[mythtv-users] Harmony 700?
chrisznews4 at rogers.com
Sun Oct 24 15:07:08 UTC 2010
On 22/10/2010 9:24 PM, Tortise wrote:
> ----- Original Message ----- From: "Gabe Rubin" <gaberubin at gmail.com>
> To: "Discussion about MythTV" <mythtv-users at mythtv.org>
> Sent: Saturday, October 23, 2010 1:10 PM
> Subject: Re: [mythtv-users] Harmony 700?
> On Fri, Oct 22, 2010 at 4:57 PM, Tortise <tortise at paradise.net.nz> wrote:
>>> If it also solved the standby power consumption issue I'd probably
>>> agree. I don't believe it does though?
>> Are you talking about "phantom" power draw, when you turn a device
>> off, but it is not really off?
I don't think you are talking phantom here. You are talking about
putting your PC in "suspend" mode. When a PC is off (ie. powered down)
the phantom load shouldn't be more than about 4W depending on the power
>> I thought short of actually unplugging a device it will always draw
>> some power
> True. That's what I am talking about, using a relay to effectively
> unplug them. I measured some of my FE PC's draw 25W in standby, when
> off. (Pentium 3000 class machines, later C2D machines typ pull less
> and the ions will likely pull less again, however it all adds up...)
> That is the PC only, before the TV (+17.5W) and sound system drains
> (+2.4W) are also added in is about 45W all the time. Gets worst when
> you clone and scale this setup around the house.
What I do is actually power down as opposed to suspend. Hibernation is
also an option but given my front end boots in about 40 seconds I really
don't find it worth the extra effort.
I'm surprised your TV has a phantom load of 17.5W. None of my TVs have
any measurable phantom load. Even my old Sony XBR that I bought in 1990
has a main relay that cuts the large PS out when the TV is off. The load
to drive the IR is not even measurable on a kill-a-watt meter. Same goes
for my audio receiver.
The only things that draws significant power are the Cisco/SA set top
boxes which draw a shocking 25W just for the basic set top box and 35W
for the PVR. Turning the power button off on those seems to be a placebo
as well as it doesn't change the power draw. They take about 5-10minutes
to boot and sync so you pretty much have to leave them on. I have 4 of
>> If not, the Harmony will shut off all my devices when I press power
>> (except my mythbox, which I leave on at all times, but you could
>> certainly have it shut that off as well).
> I believe it shuts down into suspend mode only, and often pulls more
> power than one realises, unless of course you regard the above power
> use as negligible? The setup I described would pull truly negligible
> power, a few milli amps at a few volts ~ 0.06W. Now that's what I
> call negligible.
The Harmony will do what you tell it to do. In my case I power down the
To turn it on I use a Veris IR receiver which will power on the system
with a specific IR code. It basically sits in line with the power button
lead to the motherboard. I've written a couple of how-to's for the set
up over at the knoppmyth/LinHES site.
I have 3 front ends built this way and each draws less than 2W when off.
My master backend sits virtualized on my main work horse server for
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