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Digital Yamaha P255 started doing static noise
#3051207 11/30/20 11:40 AM
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Hey, had my p255 for a few years now.

I wanted to try a new set of headphones and found some static noise occurring when I hit too many notes, especially pronounced when I'm hitting chords on the low end. Thought it was the headset that needed driving so I got an amp, issue persisted.

I went back to the old headphones and I started noticing with those too then, just more muddled so may have gone under the radar for that reason. This is using the direct jack for headphones. I tried passing my piano with a midi cable into my PC to use with stuff like pianoteq etc, and even there, the same low end static noise occurs when going in with heavy chords and low end notes. (Which is weird because isn't midi input just like...a signal? How could that same issue prolifer via my PC through a VST and a 3rd different set of headphones...but i'm ignorant on the subject I suppose)

What could be the issue and is this something I can get repaired? It's a pricy machine for me to replace and honestly I don't even know what kind of specialist I need to look for who could mechanically fix this, if at all possible. Or if this is just some chipset/board issue that I can never get parts to fix and really puts me in a "buy a new one" situation. Any advice appreciated.

Thanks

Last edited by Sabin_; 11/30/20 11:44 AM.
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Re: Digital Yamaha P255 started doing static noise
Sabin_ #3051247 11/30/20 12:54 PM
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How are you listening to the VST, from the computer directly, or via the DP and line in to the speakers or headphones?

Re: Digital Yamaha P255 started doing static noise
Sabin_ #3051254 11/30/20 01:07 PM
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Well if it happens with the P-255 and with the computer and with several different headphones, then maybe it's time to get yout ears checked.

And this isn't a snarky joke or anything. 😀

Maybe it's just wax. Maybe it's the first symptoms of minor hearing loss. Who knows.

Re: Digital Yamaha P255 started doing static noise
Sabin_ #3051257 11/30/20 01:08 PM
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Originally Posted by spanishbuddha
How are you listening to the VST, from the computer directly, or via the DP and line in to the speakers or headphones?

From my computer with wireless headphones. In any case if I could at least have it fixed via the piano and headset jack outside of the VST. I know for software the static can sometimes just be the soundcard + extremely low latency that i'm pushing on it I guess, it's not something uncommon i've seen when using a mini midi with FL Studio. But straight headphones plugged in the piano I do need to get that eliminated

Re: Digital Yamaha P255 started doing static noise
Sabin_ #3051262 11/30/20 01:14 PM
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Originally Posted by clothearednincompo
Well if it happens with the P-255 and with the computer and with several different headphones, then maybe it's time to get yout ears checked.

And this isn't a snarky joke or anything. 😀

Maybe it's just wax. Maybe it's the first symptoms of minor hearing loss. Who knows.

If it was my ears I would not be able to change the side of the static by just flipping my headphones around. There's a stark different between CRT-ish levels of static noise/crackling and tinnitus, and I can guarantee that I don't have the latter yet lol. This is 100% coming from the P255 regardless if I run the midi through a VST on PC or through it's own audio headphone line

Last edited by Sabin_; 11/30/20 01:17 PM.
Re: Digital Yamaha P255 started doing static noise
Sabin_ #3051272 11/30/20 01:31 PM
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wireless headphones.

Try wired headphones and see if the problem is solved.


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Re: Digital Yamaha P255 started doing static noise
FrankCox #3051287 11/30/20 02:02 PM
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Originally Posted by FrankCox
wireless headphones.

Try wired headphones and see if the problem is solved.

The 3rd pair of headphones I tried, specifically when using the VST and P255 as a MIDI, had the same issue

Re: Digital Yamaha P255 started doing static noise
Sabin_ #3051291 11/30/20 02:08 PM
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So, does the problem disappear if you completely leave out the P-255 (unplug it) and just listen to something on the computer? Like a MIDI file in a piano VSTi.

