My PSR-275 Yamaha is out of tune

by Jimmy
(NY)

First of all i din't even know that electronic pianos get out of tune.

But i've been playing along with pianists online and it seems out of tune(maybe slightly). It's bothering me so is there someway to fix this.

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Aug 22, 2009
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PSR 275 Out of Tune
by: Alfred

Dear Jimmy: If your unit has a TRANSPOSE feature , you may have inadvertently changed the original factory setting and will have to INITIALIZE the keyboard. I can assure you electronic keyboards "never" go out of tune. Good luck!

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Sustain pedal backwards - PSR 275

by Mary
(Michigan)

The sustain pedal works opposite of a real piano. On the prs 275 as soon as you plug in the sustain cord, everything is in automatic sustain, constantly. When you press the pedal down, sustain gets turned off. Just the opposite of the real piano, where you push it DOWN to get the sustain, and you lift it up to stop sustain. Is is just my keyboard or all Yamahas like this. Is there a setting I can change so that I'm not always in sustain mode?

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Jun 16, 2009
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Sustainpedal
by: Dick Rector

Hi Mary,

I am not familiar with your model keyboard but yes, a setting is wrong and you can change the 'polarity' of your sustainpedal with just a few pushes on the right buttons. That will reverse the sustain to a normal piano-type.
You have to look under 'functions - footpedal - sustain on/off' or something very similar. You manual will tell you what to do. If you don't have a manual go to - psrtutorial.com - and you can download one in PDF format.
Good luck

Dick Rector
Bali

Jun 17, 2009
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Sustain Pedal
by: Alfred

Try inserting the Plug of the Pedal into the keyboard BEFORE TURNING ON THE POWER.
DO NOT PRESS THE PEDAL WHILE TURNING THE POWER ON.
When you follow this procedure you automatically ensure correct standard practice. What I believe is happening. is your keyboard is recognizing a "Reversed Polarity". Post a comment if my suggestion helps.

Jun 19, 2009
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Sustain pedal
by: Drawbars

Mary --

First thing to do is look carefully at your sustain pedal. Many of them have a polarity switch (even if not labeled as such). Flip the switch and you're good to go. If your sustain pedal doesn't have such a switch, you might want to swap it out for one that does; they're not that expensive.

Aug 15, 2009
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How to fix backwards pedal
by: Paul

I had the exact same problem with my Casio keyboard and a Yamaha sustain pedal I bought

I'm not an electrical genius, but I was able to get it to work by opening it up and doing a little modification. Of course I first just tried switching the white wire with the black one but that didn't change anything at all when I tried it. It turns out the Casio wants the circuit completed to sustain, and broken for no sustain, which is the opposite of what the Yamaha pedal does.

I opened it up and mine had three three flat metal strips let's call them Top, Middle and Bottom. The Middle and Bottom ones were joined together on the right side, and the Middle and Top ones were touching on the left side when the pedal was not pressed. These seperated when the pedal was pressed, thereby breaking the circuit because the wires were on the top plate and on the joined Middle/Bottom plate.

So to flip it I:
1. Unsoldered the Bottom wire
2. Cut apart the Bottom and Middle plates.
3. Bent the Middle plate to touch the Top plate instead and soldered those together
4. Soldered the Bottom wire back on.

That's it! Once I figured it out, it took only a few minutes to fix.

Good luck!

Oct 29, 2009
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i have the same problem
by: Anonymous

Hey guys please help me too... i have a casio keyboard too and a yamaha pedal...but mine only has two metal plates...what should I do?

Sep 15, 2010
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it worked!
by: Marcelo

Alfred up there suggested to connect the switch before turning the power on, and it worked perfectly for me. Al least working with the keyboard in Logic Pro 9

Thanks!!

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Yamaha PSR-275 lost music rest

by Tim Garris
(Asheboro, NC)

I have a Yamaha PSR-275 with a lost the music rest. Where can I get a replacement?

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Aug 07, 2009
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Sheet Music Rest
by: Alfred

Dear Tim:

Music Stands generally are supplied in two styles, Plastic Panel or Rod. When they are not readily available from manufacturers, you might consider making a simple one yourself from 3/16” diameter Iron or Copper Rod, or have a local workshop custom make one.

Your Keyboard has either two support Slots or two support Holes into which the Stand fits. The 3/16” diameter of this proposed Stand should fit into either type of Keyboard support aperture.

The Rod used should be approximately 29” long, including a 14” Top and two 71/2” Arms. (71/2” from each end of the Rod make bends to form a straight-topped “U”).

About 1” from the Rod ends, bend them backwards about 30 degrees in the same direction. This will eventually produce the incline for the Sheet Music. As an option, a 2” Ledge can be epoxied to the front at the point just above the bends.

