Question about Yamaha Portable Keyboard

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I have a w7 keyboard ,given to me free,but with no owners' manaul,when I plug in amp there was no sound coming out I do not why?

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  • 5,603 Answers

There should be a headphone jack... try headphones first...

If no sound from the phones with the volume control up, the unit MAY have lost settings due to depleted memory battery.

Look on the web for "factory reset" procedure for the W7.

Posted on Sep 14, 2010

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Posted on Jan 02, 2017

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1 Answer

I was just given a Kustom Sienna 65 Amp and it powers up but no sound coming out of speaker. I plugged a line from the ext speaker 1/4" out into a practice amp and got sound through the practice amp.


You may have a blown voice coil in the speaker. Can you see the back of the speaker? Then, First Check the connections to the speaker and make sure they are well connected. If they are, then the speaker is probably at fault. If you are handy, then you can get a replacement speaker, 12 inch?, and swap it out.

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Why there is no sound when i turn on the keybord?Display is ok.


Check with a small speaker or amp plugged in the back. If you can hear it then the jack in the back is probably not making contact. If no sound comes out there then the Audio Amp or it's circuity in the organ is more than likely to need repair.

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Check the output socket for corrosion, this would stop the sound from getting to the amp. Plug in an output cable and wiggle it around to see if it works intermittently. Plug it in and out a few times and see. We are looking for a dirty connection.

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I just bought a Behringer K3000FX amp and it sounds GREAT with my keyboard. However, just bought a Shure SM48S voice mic and it just doesn't come thru the amp with much volumn...have to turn amp


Greetings! Ok, your amp has an XLR (3-prong) Low-Impedance input on Channel 1 for a Mic. All the other inputs are 1/4" High Impedance inputs, which are for instruments and/or other High Impedance items including low quality High Impedance Microphones. The SM48S is a high quality Low Impedance microphone, so if you use it with a 1/4" plug, it will be in a High Impedance channel, and will be very LOW in volume in comparison with everything else. So, you must use an XLR (3 prong) cable from the Mic to the Channel 1 input on your amp. That will do the trick. Good Luck with your new amp and Mic!

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It sounds like to me that you blew the speaker. We here at Pro Line Music are Peavey dealers. If you can not check for continuity of the speaker you can bring or send it in. 215-736-8055

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The amp power light comes on but there is no power / sound .


Do some tests: Plug a set of headphones into the line outs and tell us which ones if any have sound. Note that only one side of the headphones may have sound and it may be low volume. We need to know if anything is coming fromt he preamp. Makesure the output switch is set to one of the speaker on positions and not just phones.

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I have a very loud hiss/buzz sound coming from my Roland. It goes away if I lower the high volume knob. This just starred to happen recently. I tried changing connections from ch1-4 but no fix.


If this ties to a keyboard, make sure the keyboard and this are BOTH plugged into the same receptacle. You should send a higher level from the keyboard (turn volume up to around 70% or so) and use less volume at the input gain of this amp. Use more at master volume if the amp has one if needed. If the hiss is there with NO input cables plugged in and input gains at 50%, that is objectionable, the amp probably needs servicing. Unused channel gains should be clear down.

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1 Answer

Neeed to restore my Yamaha W7 to its original tuning


http://www.yamahaforums.co.uk/modules.php?name=Forums&file=viewtopic&t=1554&start=0

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1 Answer

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I'm looking for parts for the Yamaha W7 keyboard.

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