Yamaha PSR215 electrical problem

[ritik]

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?

[I_Am_Bic_Pentameter]

Are you powering via a power adaptor and is it the recommended one?

[ritik]

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?

[I_Am_Bic_Pentameter]

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.

[ecc83]

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.

[ritik]

will keep surfing the web till i find an answer