Smart TV power usage

OK I will confuse this topic with facts. I hooked up my clamp to a Samsung 50" TV with a sound bar. The audio amp is disabled and it just feeds optical out to the bar that is separately powered. There is a USB connected 3.5" drive that powers up with the TV. With the TV off it is bouncing between 10ma and 20 ma which I assume is the CPU polling the network occasionally. Turned on, it really does not make a whole lot of difference whether you are watching antenna, local disk drive on the USB or streaming off the internet. it is mid 600s ma Off 10-20ma 12-24w On watching antenna or local drive 610-630ma 73-76w On watching a stream 650-670ma 78-80w It bounces around a bit both ways so I assume caching or buffering is the issue. All in all these things are pretty efficient. As a sanity check my 20" Sylvania CRT TV uses about the same with power off (standby) and 28 watts on for about 1/6th the picture area.

Reply to
gfretwell
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Make that 1.2-2.4w

Reply to
gfretwell

It is confusing. I have a smart Samsung TV but think when it is off, it is off but DTA cable box stays on. New Comcast X1 system on an old dumb Samsung TV where box also stays on takes no time at all to connect to the internet where the smart TV takes much longer when first turned on. At any rate, these vampire devices apparently take a few percent of all electrical usage.

Reply to
Frank

Your smart TV is still on but most of the functions are off. It pings the internet occasionally looking for updates, the timer is still running and it is monitoring the IR input, looking for a remote control power on. It still manages to do this at about the same power consumption to an old "dumb" TV. I would need to use my other clamp to see how much it really is because the one I used is +/- 10ma and both go between .01 and .02 I have a probe that is +/- .001ma running off a 4 1/2 digit Fluke.

Reply to
gfretwell

I based my comments on how much longer it takes to access Netflix on the smart TV versus Netflix on the new X1 box. It's like the X1 unit contains a Roku type device to contact the internet and since it is always on I can even start the X1 TV by voice command even before turning on the TV. I can't do this with the smart TV on the old DTA box which is always on.

Don't like all this vampire stuff but some devices can take a long time to reboot.

Reply to
Frank

So, I think you're saying that I was right? That a smart TV uses about the same power as a dumb, similar TV?

Reply to
trader_4

I compared it to a 20" CRT I just compared it to a dumb LED TV. The one I have is bigger than the 50 and a different brand so it might not be a fair comparison. A Seiki 55" dumb LED draws 0-10 ma in standby (about half of the CRT and the Smart TV) and 1.05a on. Standby is less, on is quite a bit more. I am also surprised at how much more it draws on for such a little increase in size. I guess Samsung knows more about efficiency or maybe the brightness is just set higher in the 55. I am running the audio amp on that one and that could be some of the difference too. It is clear that if we really want better numbers on the low end I need to use a better clamp. but this is an idea of what we are talking about.

Reply to
gfretwell

Changing the picture mode from factory (Dynamic or Vivid) to Cinema or Movie will drop your flat's energy consumption even more, and give you more accurate picture and last longer.

Reply to
thekmanrocks

That may be why the bedroom (smart) TV uses less current. It is set to movie or something (the lower intensity setting) The big one in the kids room is still at factory default I suppose.

Reply to
gfretwell

If that's what you were writing, then I agree with you. I wasn't disputing that. I thought you were comparing a smart tv with that of an actual desktop computer in terms of power consumption.

Reply to
Diesel

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