Disklavier

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.

On 1/20/2014 2:07 PM, Horatio Kemeny wrote:
> 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
>
>
> On Jan 20, 2014, at 2:02 PM, James W Kenney <jimwkenney@... 
> <mailto:jimwkenney@...>> wrote:
>
>> 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@... 
>> <mailto:bill.brandom03@...>>
>> To: disklavier <disklavier@yahoogroups.com 
>> <mailto: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@... <mailto:jimwkenney@...>> wrote:
>>
>>     I connected a set of ear phones and I can hear the music. Nothing
>>     from the keys.
>>
>>     Jim
>>
>>
> 

-- 

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