Author Topic: Power supply problem  (Read 536 times)

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Offline arvacon

Power supply problem
« on: November 17, 2017, 06:35:58 AM »
Hi everyone.

I have the PSR-E453 for about 6 months and suddenly the power supply stopped working.
I tested it with a multimeter and it's dead. I used a power supply from another keyboard and my keyboard is working fine.

I searched at Yamaha's site for support and I called the Yamaha representative of my country, to talk about my problem. They told me that the power supply is not supported by the guarantee..
The representative was kind and he told me that even the guarantee doesn't support this, as it is something expendable (???), he will finally send me a new one, but I have to go to the store that I bought the keyboard, to return the old one and receive the new one.

The problem is that this store is 100km far away from my home, so that means +100km for return, so it will be like I buy it new, because I will pay it in gasoline. I asked him to send me that with post and he said that he can't send this to me, he will send it to that store and then I will have to talk with them and if they agree to send this, I must pay all the post expenses for send and receive. Go figure...

I was wondering, is this a global phenomenon of Yamaha's support, or is it just a Greek innovation?
PSR-E453
 

Re: Power supply problem
« Reply #1 on: November 17, 2017, 10:58:03 AM »
Hi arvacon,
Yes in my country too, warranty covers only the Keyboard, and not the Power Adaptor. I confirmed that from the retailer during my purchase.
Anupam
PSR-E453
 

Offline SeaGtGruff

Re: Power supply problem
« Reply #2 on: November 17, 2017, 02:11:54 PM »
In some places you don't get a power adapter when you purchase the PSR-E453 and similar models; you must purchase a separate "Survival Kit" that contains the correct adapter. That's how it is in the USA, although some merchants will include the appropriate version of the "Survival Kit" (at additional cost, of course) when you purchase a PSR-E453 from them-- or you can just purchase the PSR-E453 without any "extras" if you already have a suitable power adapter.

While it might seem unfriendly of Yamaha not to cover the power adapter under the keyboard's warranty, power adapters can be easily damaged or worn out due to things like breaking the wires inside the cord by habitually rolling the cord around the adapter when putting it away-- which can cause the wires to get repeatedly bent in different directions until they eventually break-- or fluctuations in the power being supplied to the adapter (e.g., surges or drops in power) that could eventually wear out the power adapter's circuitry, etc.
Michael Rideout
YPT-400, PSR-E433, PSR-E443
 

Offline arvacon

Re: Power supply problem
« Reply #3 on: November 17, 2017, 04:25:58 PM »
Thanks guys for the info.

I should be happy that at least they offered me this change then, but yamaha should know, that this is not the right way to keep a customer happy.


Once I bought a cheap 12 euros soldering iron station from Lidl supermarket and after 18 months it stopped working.
Lidl offers 3 years guarantee for its products, so when I called them, I was sure that they would say to me that this is something that they can't replace, because it is something that it can fault after extended use. But nop, they didn't tell a word, they said we are sorry that you had trouble with our product, we send you a new one. I wish all the companies to had this kind of politics..  :)
PSR-E453
 

Offline arvacon

Re: Power supply problem
« Reply #4 on: November 21, 2017, 05:54:17 PM »
I finally visited the store today, as I had another work at the city. They asked the old one back and they gave me a new one.
When I came home, I checked this with the multimeter and I just saw that this is not a stabilized power supply, as it says that is is 12v but it sends 16.5volts on output.

Can someone with a multimeter, please confirm if your power supply from your E-series keyboard sends 12volts or more on output?

I just would like to see if this is also defective or if they are all non stabilized.
PSR-E453
 

Offline SeaGtGruff

Re: Power supply problem
« Reply #5 on: November 21, 2017, 11:43:39 PM »
My father has a multimeter for testing batteries, but I've never tried testing a power adapter with it. How does one do that? It sounds tricky.
Michael Rideout
YPT-400, PSR-E433, PSR-E443
 

Offline arvacon

Re: Power supply problem
« Reply #6 on: November 22, 2017, 05:21:01 AM »
From what I understand,your father must has an analog multimeter, so have a look at this video.
https://youtu.be/G2j8KUTeuls

You follow the same procedure with the battery testing, as you need put the scale at DC.
« Last Edit: November 22, 2017, 05:23:16 AM by arvacon »
PSR-E453
 

Offline arvacon

Re: Power supply problem
« Reply #7 on: November 24, 2017, 08:16:10 PM »
Any news about the measurement?  :)
PSR-E453
 

Offline SeaGtGruff

Re: Power supply problem
« Reply #8 on: November 24, 2017, 08:23:44 PM »
I'm at my sister's for Thanksgiving, but I'll be heading back home tomorrow and should be able to try testing it tomorrow night. :)
Michael Rideout
YPT-400, PSR-E433, PSR-E443
 

Offline arvacon

Re: Power supply problem
« Reply #9 on: November 24, 2017, 08:47:20 PM »
Enjoy your time then. Happy Thanksgiving  :)
PSR-E453
 

Offline arvacon

Re: Power supply problem
« Reply #10 on: November 25, 2017, 12:57:57 AM »
Thanks Roy for the info. Yes I measured it without load. When I measure it with load, it drops around 12v, like the not stabilized ones. Your explanation does make sense, but I would expecting this behavior from a 2-3 dollar switching power supply, than a 40 dollars Yamaha one.
I have a cheap router's switching power adapter that gives exactly 12 volts, so I think there is no excuse for Yamaha here. Let's hope at least that they have make good work at the input voltage circuit on the keyboard's mainboard.
PSR-E453
 

Offline travlin-easy

Re: Power supply problem
« Reply #11 on: November 25, 2017, 01:28:26 PM »
Most PC power supplies will be more than adequate to run your keyboard, and you can find them at relatively low prices. Just make sure that it is 16-volts DC Output and has the correct connector, polarity and amperage rating to power your keyboard.

Hope this helps,

Gary 8)
Love Those Yammies...
 

Offline arvacon

Re: Power supply problem
« Reply #12 on: November 25, 2017, 02:42:00 PM »
Just make sure that it is 16-volts DC Output..


Yes the laptop power supplies are by far better, but psr-e453 works at 12 volts.
PSR-E453
 

Re: Power supply problem
« Reply #13 on: November 25, 2017, 05:52:48 PM »
But how could PC power supply run a keyboard, when their output ranges from 19V-24V these days ? Won't it damage the keyboard's circuitry ?
Anupam
PSR-E453
 

Offline SeaGtGruff

Re: Power supply problem
« Reply #14 on: November 25, 2017, 06:05:15 PM »
I think Gary might have been talking about the PSR-S and Tyros keyboards, which use a different power adapter than the PSR-E keyboards. However, the idea can be extended to other third-party power adapters, as long as they fit the specs for a given PSR-E model's power adapter. For example, the PSR-E403/YPT-400 uses a slightly different power adapter than the PSR-E433 and PSR-E443.
Michael Rideout
YPT-400, PSR-E433, PSR-E443
 

Offline travlin-easy

Re: Power supply problem
« Reply #15 on: November 25, 2017, 09:04:49 PM »
I have used several laptop power supplies in the past, and they ranged from 12 to 16 volts - not 16 to 24 volts. Never saw one that high, but I'm sure they exist. You can find replacement power supplies on Ebay and other internet locations at very reasonable prices. Just Google "replacement power supply for PSR-E433. I just found one at https://www.ebay.com/itm/AC-Adapter-For-Yamaha-PSR-E433-PSRE433-Portable-Piano-Keyboard-Power-Supply-Cord-/271794554734

Gary 8)
Love Those Yammies...