tech should check that out.

Dec 04, 2010 | Marshall Mg100dfx 100-Watt Combo Guitar...

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