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Turn On - Leave On, Or Off And On ?

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Old 05-21-2013, 01:32 PM   #1
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Default Turn On - Leave On, Or Off And On ?

Which do you think is best for the new High Definition LCD TV's? Is it best to turn it on and leave it on for the course of the day and evening, or is it better to turn it off and on several times a day depending on your viewing needs?

I'm not interested in saving electricity, but more concerned which is best for the TV. We have Vizio monitors on our CNC machines at work, and they are left on 24/7. None have failed in the 3+ years we've had them. They are in a poor environment as well. Lots of dirt and vibration.

We, (just my wife and I), usually turn it on, (65" Vizio LCD), around 10:00 AM, and leave it on until we go to bed, which is usually around 9:00 PM. Several times a day it can run for an hour or more with neither of us viewing it. I've heard it's better to leave them on, rather than to be turning them on and off every few hours. What do you guys think?
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Old 05-21-2013, 03:29 PM   #2
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Personally, I've used a lot of electronic equipment and have never seen a failure induced by turning equipment on and off at reasonable intervals. Some electronic equipment is left on for reasons of calibration (some calibrations can be unreliable until the equipment has warmed up, particularly older analog equipment) but that doesn't really apply to HD televisions (unless you're specifically performing a calibration).

My own preference is to turn off unused electronic devices (i.e. TVs, amplifiers, disk players, etc.) since my feeling is that their ultimate life depends more on total hours of use (ON time) rather than infrequent on-off cycling. Consider the ubiquitous incandescent light bulb - more often than not they fail in the process of being turned on, but the cause of that failure is the total hours on the filament. Switching it on only completes the failure cycle in a weakened device.

However, you'll find both camps of thinking out there, so ultimately it will depend on your own choice, and possibly issues of convenience.

Last edited by RBTO; 05-21-2013 at 03:36 PM.
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Old 05-21-2013, 03:52 PM   #3
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I tend to agree. I had a neighbor who was an Electrical Engineer for Northrup. He assembled many of the "black boxes" that controlled many of the fly by wire features found in modern fighter aircraft. He told me after he finished assembling a new unit, they required a 40 hour "burn in" period on the bench before they were OK'ed for flight installation.

The theory was that most all electronic components that are faulty will fail in the first 40 hours of operation. After that they are good for their rated life expectancy. If he bought a new TV or other piece of electronic equipment, he would leave it on all day and night after he bought it. But he never mentioned turning things on and off would shorten their life.
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Old 05-22-2013, 10:57 AM   #4
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Modern TV's aren't completely turned off by the panel switch. The low voltage power circuits still remain energized, unless you pull the power plug. This dampens the initial damaging current surge experienced when turning on a "cold" TV. In addition to prolonging the TV's life, a pseudo"Instant On" is a subsidiary feature. Minimal benefits are gained by leaving a set on continuously, except a larger utility bill.

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Old 05-22-2013, 11:02 AM   #5
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Quote:
Originally Posted by geronimo View Post
Modern TV's aren't completely turned off by the panel switch. The low voltage power circuits still remain energized, unless you pull the power plug.
I noticed this on my set. The "VIZIO" label at the bottom of the set remains on, dimly lit all the time. Then when the set is switched on by the remote, it goes from dim to very bright.
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Old 05-22-2013, 11:16 AM   #6
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I noticed this on my set. The "VIZIO" label at the bottom of the set remains on, dimly lit all the time. Then when the set is switched on by the remote, it goes from dim to very bright.
That's an indicator lamp indicating panel is in standby mode if you completely turn it off it requires more startup time to reboot all of its content settings.
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Old 05-22-2013, 12:11 PM   #7
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I'm hooked up to Tivo. As it is now after I turn the set on it takes about a full minute before I get picture and sound. First the Vizio light goes bright. Next the large Vizio "V" comes on the screen. Then I get a "HDMI-1 1080-P" light in the upper right hand corner of the screen. Then finally the picture and sound come to life.
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Old 05-23-2013, 11:03 AM   #8
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Quote:
Originally Posted by billt460 View Post
I'm not interested in saving electricity...
I'm curious as to why not.
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Old 05-23-2013, 02:46 PM   #9
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I'm curious as to why not.
I think it's all a fallacy to sell you more stuff. I bought a "Energy Star" top rated Freezer / Fridge. Price $1,500.00. (After a $300.00 discount from the state). I bought a new top of the line "Energy Efficient" Central Air system. Price $7,400.00. I purchased "energy saving" CFL light bulbs for every socket in my house, outdoor, as well as indoor, 44 bulbs total. Price around $2.00 a bulb. I went on a "Off Peak" electric power usage plan from my electric company.

After all of that I don't see a dime in savings. Now, perhaps everyone else's bill went way up and mine didn't. But I think a lot of this is just BS to get people to go out and buy the latest goods, thinking they're going to save big bucks. In reality little to nothing changes.
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Old 05-24-2013, 09:58 AM   #10
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It's pretty easy to figure what you'd actually be saving. If you have an appliance that's on 24/7, multiply its wattage by 8.76 and then by your price per killowatt-hour to see what it costs you per year. If you leave your 200 watt television on 24/7 it would cost you an extra $175 per year if your killowatt-hour cost is $0.10.

You can scale that down if you only leave the TV on 12 hours per day, etc., etc., but it does add up. No gimmick here.

I think your decision to leave your set on all day might be justified by its slow warm-up time, but otherwise you'd be ahead (all considered) turning it off when not in use for a fair length of time. You won't see any gains in longevity by leaving it on and may actually have a loss in overall viewing lifespan (plus a little higher, though insignificantly higher???, power bill).

Last edited by RBTO; 05-24-2013 at 10:02 AM.
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