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P-515 locked up completely
#2823536
03/06/19 10:17 PM
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Joined: Jul 2009
Posts: 3,164
sullivang
OP
3000 Post Club Member
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OP
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My P-515 had some type of a crash. I was playing, listening with external monitors, when all of a sudden both speakers started making a loud clicking sound. The panel was unresponsive, however I was able to turn it off with the power button, BUT, that still didn't stop the noise - I had to turn off the power source to stop the noise.
It was plugged into a computer via USB at the time,but I was using the on-board sounds. I did try removing the USB cable first - that didn't help.
Greg
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Re: P-515 locked up completely
[Re: sullivang]
#2823548
03/06/19 11:07 PM
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Joined: Oct 2017
Posts: 1,181
arc7urus
1000 Post Club Member
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You may have unlocked an hidden on-board sound. Or does the manual of the P515 say that "the instrument produces loud clicking sounds and becomes unresponsive -> this is normal, but only very seldom occurs." After all, this is what the NU1x manual says about the loud note 
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Re: P-515 locked up completely
[Re: sullivang]
#2823558
03/07/19 12:17 AM
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Joined: Jul 2009
Posts: 3,164
sullivang
OP
3000 Post Club Member
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OP
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Snortle. (that's a combined snort & chortle)
Greg
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Re: P-515 locked up completely
[Re: sullivang]
#2823574
03/07/19 01:30 AM
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Joined: Jul 2012
Posts: 7,919
peterws
7000 Post Club Member
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I think we expect too much from our pianos. They're only human . . . they're only human after all. Don't lay the blame on them . . . .
"I am not a man. I am a free number" " ![[Linked Image]](http://www.pianoworld.com/Uploads/files/Joplinbadgetiny.jpg) "
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Re: P-515 locked up completely
[Re: sullivang]
#2823594
03/07/19 03:17 AM
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Joined: Mar 2014
Posts: 750
lophiomys
500 Post Club Member
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500 Post Club Member
Joined: Mar 2014
Posts: 750 |
Now it is time to pray for a software update and better management of software development at Yamaha. Lets see, if the CP88 will do this once live on stage?  sullivang, what did Yamaha Support have to say about this fault?
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Re: P-515 locked up completely
[Re: lophiomys]
#2823595
03/07/19 03:24 AM
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Joined: Jul 2014
Posts: 1,886
JoeT
1000 Post Club Member
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Now it is time to pray for a software update and better management of software development at Yamaha. How is a software update going to fix a hardware fault?
Yamaha P-515 | Kawai ES100 | Steinberg UR22 | Sony MDR-7506
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Re: P-515 locked up completely
[Re: sullivang]
#2823596
03/07/19 03:26 AM
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Joined: Mar 2014
Posts: 750
lophiomys
500 Post Club Member
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500 Post Club Member
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Posts: 750 |
How do you know it is a hardware fault?
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Re: P-515 locked up completely
[Re: lophiomys]
#2823598
03/07/19 03:34 AM
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Joined: Jul 2014
Posts: 1,886
JoeT
1000 Post Club Member
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1000 Post Club Member
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How do you know it is a hardware fault? Because it looks like one. A power surge resulting in a PSU fault is the most probable scenario leading to these symptoms.
Yamaha P-515 | Kawai ES100 | Steinberg UR22 | Sony MDR-7506
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Re: P-515 locked up completely
[Re: sullivang]
#2823601
03/07/19 03:41 AM
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Joined: Mar 2014
Posts: 750
lophiomys
500 Post Club Member
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500 Post Club Member
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Posts: 750 |
How often have you seen such "power surge with PSU fault" happen? In this case, the device would have gone dark with PSU failure following a power surge, and it would not have continued to make noise until switched off. The computer nearby would also have been affected by a power surge of that order of magnitude, at least the USB port burned...
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Re: P-515 locked up completely
[Re: lophiomys]
#2823607
03/07/19 04:02 AM
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Joined: Jul 2014
Posts: 1,886
JoeT
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The symptoms match exactly what to expect from the 16 V DC going off limits: micro-controllers locking up, (pre-)amplifiers starting to make noises. An incandescent lit display might have flashed as well. People overestimate the power of what firmware can do quite a lot it seems. How often have you seen such "power surge with PSU fault" happen? In this case, the device would have gone dark with PSU failure following a power surge, and it would not have continued to make noise until switched off. The computer nearby would also have been affected by a power surge of that order of magnitude, at least the USB port burned... A computer PSU is a bit more sophisticated. It has continuous output voltage monitoring and shuts off immediately, if these go off limits. A 400 W PSU can stand a surge much better than a simple 40 W brick or a wall-wart.
Yamaha P-515 | Kawai ES100 | Steinberg UR22 | Sony MDR-7506
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Re: P-515 locked up completely
[Re: sullivang]
#2823616
03/07/19 04:39 AM
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Joined: Mar 2014
Posts: 750
lophiomys
500 Post Club Member
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500 Post Club Member
Joined: Mar 2014
Posts: 750 |
So, what you are describing is: - crappy surge protecting in the PSU of a 1500.- USD digital piano - missing input voltage monitoring inside the digital piano ... From the end customers view, that is about the same as poorly developed firmware / software. Shamed be he who thinks evil of it. 
