Spencer Chase <lists@spencerserolls.com> wrote:
i don't know specifically how the dkv power supply works but most
power supplies have rather large filter capacitors which will hold a
charge for a long time. usually there is a bleeder resistor across
the cap so it discharges once the supply is turned off. the larger
the resistor value, the slower the discharge and the less energy
wasted heating up the resistor. you have to choose a compromise
between wasted power and fast shutdown. maybe Yamaha decide to be
very green??? this is what i tend to do.
I'm curious if anyone has some insight as to why powering down for so long is necessary? Most electronics require a few seconds at most to be completely powered off and ready for a full reset.
What (and how) could something still be going on with no power to the system at all?
I'm not questioning the validity of the strategy as it seems to work and the time, as per this example, makes a difference.
But what's actually going on?
.....HK
Bill
Thank you again. The fix worked. I had powered down, but quickly rebooted. That did not work.
Jim
-----Original Message-----
From: Bill Brandom <bill.brandom03@gmail.com>
To: disklavier <disklavier@yahoogroups.com>
Sent: Mon, Jan 20, 2014 12:17 am
Subject: Re: [disklavier] Inactive M IV part 2
James,
Completely power down the Disklavier by holding in the oblong green on/off button. After it quits blinking, unplug it from the wall and let it sit about an hour.
Plug it back, in and power it up. I think you will find the keys and pedals will start playing again for you.
You MUST unplug the piano from power for this to work.
Bill
On Sun, Jan 19, 2014 at 6:24 PM, James W Kenney <jimwkenney@netscape.net> wrote:
I connected a set of ear phones and I can hear the music. Nothing from the keys.
Jim
-- Best regards, Spencer Chase 67550-Bell Springs Rd. Garberville, CA 95542 Postal service only. Laytonville, CA 95454 UPS only. Spencer@spencerserolls.com http://www.spencerserolls.com (707) 984-8356 (425) 791-0309