Blotchy LCD panel.
 

On 14/01/2011 23:54, Peter Duncanson wrote:
On Fri, 14 Jan 2011 23:06:52 +0000, Colin Stamp
wrote:

On 14/01/11 21:27, Peter Duncanson wrote:

I think we've discussed this before. I have a feeling that last time I
investigated this the simplest recommendation was to leave it switched
off for a few days.

That's assuming it *is* "image retention". The blotchiness doesn't look
like that to me. It doesn't bear any resemblance to anything the PC
normally ends up showing. If anything was getting burned in, I'd expect
it to look like a Club Penguin character.


A Google, or whatever, search for "LCD image retention" or "LCD image
persistence" will find lots of comments and articles on the subject.

But the accompanying pictures tend not to look like the damage on my
screen. They look like the images that burned them, not just vague smudges.

Yes.

I had a longer look at the picture you posted. It is difficult to
imagine what image could have caused that effect.

Having said that, The PC will have a screen-saver before the new telly
arrives...

Cheers,

Colin.



Has anything been pressing on the screen, eg over enthusiastic
dusting/wiping. I've seen something similar on laptops at work that
have been fitted with a privacy screen that put pressure on the LCD when
closed. This could be somewhat eased with gentle massage with a dry
cloth but not eradicated (but don't press too hard).

Does it change with gentle pressure?

Chris K

Blotchy LCD panel.
 

On 15/01/11 15:32, Chris K wrote:

Has anything been pressing on the screen, eg over enthusiastic
dusting/wiping. I've seen something similar on laptops at work that have
been fitted with a privacy screen that put pressure on the LCD when
closed. This could be somewhat eased with gentle massage with a dry
cloth but not eradicated (but don't press too hard).

We've been fairly careful with it, and no cleaning in this house could
never be described as over enthusiastic ;o). It does get the odd prod
from kids fingers though (in spite of severe beatings meted out to any
offenders) so it could be a possibility.


Does it change with gentle pressure?

I've just tried squishing it about a bit. It doesn't seem to make any
difference beyond the normal changes you get when the pressure is
actually on the panel.

Cheers,

Colin.

Blotchy LCD panel.
 

On 15/01/11 03:21, Brian Gregory [UK] wrote:

I don't know how the cold cathode fluorescent tube or tubes are typically
arraigned behind a LCD panel, but could it be that one, or part of one is
failing?

I'd wondered about a backlighting problem too, though I'd thought it
might be dust somehow getting in and settling between the backlight
panel and the LCD panel. I'd sort-of counted it out though, because the
blotches are only visible at certain brightness levels.

Cheers,

Colin.

Blotchy LCD panel.
 

On 15/01/11 07:47, Glenn Millar wrote:

Had a customer with a Samsung LCD TV with the same problem. After much
complaining Samsung, via the retailer replaced the TV.

Sounds interesting, though I've long since thrown out any paperwork that
came with the telly and I can't even remember the name of the web
retailer it came from.

I think I'll offer the telly to my dad, who's currently squinting at a
19" 4:3 set. The replacement is on order...

Cheers,

Colin.

Blotchy LCD panel.
 

On Sun, 16 Jan 2011 11:05:26 +0000, Colin Stamp
wrote:

Had a customer with a Samsung LCD TV with the same problem. After much
complaining Samsung, via the retailer replaced the TV.

Sounds interesting, though I've long since thrown out any paperwork that
came with the telly

I never understand why people do this. Why throw it away when you've still
got the item to which it refers? It's just a stupid thing to do, but then
most people seem to be stupid or pig-headed about such matters.

Blotchy LCD panel.
 

"Colin Stamp" wrote in message o.uk...
On 15/01/11 03:21, Brian Gregory [UK] wrote:

I don't know how the cold cathode fluorescent tube or tubes are typically
arraigned behind a LCD panel, but could it be that one, or part of one is
failing?

I'd wondered about a backlighting problem too, though I'd thought it might be dust somehow getting in and settling between the
backlight panel and the LCD panel. I'd sort-of counted it out though, because the blotches are only visible at certain brightness
levels.

Cheers,

Colin.

Here's mine
http://rabstaff.99k.org/lcd1.jpg

Same conditions except immediately prior to taking picture the set had been displaying a
4:3 pillar-box programme for half an hour.
http://rabstaff.99k.org/lcd2.jpg

--
Graham.

%Profound_observation%

Blotchy LCD panel.
 

On 16/01/2011 13:31, Paul Ratcliffe wrote:
On Sun, 16 Jan 2011 11:05:26 +0000, Colin
wrote:

Had a customer with a Samsung LCD TV with the same problem. After much
complaining Samsung, via the retailer replaced the TV.
Sounds interesting, though I've long since thrown out any paperwork that
came with the telly
I never understand why people do this. Why throw it away when you've still
got the item to which it refers? It's just a stupid thing to do, but then
most people seem to be stupid or pig-headed about such matters.
We have a Poloride TV in the works canteen and that is doing the same
type of blotching. Been in use for about 2 years.

Blotchy LCD panel.
 

On 16/01/11 14:08, Graham. wrote:

Here's mine
http://rabstaff.99k.org/lcd1.jpg

Ouch! That does look bad. It's interesting that it's showing the same
horizontal banding as mine. It suggests that my theory about sunlight
through the venetian blind is probably wrong.

Same conditions except immediately prior to taking picture the set had been displaying a
4:3 pillar-box programme for half an hour.
http://rabstaff.99k.org/lcd2.jpg

That looks much more like "classic" LCD image retention. I notice that
on mine too sometimes, but it always fades away over a few minutes.

Cheers,

Colin.

Blotchy LCD panel.
 

On 16/01/11 13:31, Paul Ratcliffe wrote:

I never understand why people do this.

I only have the content of your last post to go on, but you seem to be
the kind of person that will never understand very many things about
very many people. Have you considered giving up trying?

Why throw it away when you've still got the item to which it refers?

Oh my god! The paperwork retention police are coming to get me! How
could I have done something so stupid? I shall have to consider suicide.
It's the only way I can get myself out of this *terrible* mess I've got
myself into.

It's just a stupid thing to do, but then most people seem to be
stupid or pig-headed about such matters.

Your post was a *properly* stupid thing to do. The attitude and tone
make you come across as a complete bellend I'm afraid.

Cheers,

Colin.

Blotchy LCD panel.
 

Paul Ratcliffe wrote:
On Sun, 16 Jan 2011 11:05:26 +0000, Colin Stamp
wrote:

Had a customer with a Samsung LCD TV with the same problem. After much
complaining Samsung, via the retailer replaced the TV.
Sounds interesting, though I've long since thrown out any paperwork that
came with the telly

I never understand why people do this. Why throw it away when you've still
got the item to which it refers? It's just a stupid thing to do, but then
most people seem to be stupid or pig-headed about such matters.

I threw my marriage licence away but it didn't make any difference.

Bill