Question about Yamaha Portable Keyboard with 61 Touch-Sensitive Keys and General MIDI
I'm french, so excuse me for my poor english.
My Yamaha PSR-280 (not 88 but only 61 notes) Keyboard has been connected to a 26 V AC power instead of the normal 12 V DC power (a mistake from somebody else).
Now the screen lights on but nothing is displayed and impossible to get a sound.
I suppose there is a fuse somewhere, but where ?
Nothing in the manual about this.
I am very far from any Yamaha specialist and I must do it by myself.
Thanks for your answers
An answer, but likely not a solution. I believe all Yamaha PSR series keyboards use the same 12 VDC adaptor, so I looked at the electrical schematic for another model I have. There seems to be no fuse on the power input. There are two components shown on the positive and negative wires off the power socket, but the symbols do not look like anything I have seen for fuses - they may be resistors. Power goes directly to a 5 VDC voltage regulator, which powers all of the solid state componenents. Too much voltage of the wrong type could have easily ruined many of the sensitive components.
Your only hope is to check the power socket area for the possibility of having fuses. My drawing shows the power socket, voltage regulator, and audio power amplifier being on one circuit board. That may not actually be the way it is in your model.
(your English is fine)
Posted on Mar 14, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Jan 19, 2016 | Yamaha Music
Dec 25, 2015 | HQRP AC Adapter / Power Supply for Yamaha...
Jan 25, 2013 | Yamaha Keyboard w/ 76 Graded Action Piano...
Sep 01, 2011 | Yamaha PSR-E323 Keyboard
Jun 09, 2011 | HQRP AC Adapter / Power Supply for Yamaha...
Apr 13, 2011 | HQRP AC Adapter / Power Supply for Yamaha...
Mar 17, 2011 | HQRP AC Adapter / Power Supply for Yamaha...
Feb 18, 2010 | Yamaha Music
Jan 22, 2009 | Yamaha Portable Keyboard with 61...
1,476 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: