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Old 03-06-2008, 08:38 AM   #51
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itk, i'll ask the guys that repair monitors and tvs today. i doubt there's long term specs on large lcd or plasma tvs, but they'll have an idea what's good for the power supply and electronics.

thanks to andy, gb, and pacanis for the info. i'm gonna have to do a side by side like andy mentioned.
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Old 03-06-2008, 08:51 AM   #52
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Bucky, can you ask your guys something else too? This is something I heard a long time ago that made sense to me, but have never really researched it. I was told that it makes sense to leave electronic equipment on instead of turning it on and off because the constant heating and cooling makes the little wires and whatnot expand and contract which will weaken them over time. Keeping them on all the time will keep them expanded and will not weaken them as quickly. I am curious to know what the pros think.
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Old 03-06-2008, 09:57 AM   #53
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gb, this breaks down to 2 categories, first of all. there's consumer elecronics and then there's the pro stuff. consumer electronics in general is pretty much not intended to be left on all of the time. the pro stuff is built heavier, with more robust power supplies, heat sinks, and electronics.
we've had problems where a dept. tried to cheaply replace monitors and speakers and associated equipment with consumer stuff, and they burned out within a year because they were on 24/7. they're not built for that kind of use.
the only thing that i've found that prefers to be left running are hard drives. any type of hard drive, from ide to internal scsi to whole raid arrays. every time you power off and on a drive, you risk a crash. the older and more used the drive gets, the higher the risk.

as far as wires and connectors go: it's not so much the expanding and contracing of the wires or insulation, but oxidation that can build up on the connector surfaces. most home environments don't have extremes in temp and humidity, so it's usually not a problem. besides, as electronics get smaller, there's fewer and fewer wires and connectors to be affected that way. they're too bulky and heavy.

ok, gotta run. lol, i have to go change out a monitor. (no kidding!) bbl.
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Old 03-06-2008, 10:17 AM   #54
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one last quick thing, thinking about it: the characteristics or properties of silicon chips changes over time with usage (essentially the amount of time being heated), so it's better to leave things powered off when not in use.

i recently saw a show about keeping a "green" house by cutting power to all electronics in order to reduce the "vampire" power drain that many devices still draw, even when powered off. my first thoughts were hard drive failures, operating temp fluctuations causing chip failure, and systems that need to be re-initialized every time power is completely pulled.

ok, gotta run again, he heee.
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Old 03-06-2008, 10:46 AM   #55
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Thanks BT!
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Old 03-07-2008, 09:36 AM   #56
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andy, thanks for the link to avs forum. i'm more confused now than ever, about which hdtv to buy. the 40" sony xbr4, or the samsung 4071.

but at least i have a lot more info to agonize over.

itk, i asked the experts, and they said it depends on how often you turn it on and off. the biggest risks are to the power supply (easily replaced if needed), or the backlight (not easily replaced).
it's ok to turn it on for 5 or 10 minutes, so long as you're only doing that a few times a day. in fact, you're saving energy.
but if you're turning it on and off for 5 or 10 minutes a few times an hour, then you end up stressing the power supply trying to provide the high voltage for the backlight, which is usually a type of flourescent lamp. flourescents eventually burn out, so it would be better to leave it on.

somewhere on a curve, there's the difference between saving money on energy and having to spend it on repairs.

hope this helps.
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Old 03-07-2008, 09:40 AM   #57
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Bucky, when i was looking at TV's I found the Sony's were much better when it came to how black their blacks really were. Well "much better" might be a stretch. They were better. I also love what my TV looks like when it is off. It looks like a framed piece of art (honestly) with a floating glass frame. From people I know who have bought the Samsung HDTV's, they have all been extremely pleased. I honestly do not think you could go wrong with either of them.
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Old 03-07-2008, 10:08 AM   #58
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I was either going to get a Sony, Panasonic, Toshiba or a Magnavox, and I chose a Sony.

None of that no-name junk!!
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Old 03-07-2008, 10:25 AM   #59
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Good point, GB. I may have to reconsider. I can't tell you how many times one of us turns to the other and asks, "What did he say?".

I broke down and changed my order to add the DVR to the package. I decided it would be worth it for us.
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Old 03-07-2008, 10:26 AM   #60
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You are a smart man Charlie Brown.
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