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General Hardware Discussion Hard drives, CD, DVD Monitors, All hardware questions not better served by our other Topics


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  #21 (permalink)  
Old 2nd August, 2012, 11:26 PM
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I wonder about the diff between LCD and LED flat screen monitors. LED tv's can get screen burn, while LCD's are immune. I'm guessing that LED's respond faster to changes in the picture than LCD's do. But I thought that burned screens were historic history. Boo, fail, ladies and gentlemen! Not thank you.
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  #22 (permalink)  
Old 3rd August, 2012, 12:16 AM
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Booman, from memory Dell use Sony, Viewsonic and Philips monitors as their OEM's. You may be able to find them cheaper directly.

Those as well as Asus I have seen in the workplace, often several (4+) years old.

One old monitor in use - a Viewsonic 11" LCD was ~10 years old - colour was a bit off as you would expect but it had many more hours on it than you would expect.
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  #23 (permalink)  
Old 3rd August, 2012, 12:24 AM
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I didn't realize Dell used those Manufacturers. I've use Viewsonic before. My first CRT was viewsonic, it lasted 8 years and was still working just fine.
I donated it.
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  #24 (permalink)  
Old 3rd August, 2012, 09:30 AM
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Quote:
Originally Posted by cloasters View Post
I wonder about the diff between LCD and LED flat screen monitors. LED tv's can get screen burn, while LCD's are immune.
LED TVs shouldn't get screen burn, as they're pretty much the same as an LCD TV. The only real difference between LCD and "LED" TVs is the backlight to generate the light for the screen. A traditional LCD screen uses cold cathode florescent tubes to generate the light. An "LED" TV uses a bunch of LEDS to generate the light. In both TVs the light then passes through an LCD which modulates the light level.

Plasma TVs were the ones that could get screen burn, and even that's far less of an issue in normal use now. OK, if you show a static image for a long period of time, then it will be an issue - but how often do you do that?! As as plasma owner myself, it's not an issue I've encountered, even with games consoles.
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Old 3rd August, 2012, 03:32 PM
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Thanks Aedan for clearing that up....
I just realized that you are totally right. All the same layers in LCD existing in LED. So the liquid crystals are still there, but are backlit more consistantly with LED's?
Question: are the LED's replaceable if one breaks?
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Old 3rd August, 2012, 03:50 PM
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From what I've seen, it's the control boards that go bad rather than the LEDs themselves, and that is normally a quick fix - DIY if you get the board. I've replaced quite a few and keep some spare control boards for my shops, where I always use cheap monitors. In fact, I've never seen anything BUT the board go bad on the machines in my shops.

At home where I actually buy good stuff, I am partial to the Samsungs like Gizmo. I have a couple of 23"s that are just beautiful both in style and display.
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  #27 (permalink)  
Old 3rd August, 2012, 03:53 PM
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really? thats awesome! I was worried about having to replace a tiny LED... I would never have the tools to do that.
I opened up a couple of LCD monitors to see if I could swap some parts, but even the same Dell model had different power supplies/boards in them.
lots of tiny wires/connectors just like a laptop
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Old 3rd August, 2012, 07:06 PM
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Aidan's right,
Although it is technically POSSIBLE to get an LED or LCD screen to suffer 'burn in', the fact is that it's very hard to do under practically any 'normal' usage scenarios. You'd have to display the same static image for days on end. The only time this is really an issue is e.g. airport flight time boards, stock market 'top ten' boards, and that sort of thing.
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  #29 (permalink)  
Old 4th August, 2012, 02:08 AM
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The way this is going the next monitor I buy I'll step into and walk/swim off into a
Tahitian Sunset...":O}
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