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Old 02-08-2008, 23:43
jackdaripper
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I am buying a 46w4000 but I have read a few things on here regards them not being sealed and problems with smoke and insects ect. the tv will be in the living room and we have solid fuel heating so there will be some smoke..its unavoidable. are LCDs really that bad I mean there must be lots of people who smoke and have LCDs and as for keeping insects out of the house in summer!

This is really putting me off now.
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Old 03-08-2008, 01:03
Jarrak
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I've had a LCD for 4 years, never yet had it occupied by an insect

Just consider the actual panel itself is a liquid crystal display, it will be sealed otherwise not much use and as for the rest of the chassis well like CRT's and Plasma plus rear pro there has to be ventilation.
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Old 03-08-2008, 02:03
jackdaripper
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[quote=Jarrak;26273789]I've had a LCD for 4 years, never yet had it occupied by an insect

....this is all new news to me but its what Ive picked up from this forum. thx for your reply Jarrak.
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Old 03-08-2008, 11:56
Nigel Goodwin
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I've had a LCD for 4 years, never yet had it occupied by an insect

Just consider the actual panel itself is a liquid crystal display, it will be sealed otherwise not much use and as for the rest of the chassis well like CRT's and Plasma plus rear pro there has to be ventilation.
Nice thought, but completely wrong!

LCD's aren't sealed, the actual liquid inside is obviously sealed in, but the display itself isn't - smoke (and insects) can get inside, where you can't clean them. I've never seen an insect inside one yet (but have heard of cases), but I've seen three LCD panels smoke damaged - two were under warranty and I replaced then without a second thought, the third was out of warranty and returned unrepaired.

If the OP is seriously worried about the possibility, I suggest he buys a plasma, where it is sealed, as it has to be due to the way they work.
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Old 03-08-2008, 12:22
Jarrak
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Nice thought, but completely wrong!



If the OP is seriously worried about the possibility, I suggest he buys a plasma, where it is sealed, as it has to be due to the way they work.



How?
The LCD panel (the actual screen itself) is sealed and the chassis/casing isn't, seems to me you are saying exactly the same thing.

As for a plasma well how is that different, the panel is sealed and the chassis/casing isn't to allow in some cases for active cooling not just passive.
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Old 03-08-2008, 12:29
vrooom
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I had a very small insect get inside my Samsung LCD PC monitor. I left it alone and thankfully, it left of his own accord - though it was disconcerting to see it marching across the Windows Desktop, almost as if it was part of the operating system!
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Old 03-08-2008, 12:39
Jarrak
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I had a very small insect get inside my Samsung LCD PC monitor. I left it alone and thankfully, it left of his own accord - though it was disconcerting to see it marching across the Windows Desktop, almost as if it was part of the operating system!




Cue humorous CS call about a bug in the computer
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Old 03-08-2008, 12:44
Nigel Goodwin
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How?
The LCD panel (the actual screen itself) is sealed and the chassis/casing isn't, seems to me you are saying exactly the same thing.
An LCD panel is a sandwich, backlights at the rear (not sealed), lCD in the middle (sealed - to keep the liquid in), protective layer at the front (not sealed). Contamination can enter either behind, or in front of, the LCD 'meat' part of the sandwich.

It was interesting to see one dismantled (broken apart - they aren't usually made for that) at York University Chemistry Open Day - it was actually a Philips/LG panel.


