Magnet Damage to LCD

[Affan]

So, I know that speaker and light magnets donot damage LCD like they
used to dmage CRT's. However, my daughter a mere 2.5yrs old, took a
magnet and was able to make entire area on the screen go completely
black. First question... anyway to repair it? second, how could this
happen?

 

[Jasen Betts]

On 2010-02-02, Affan <intiha@gmail.com> wrote:

So, I know that speaker and light magnets donot damage LCD like they
used to dmage CRT's. However, my daughter a mere 2.5yrs old, took a
magnet and was able to make entire area on the screen go completely
black. First question... anyway to repair it?

you need to find and replace the failed part.

second, how could this happen?

maybe saturatiing an inductor in the poswersupply causing some part to fail.




--- news://freenews.netfront.net/ - complaints: news@netfront.net ---

 

[Beryl]

Affan wrote:

So, I know that speaker and light magnets donot damage LCD like they
used to dmage CRT's. However, my daughter a mere 2.5yrs old, took a
magnet and was able to make entire area on the screen go completely
black. First question... anyway to repair it? second, how could this
happen?

Is "entire area" the entire screen?

If it's just a portion of the screen, you can try this site.
http://www.jscreenfix.com/basic.php
Stuck pixels can sometimes be unstuck. But DEAD pixels are black, and
they aren't coming back.

 

[Affan]

On Feb 2, 12:31 am, Beryl <fo...@road.net> wrote:

Affan wrote:
So, I know that speaker and light magnets donot damage LCD like they
used to dmage CRT's. However, my daughter a mere 2.5yrs old, took a
magnet and was able to make entire area on the screen go completely
black. First question... anyway to repair it? second, how could this
happen?

Is "entire area" the entire screen?

No, just a portion at the bottom of the screen...

If it's just a portion of the screen, you can try this site.http://www.jscreenfix.com/basic.php
Stuck pixels can sometimes be unstuck. But DEAD pixels are black, and
they aren't coming back.
This is a LCD TV not a computer monitor. Anyway, if black is dead,

then they are certainly dead. Just lost like $400 worth of TV

Any idea why this would happen?

 

[Beryl]

Affan wrote:

On Feb 2, 12:31 am, Beryl <fo...@road.net> wrote:
Affan wrote:
So, I know that speaker and light magnets donot damage LCD like they
used to dmage CRT's. However, my daughter a mere 2.5yrs old, took a
magnet and was able to make entire area on the screen go completely
black. First question... anyway to repair it? second, how could this
happen?
Is "entire area" the entire screen?

No, just a portion at the bottom of the screen...

If it's just a portion of the screen, you can try this site.http://www.jscreenfix.com/basic.php
Stuck pixels can sometimes be unstuck. But DEAD pixels are black, and
they aren't coming back.
This is a LCD TV not a computer monitor. Anyway, if black is dead,
then they are certainly dead. Just lost like $400 worth of TV

Any idea why this would happen?

Maybe heavy pressure bruised the screen. You may as well try gently
massaging the damaged area. I have a few dead black pixels scattered
around my LCD monitor, and neither the rapid color switching exercise
nor massaging has fixed them.

 

[whit3rd]

On Feb 2, 12:25 am, Jasen Betts <ja...@xnet.co.nz> wrote:

On 2010-02-02, Affan <int...@gmail.com> wrote:

So, I know that speaker and light magnets donot damage LCD like they
used to dmage CRT's. However, my daughter a mere 2.5yrs old, took a
magnet and was able to make entire area on the screen go completely
black. First question... anyway to repair it?

you need to find and replace the failed part.

second, how could this happen?

maybe saturatiing an inductor in the powersupply causing some part to fail.

It'd take a strong magnet, but that's at least a possibillty.

The power to the backlights on your display comes from a small
inverter module,
which is probably fuse-protected. At worst, it'll be a replacement
inverter (these
are relatively inexpensive). That would make the screen brightness
nonuniform,
wouldn't exactly get 'black' anywhere. It's probably unrelated to
the magnet
if the black area has any other cause.

 

[sparky]

On Feb 2, 12:12 am, Affan <int...@gmail.com> wrote:

So, I know that speaker and light magnets donot damage LCD like they
used to dmage CRT's. However, my daughter a mere 2.5yrs old, took a
magnet and was able to make entire area on the screen go completely
black. First question... anyway to repair it? second, how could this
happen?

A magnet of any kind will not damage the screen by magnetism. Perhaps
it is physical damage to the screen.

 

[Jasen Betts]

On 2010-02-02, whit3rd <whit3rd@gmail.com> wrote:

On Feb 2, 12:25 am, Jasen Betts <ja...@xnet.co.nz> wrote:
On 2010-02-02, Affan <int...@gmail.com> wrote:

So, I know that speaker and light magnets donot damage LCD like they
used to dmage CRT's. However, my daughter a mere 2.5yrs old, took a
magnet and was able to make entire area on the screen go completely
black. First question... anyway to repair it?

you need to find and replace the failed part.

second, how could this happen?

maybe saturatiing an inductor in the powersupply causing some part to fail.

It'd take a strong magnet, but that's at least a possibillty.

I saw one inverter circuit that used an inductor with a magnet glued
to it, bringing a strong magnet near it could throw the system out of
whack. anyway it seems now just a failure of a rectangular area.
I couldn't parse the original post as anything other than a complete
blackout.



--- news://freenews.netfront.net/ - complaints: news@netfront.net ---

 

[DaveC]

Sounds very odd.

No, just a portion at the bottom of the screen...

Can you take a few digi photos and upload them to a photo share web site (I
like <http://www.tinypic.com&gt and post links here?

I'm curious to see it. Maybe once we see a few pictures someone will have an
idea.

Dave