Before rushing into “production” visualize, read and clearly understand these instructions. Good luck!







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Hissing sound from left speaker - Yamaha PSR 275

by Malin
(California)

Hi.

I just bought my Yamaha PSR 275, it's a old, used one.
Yesterday it sounded just fine but today it has a hissing sound/noise from the left speaker when I press some of the keys.
What can I do?
Is it fixable?
Thanks

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Oct 17, 2009
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PSR 275 Speaker Problem
by: Alfred

Dear Malin: Your unit is not that old (2003) and you might try: 1)If powered by Batteries, clean the Compartment Terminals and install fresh batteries. 2)If powered by an Adaptor, clean its Plug and the Jack (aperture in keyboard).
While you are about it, buy a can of compressed air and blow out all spaces between the keys. Follow with a STRONG vacuum job in the same spaces. Please post a follow-up message in this Forum tolet me know if these actions cure your problem. Other participants will benefit from your experience. Thanks and good luck.

Nov 29, 2009
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Tinny sound in left speaker
by: David

I have a similar issue, but I wouldn't categorize the problem as being a hissing. In the left speaker there's a sort of "fuzzy" sound, but only at certain tones (the mid range). It isn't connected to any keys, just the tone. It almost makes me wonder if the speaker has somehow come a bit loose.

The issue appeared and then disappeared for a few days, and now it seems to be back. I'm using the keyboard with an AC adapter. I turn off the keyboard when I'm not using it, so it gets a "reboot" each day. I tried using compressed air around the keys but it had no effect.

Any thoughts, advice, or other things to try would be much appreciated. Thank you!

Nov 30, 2009
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Hissing Speaker PSR 275
by: Alfred

Dear David: Long distance diagnosis is difficult at best, but from what you say, it COULD be a warped (left)speaker cone which can no longer reproduce the mid range signals. You understand that under the circumstances, this is an "educated guess".
I am always loathe to suggest opening any keyboard, but IF YOU ARE AN ADEPT DIYer, you need to buy an OEM Speaker from Yamaha and solder it in place of the offending speaker.
You may receive other suggestions. I would consider all of them.
If my "guess" is right,please post a message so we all can learn from your experience. Thanks and good luck.

Dec 04, 2009
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Further observations
by: David

Hi and thanks for the reply, Alfed! I'm not sure how confident I'd be to remove the old speaker cone and replace it with a new one, as I'm not very well versed in sound electronics. I'm fine with opening things up and taking a peak, though, so I may do that to see if something looks obviously wrong (comparing the left to the right) or loose.

One observation... I'm living in the Northeast, and it generally becomes very, very dry during the winter. Lately we had a bit of rain and the humidity levels rose with it. My speaker woes completely disappeared, but today they returned. I know that wood tends to warp a bit depending on the humidity, but I'd never heard of plastic and/or metal doing so... but I'm wondering if it's possible that this problem is humidity-dependent, and that when there's low humidity the speaker isn't fully anchored (or something like that - not sure how the insides are assembled). Any thoughts there?

If I have the time I'll try to take a look at the insides in the coming weeks. Until then... maybe I should invest in a humidifier :)

Dec 04, 2009
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Speaker Defect
by: Alfred

Dear David: You may be right re humidity, and you just reminded me of a "trick" which might be the answer. I used it many-a-moon-ago when fooling around with warped/off center Cones. First, VERY GENTLY push the cone downward and observe if in the short space it travels, there is any friction against its magnet core. If there is, the Cone is off-center as it moves up-and down when the keyboard is activated, and that would be the problem you have. On the assumption that it is, you then "stuff" a small wad of cotton wool between the BACK OF THE CONE and its Metal Frame. This will be a trial & error procedure, taking care not to pierce the Cone, and locating the cotton ball so that it keeps the Cone centered as it vibrates around the magnet. Further, do not pack the cotton too tightly as you will want it to "spring" with the vibrations. As you've done, please again post a message if the "trick" works. Good luck.

Feb 08, 2011
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Definately a humdity problem
by: Anonymous

Definitately humidity problem; I experience same and in my left speaker; when the weather improves or is dry I get a better sound...I wonder if a humidifer wil really work?

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Yamaha PSR-275 worth

by Jillian
(Georgia)

How much is a Yahama PSR-275 worth that has never been used?

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Sep 15, 2009
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Value of Unused PSR 275 2003
by: Alfred

Dear Jilian: Your unit was a 2003 Yamaha release, and if you haven't done so, one way to gauge its value is to see if it is offered on Ebay so you can establish its starting price and follow through until a sale is finalized. Because it is "new" you might then decide to list it yourself with a "Reserve" to ensure you get your money's worth. Also look around the internet for additional sites and asking prices. Good luck.

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