As for a plasma well how is that different, the panel is sealed and the chassis/casing isn't to allow in some cases for active cooling not just passive.
Plasma panels are sealed entirely, as they work on a reduced pressure - with the seal mostly maintained by the air pressure outside (which is why you shouldn't fly them in unpressurised aircraft). Some Plasma screens do have a thin glass or plastic cover on the outside, which is part of the cabinet assembly - which means you have to be EXTREMELY careful to prevent any dust getting in when you change the panel.
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Old 03-08-2008, 16:58
soulboy77
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I had a very small insect get inside my Samsung LCD PC monitor. I left it alone and thankfully, it left of his own accord - though it was disconcerting to see it marching across the Windows Desktop, almost as if it was part of the operating system!
Had two tiny thunderbugs (thrips) crawling around inside my PC LCD monitor last night and they have now joined the ranks of the other two dead ones on screen that have been there for over three years. Guess it's time to get the screw driver out.
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Old 03-08-2008, 21:02
Nigel Goodwin
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Had two tiny thunderbugs (thrips) crawling around inside my PC LCD monitor last night and they have now joined the ranks of the other two dead ones on screen that have been there for over three years. Guess it's time to get the screw driver out.
Can you get to them? - usually it's internal to the LCD panel, most can't be disassembled - Sharp ones generally can though, they even list separate parts for the LCD panel.
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Old 04-08-2008, 02:17
jackdaripper
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I would rather LCD than plasma tbh. wats you guys advise on putting one in the living room where there is a solid fuel heater. there is a small amount of smoke when we load it up but it doesnt fill the room. obvisously I dont want to pay top dollar for a nice set only to see it damaged in a few month by smoke and not fixable under warranty.
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Old 04-08-2008, 09:20
Nigel Goodwin
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I would rather LCD than plasma tbh. wats you guys advise on putting one in the living room where there is a solid fuel heater. there is a small amount of smoke when we load it up but it doesnt fill the room. obvisously I dont want to pay top dollar for a nice set only to see it damaged in a few month by smoke and not fixable under warranty.
You can only try, smoking yourself is likely to be a FAR greater problem. As a service engineer I have no problem replacing a screen under warranty for this, and have never had a claim refused either - and all panels have to go back for examination.
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Old 04-08-2008, 11:22
soulboy77
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Can you get to them? - usually it's internal to the LCD panel, most can't be disassembled - Sharp ones generally can though, they even list separate parts for the LCD panel.
I dismantled the monitor last night, very carefully. After removing the front bezel, the LCD panel assembly was screwed to the back panel mounted on four stalks. I removed the complete panel assembly, disconnecting the internal power and video signal cables. Then I removed the left & right outer frame and gently prised the inner frame apart around the LCD panel. This allowed me to hinge open the actual LCD panel from the backlight & video module?? (the electrical connections between were kept intact). I then blew out the offending dead bugs, cleaned and reassembled the unit in reverse order.

... And everthing still worked when connected back up!
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Old 04-08-2008, 11:25
Nigel Goodwin
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I dismantled the monitor last night, very carefully. After removing the front bezel, the LCD panel assembly was screwed to the back panel mounted on four stalks. I removed the complete panel assembly, disconnected the internal power and video signal cables. Then I removed the left & right outer frame and gently prised the inner frame apart. This allowed me to hinge open the actual LCD panel from the backlight & video module?? (the electrical connections between were kept intact). I then blew out the offending dead bugs, cleaned and reassembled the unit in reverse order.

... And everthing still worked when connected back up!
Very well done!
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Old 04-08-2008, 21:25
Orbitalzone
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I dismantled the monitor last night, very carefully. After removing the front bezel, the LCD panel assembly was screwed to the back panel mounted on four stalks. I removed the complete panel assembly, disconnecting the internal power and video signal cables. Then I removed the left & right outer frame and gently prised the inner frame apart around the LCD panel. This allowed me to hinge open the actual LCD panel from the backlight & video module?? (the electrical connections between were kept intact). I then blew out the offending dead bugs, cleaned and reassembled the unit in reverse order.

... And everthing still worked when connected back up!

blimey, well done!
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Old 05-08-2008, 12:11
soulboy77
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Originally Posted by Orbitalzone
blimey, well done!
Nothing ventured, nothing gained! I was going to treat myself to a new screen if I buggered the panel up.
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Old 10-08-2008, 12:55
jackdaripper
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Ok well put it this way if Im going to spend £1400 on a tv would I be better off buying a plasma as its sealed rather than the lcd...would there be must difference in pic quality..I have to say the pic on the sony w4000 was really impressive.
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Old 10-08-2008, 12:59
paulr2006
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Ok well put it this way if Im going to spend £1400 on a tv would I be better off buying a plasma as its sealed rather than the lcd...would there be must difference in pic quality..I have to say the pic on the sony w4000 was really impressive.
Don't let the fact that the Sony is not sealed put you off, it's a great set & lets face it if it was a real problem do you not think Sony would have sorted it
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Old 10-08-2008, 13:02
jackdaripper
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Thx Paul I guess your right maybe I could also get some kind of cover for it when not in use..Im sure they make that type of thing.
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Old 10-08-2008, 13:43
Nigel Goodwin
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Thx Paul I guess your right maybe I could also get some kind of cover for it when not in use..Im sure they make that type of thing.
Like I said above, I've only seen three examples of this problem - and we've sold thousands of Sony sets - it should come with a free 5 year warranty anyway, via D&G.
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