Yahoo Groups archive

Disklavier

Index last updated: 2026-04-28 23:20 UTC

Message

Re: Re[2]: [disklavier] Power Failure

2016-09-24 by GDPERRY@...

I use APC Uninterruptible Power Supplies (UPS) on all my electronics. Do  
know if they are capable of protecting my Mark III electronics?
Thanks,
Glen Perry
 
 
 
In a message dated 9/24/2016 4:40:15 P.M. Central Daylight Time,  
disklavier@yahoogroups.com writes:

 
 
 
i had severe power problems for many years and did a lot of research in  to 
surge protection. pretty much all the consumer grade surge protection  
devices are worthless. the only thing good would be if they really do honor  the 
protected equipment replacement insurance they offer but the devices  
themselves are almost worthless.  they are based on MOV technology and  usually 
have in adequate sizes and types of these to do anything other than  protect 
form minor transients. they can also have noise filtering which can be  
helpful but it is not surge protection. also, when MOVs are stressed, they  
gradually fail and there is no way to know if they are still capable of doing  
anything other than by destructive testing. 


the power company fixed the problem that as causing the surges. it turned  
out that they needed to spend a few million dollars replacing the 
distribution  system in my area. i actually won against PG&E which is almost unheard  
of.


in the meantime i installed an industrial quality whole house protector  
that has something like 200 times the energy absorbing ability of a standard  
power strip type protector. i am actually on my second such unit because one 
 surge destroyed the first one. 


i also discovered that the Panamax surge protectors that have the feature  
they call "protect or disconnect" are vastly superior to other devices. they 
 have a deadman relay that keeps the load connected and if the input is 
over or  under the design limits or if there is a high voltage transient, the 
relay is  released protecting the connected load and also the MOVs. so the 
MOVs are much  less likely to be stressed. these strips protect against 
brownout conditions  as well. 
 


Best regards, Spencer  Chase
67550-Bell Springs Rd.
Garberville, CA 95542 Postal service  only.
Laytonville, CA 95454 UPS only.
21220 92nd Place W., Edmonds, WA  98020
Spencer@...
Spencer@...
Spencer@...
http://www.spencerserolls.com
http://www.poodlex.com
(425)  791-0309
(707) 223-8212







------ Original Message ------
From: "Charles Lau charleslau@... [disklavier]" 
<disklavier@yahoogroups.com>
To: disklavier@yahoogroups.com
Sent: 9/24/2016 1:30:50 PM
Subject: Re: [disklavier] Power Failure



 

--------------------------------------------
On Sat, 9/17/16, markbevingtonsmith@...  [disklavier] 
<disklavier@yahoogroups.com>  wrote:

Subject: [disklavier] Power Failure [1 Attachment]
To: disklavier@yahoogroups.com
Date:  Saturday, September 17, 2016, 1:34 AM


When I spoke with tech  support about my MarkIV PSU problem they said 
always have it plugged into a  surge protector.

You can buy these on Amazon for example
https://www.amazon.com/Belkin-BE112230-08-12-Outlet-Surge-Protector/dp/B000J
2EN4S/ref=sr_1_3?ie=UTF8&qid=1474748885&sr=8-3&keywords=surge+protector+powe
r+strip


[Attachment(s)  from
markbevingtonsmith@...  [disklavier] included
below]


Hi Everyone, 
I have  a Disklavier MKIIXG (1999) that
has just died. I have had a quick  check round the PSU
modules and have found that the 4A fuse (circled in  the
attached photo) has blown. Does anyone know what may have
caused  this? Also is this fuse a normal or quick blow type
before I  order some? The piano was being used in silent
mode on last  operation and switched off as normal. Also as
the silent mechanism  stepper motor is still in the hammer
blocking position  so I need to release the cable for normal
piano operation. Is there  a correct way to release this
without power? Many thanks for any  help. 









#yiv4175771693 #yiv4175771693  --

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.