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From: whit3rd on 2 Feb 2010 15:48
On Feb 2, 12:25 am, Jasen Betts <ja...(a)xnet.co.nz> wrote:
> On 2010-02-02, Affan <int...(a)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.
From: sparky on 2 Feb 2010 20:26
On Feb 2, 12:12 am, Affan <int...(a)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.
From: Jasen Betts on 3 Feb 2010 06:57
On 2010-02-02, whit3rd <whit3rd(a)gmail.com> wrote:
> On Feb 2, 12:25 am, Jasen Betts <ja...(a)xnet.co.nz> wrote:
>> On 2010-02-02, Affan <int...(a)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.



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From: DaveC on 4 Feb 2010 17:15
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>) and post links here?

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

Dave

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