Disklavier

Hi Mike,


Sorry to hear about your power supply problems! Mike, other than ordering replacement power supplies, I do not have specific information that can help you.


Give Yamaha Piano Service a call tomorrow at 714-522-9894 and ask for Martin Arroyo. Martin is a great electronics technician that will be able to help you with this.


Sorry I can't be much more help with this!


Bill




-----Original Message-----
From: N9544C n9544c@... [disklavier] <disklavier@yahoogroups.com>
To: disklavier <disklavier@yahoogroups.com>
Sent: Sun, Oct 30, 2016 6:01 am
Subject: [disklavier] MX100II POWER SUPPLY ISSUE



  
    
                  
Greetings to all.  While listening to my MX100II, the piano suddenly went totally dead.  I thought I lost house power!  I have been maintaining my Disklavier electronics (floppy drive, display) while my local tuner maintains the acoustic portion as I have a background in electronics, have all the service literature for my model, proper test equipment, etc.  

It is definitely a power supply issue as ALL outputs are 0V with the main power relay closing normally and all fuses are good!  Of course this would happen on a Saturday when Yamaha service is closed!  

So before I break out my scope and start trouble shooting, have any of you any prior experience with this power supply or know of known issues?  I did read something about the 20V regulator being operated outside of its rating and shutting down and I will check that today.  Anything else?

Bill B, any first hand experience with this?

Thanks in advance,

Regards,

Mike

Sent from my iPad