Re: Digital Yamaha P255 started doing static noise
clothearednincompo #3051323 11/30/20 03:12 PM
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Originally Posted by clothearednincompo
So, does the problem disappear if you completely leave out the P-255 (unplug it) and just listen to something on the computer? Like a MIDI file in a piano VSTi.

I think I made a mistake to mention the VST via PC and it's better if we forget about it. I added that bit to say that, strangely, even through a VST I get the same issue than using the piano vanilla with the headphone jack without any PC or interference in between, but everyone has turned their focus onto the VST/PC. Naturally, all 3 headphones via PC sound perfectly fine, without any crackle. The issue is the piano, not the PC

I have crackling with two different headphones of varying degree on my P255 when using the regular headphone jack, in both jack slots, which appeared recently and happens when I hit a lot of low end notes.

Last edited by Sabin_; 11/30/20 03:14 PM.
Re: Digital Yamaha P255 started doing static noise
Sabin_ #3051338 11/30/20 04:05 PM
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Maybe the headphone amplifier on the Yamaha is misbehaving.

You might then get clean signal from the Line Out, but it's too weak for headphones as-is.

A temporary amplifier could be the computer if it has a Line In or you have an audio interface.

Another temporary amplifier could be a set of powered computer speakers if they have a headphone socket and a volume knob.

If either one solves the problem, then maybe the options are
a) Have the Yamaha fixed
b) Buy a headphone amplifier and plug it into the Line Out (Or borrow. Or maybe you already have a one.)

All this assuming that I guessed right which isn't obvious at all. 😄

Re: Digital Yamaha P255 started doing static noise
clothearednincompo #3051341 11/30/20 04:19 PM
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Originally Posted by clothearednincompo
Maybe the headphone amplifier on the Yamaha is misbehaving.

You might then get clean signal from the Line Out, but it's too weak for headphones as-is.

A temporary amplifier could be the computer if it has a Line In or you have an audio interface.

Another temporary amplifier could be a set of powered computer speakers if they have a headphone socket and a volume knob.

If either one solves the problem, then maybe the options are
a) Have the Yamaha fixed
b) Buy a headphone amplifier and plug it into the Line Out (Or borrow. Or maybe you already have a one.)

All this assuming that I guessed right which isn't obvious at all. 😄


Ok that's worth a try, so if i'm using a Host to USB cable to connect the yamaha to the PC, this is not the same as using the line out? That's the current cable I have to connect from piano to pc directly. Unfortunately I don't have an audio interface yet. If I need a different cable because it tickles different internal components that's no biggy, just want to make sure it's not redundant with what I already tried

Re: Digital Yamaha P255 started doing static noise
Sabin_ #3051349 11/30/20 04:37 PM
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With the P-255 the USB cable doesn't carry audio.

Most digital pianos don't. A few do.

Re: Digital Yamaha P255 started doing static noise
clothearednincompo #3051447 11/30/20 09:40 PM
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Originally Posted by clothearednincompo
With the P-255 the USB cable doesn't carry audio.

Most digital pianos don't. A few do.

Right i'm just sending a signal not straight audio

Re: Digital Yamaha P255 started doing static noise
Sabin_ #3051458 11/30/20 10:23 PM
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Many people are confused by the difference between midi output and audio output.

Audio output can be considered to be the "actual sound", so when I play a C chord on my piano and record the audio output I (should) get a sound on my recording that sounds exactly like what I just played on my piano.

On the other hand, if I send the output through a midi connection, what I am sending is just a description of what the sound is. "This is middle C played at 70% of maximum volume." That's it. There's nothing saying exactly what that middle C should actually sound like. Is it a Steinway sound? A Bechstein sound? Yamaha? We don't know from what that signal says. It's just a piano playing middle C. So it could be any piano and it's up to your midi support program on the computer end to decide what it should sound like when played on the computer end and what you're hearing on the computer may not and doesn't have to sound anything like what you hear on the piano.

So, simply stated:
Audio output: The sound of what you're playing.
Midi output: The name of the notes, the duration of each note and how hard you hit the keys. And nothing more.


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