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Keyboards, Modules & Hardware Synths Synthesizers, workstation keyboards, digital pianos

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Old 29th July 2009 , 08:00 PM
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Default Yamaha PSR215 electrical problem

I have got a yamaha psr215 no longer under guarantee. I have a problem where it sometimes works and sometimes does not. The symptoms are as described below:

1. most of the time when the "power on" button is pressed none of the LED lights or the display come on. None of the keys work.
2. Sometimes a random selection of LED lights will come on and it will display a random number or pattern on the display. None of the keys work
3. Once in a while the unit powers up correctly and works but only lasts for a few seconds or minutes and then stops working.

Any ideas what the problem is?
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Old 29th July 2009 , 08:19 PM
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Are you powering via a power adaptor and is it the recommended one?
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Old 29th July 2009 , 08:30 PM
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Default Using a universal power adapter

Hi

I am using a universal power adapter set to 12v (not a yamaha adapter). I have also used batteries but had the same problem with batteries.

Are Yamaha's known for having problems like this with non-yamaha power adapters?
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Old 29th July 2009 , 08:52 PM
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I wouldn't have thought so - they just want you to buy theirs.
But it will say only use theirs though or your product may suffer.
It could just be some chip has gone bananas.

I'm lost after checking the power and resetting back to factory defaults.
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Old 30th July 2009 , 09:00 AM
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I have a Yamaha pss-790 and this went loopy some time ago.

Search the manual (you can dld it if you don't have one) for the "factory reset" protocol this usually consists of holding down two buttons or keys whilst powering up the keyboard.

You can also do a MIDI link test whereby you connected DIN to DIN and get some error codes.

There is also a Yamaha keyboard forum and I found the guys quite friendly (for kbd players that is!).

Dave.
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Old 31st July 2009 , 05:45 PM
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Default thx

will keep surfing the web till i find an answer
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Old 30th November 2009 , 07:01 PM
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Quote:
Originally Posted by ritik View Post
will keep surfing the web till i find an answer
May seem a overly simple answer but have you checked whether the unit needs and AC or DC supply?
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Old 4th December 2009 , 08:49 AM
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". Once in a while the unit powers up correctly and works but only lasts for a few seconds or minutes and then stops working."

Another thought: The 5V regulator ic is on the blink. Might just be a dry joint or even the chip just needs bolting back onto its heatsink if it has one.

Dave.
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Old 31st December 2010 , 02:29 PM
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Default New problem - same keyboard

I love my PSR 215, and have it over 14 years. I hardly use it anymore since I have worn down the keys so that it isn't very responsive, particularly below middle C. I need to realy hit the keys hard to register sounds. Local repair shops have not been able to help since they say the unit has been discontinued. Any suggestions?:
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