Last edited by lophiomys; 03/07/19 04:40 AM. Reason: typo
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Re: P-515 locked up completely
[Re: sullivang]
#2823622
03/07/19 04:48 AM
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Joined: Sep 2009
Posts: 9,910
MacMacMac
9000 Post Club Member
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9000 Post Club Member
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Posts: 9,910 |
We used to have armchair quarterbacks. We now have web surfing repair technicians.
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Re: P-515 locked up completely
[Re: lophiomys]
#2823635
03/07/19 05:45 AM
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Joined: Jul 2014
Posts: 1,886
JoeT
1000 Post Club Member
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1000 Post Club Member
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Posts: 1,886 |
- crappy surge protecting in the PSU of a 1500.- USD digital piano When you get an external PSU brick like the Yamaha PA-300C, you know that costs have been cut. Just look at the after-market pricing: https://www.thomann.de/intl/yamaha_pa300.htmThat's for a $10 part made in China. - missing input voltage monitoring inside the digital piano That needs to be on the PSU. There is not much a DC device can do about receiving the wrong voltage.
Yamaha P-515 | Kawai ES100 | Steinberg UR22 | Sony MDR-7506
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Re: P-515 locked up completely
[Re: sullivang]
#2823648
03/07/19 06:40 AM
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Joined: Jul 2009
Posts: 3,164
sullivang
OP
3000 Post Club Member
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OP
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Posts: 3,164 |
Not sure whether it was a surge or not - I definitely didn't notice the room lights dim though. Re power management, there would of course be internal regulators creating stable low voltage supplies, and I tend to think that proper design would at the very least cause the processor(s) to cleanly reset/restart if the main internal supply voltages went under voltage momentarily.
Greg.
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Re: P-515 locked up completely
[Re: sullivang]
#2823682
03/07/19 07:59 AM
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Joined: Oct 2017
Posts: 1,181
arc7urus
1000 Post Club Member
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Posts: 1,181 |
It is not uncommon to find computers with medium/high-end components powered by a low-quality PSU. The issue is that a quality PSU may cost 10x more than a cheap version that is advertised as having an equivalent efficiency and power rating. Given that a DP has low power requirements and demands a stable power load, I seriously doubt that a DP manufacturer would ever decide to install a high-quality PSU and reduce its profit margin. Unfortunately, I do not remember anyone that has opened up a top-tier digital piano to be surprised by the high-quality of its capacitors and other components...
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Re: P-515 locked up completely
[Re: lophiomys]
#2823697
03/07/19 08:48 AM
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Joined: Apr 2009
Posts: 4,836
dmd
4000 Post Club Member
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4000 Post Club Member
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sullivang, what did Yamaha Support have to say about this fault?
I did not see any answer to this.
Don
Kawai MP11SE, Focal Professional CMS 40 near-field monitors, Yamaha HS8S Powered Subwoofer, SennHeiser HD 559 Headphones, Pianoteq and numerous other VSTs (Seldom Used)
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Re: P-515 locked up completely
[Re: sullivang]
#2823704
03/07/19 09:14 AM
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Joined: Aug 2017
Posts: 627
Jitin
500 Post Club Member
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i belive there is a way to reset the piano to factory default. You have to hold the last key when the piano is shutoff, then while holding turn on the piano, and let the key go after the screen say factory reset complete and it comes to the normal view
Yamaha P155, Yamaha P515
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Re: P-515 locked up completely
[Re: sullivang]
#2823734
03/07/19 10:30 AM
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Joined: Aug 2011
Posts: 6,262
JohnSprung
6000 Post Club Member
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At this point we don't know if a factory reset will help, or if this is a case of fried hardware.....
-- J.S. ![[Linked Image]](http://www.pianoworld.com/forum/gallery/42/thumbs/7589.jpg) Knabe Grand # 10927 Yamaha CP33 Kawai FS690
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Re: P-515 locked up completely
[Re: JohnSprung]
#2823779
03/07/19 12:25 PM
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Joined: Jul 2017
Posts: 515
jamiecw
500 Post Club Member
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500 Post Club Member
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Posts: 515 |
At this point we don't know if a factory reset will help, or if this is a case of fried hardware.....
I'd be surprised if there is anything fried assuming a restart brought the DP back to life...I'd like to think that if that was not the case the OP would have said the DP locked up and it never came back on ever again! :-)
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Re: P-515 locked up completely
[Re: sullivang]
#2823783
03/07/19 12:34 PM
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Joined: Jul 2009
Posts: 3,164
sullivang
OP
3000 Post Club Member
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OP
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I've reported it to Yamaha - will let you know what transpires.
And of course it came back to life. Again - I had to remove external power to reset it. (I did that by pulling out the plug from the back of the unit, and plugging it back in again. That was simply because I was too lazy to work out which AC outlet it was plugged in to)
Greg.
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Rob is an amazing jazz pianist in LA,a composer, and a friend of mine.
Frank B. / Piano World
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